Re: [R] Need help plotting
Hi David,
No, read.table converts a text representation of data into a data frame object.
Jim
On Sat, Sep 24, 2022 at 2:29 AM DFP wrote:
>
> Do I need that read.table if the tst dataframe already exists in my
> system? If so, why?
>
> --
>
> Hello,
>
> You have to load the packages involved:
>
>
> library(dplyr)
> library(tidyr)
> library(ggplot2)
>
>
> then run the full sequence. Though this is not important, if you are
> pivotting columnns named y1 and y2, why not name the result just y?
>
>
> pivot_longer(-time, names_to = "y")
>
>
> And here is complete code, runs in a fresh R session.
>
>
> tst <- read.table(text = "
> time y1 y2
> 1 18:55 30 19
> 2 18:56 30 19
> 3 18:57 29 19
> 4 18:58 31 19
> 5 18:59 28 19
> 6 19:00 28 19
> 7 19:01 28 19
> 8 19:02 28 19
> 9 19:03 28 19
> 10 19:04 28 19
> 11 19:05 29 19
> ", header = TRUE)
>
> library(dplyr)
> library(tidyr)
> library(ggplot2)
>
> tst %>%
> mutate(time = paste(Sys.Date(), time),
>time = as.POSIXct(time)) %>%
> select(time, y1, y2) %>%
> # reshape to long format
> pivot_longer(-time, names_to = "y") %>%
> # now plot
> ggplot(aes(time, value, color = y)) +
> geom_line() +
> geom_point() +
> scale_color_manual(values = c("orange", "skyblue")) +
> # make datetime labels
> scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
> theme_bw()
>
>
> Hope this helps,
>
> Rui Barradas
>
> [[alternative HTML version deleted]]
>
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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Re: [R] Need help plotting
Do I need that read.table if the tst dataframe already exists in my
system? If so, why?
--
Hello,
You have to load the packages involved:
library(dplyr)
library(tidyr)
library(ggplot2)
then run the full sequence. Though this is not important, if you are
pivotting columnns named y1 and y2, why not name the result just y?
pivot_longer(-time, names_to = "y")
And here is complete code, runs in a fresh R session.
tst <- read.table(text = "
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
", header = TRUE)
library(dplyr)
library(tidyr)
library(ggplot2)
tst %>%
mutate(time = paste(Sys.Date(), time),
time = as.POSIXct(time)) %>%
select(time, y1, y2) %>%
# reshape to long format
pivot_longer(-time, names_to = "y") %>%
# now plot
ggplot(aes(time, value, color = y)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
Hope this helps,
Rui Barradas
[[alternative HTML version deleted]]
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Re: [R] Need help plotting
That worked, and helped my understanding. Thank you.
Hello,
You have to load the packages involved:
library(dplyr)
library(tidyr)
library(ggplot2)
then run the full sequence. Though this is not important, if you are
pivotting columnns named y1 and y2, why not name the result just y?
pivot_longer(-time, names_to = "y")
And here is complete code, runs in a fresh R session.
tst <- read.table(text = "
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
", header = TRUE)
library(dplyr)
library(tidyr)
library(ggplot2)
tst %>%
mutate(time = paste(Sys.Date(), time),
time = as.POSIXct(time)) %>%
select(time, y1, y2) %>%
# reshape to long format
pivot_longer(-time, names_to = "y") %>%
# now plot
ggplot(aes(time, value, color = y)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
Hope this helps,
Rui Barradas
[[alternative HTML version deleted]]
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Re: [R] Need help plotting
No you don't! I do!
I don't have tst on my system.
Rui Barradas
Às 22:11 de 22/09/2022, DFP escreveu:
Do I need that read.table if the tst dataframe already exists in my
system? If so, why?
--
Hello,
You have to load the packages involved:
library(dplyr)
library(tidyr)
library(ggplot2)
then run the full sequence. Though this is not important, if you are
pivotting columnns named y1 and y2, why not name the result just y?
pivot_longer(-time, names_to = "y")
And here is complete code, runs in a fresh R session.
tst <- read.table(text = "
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
", header = TRUE)
library(dplyr)
library(tidyr)
library(ggplot2)
tst %>%
mutate(time = paste(Sys.Date(), time),
time = as.POSIXct(time)) %>%
select(time, y1, y2) %>%
# reshape to long format
pivot_longer(-time, names_to = "y") %>%
# now plot
ggplot(aes(time, value, color = y)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
Hope this helps,
Rui Barradas
__
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and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Hello,
You have to load the packages involved:
library(dplyr)
library(tidyr)
library(ggplot2)
then run the full sequence. Though this is not important, if you are
pivotting columnns named y1 and y2, why not name the result just y?
pivot_longer(-time, names_to = "y")
And here is complete code, runs in a fresh R session.
tst <- read.table(text = "
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
", header = TRUE)
library(dplyr)
library(tidyr)
library(ggplot2)
tst %>%
mutate(time = paste(Sys.Date(), time),
time = as.POSIXct(time)) %>%
select(time, y1, y2) %>%
# reshape to long format
pivot_longer(-time, names_to = "y") %>%
# now plot
ggplot(aes(time, value, color = y)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
Hope this helps,
Rui Barradas
Às 20:40 de 22/09/2022, DFP escreveu:
I'm trying to do as you suggest, but I'm not understanding what I need
to do. I asked what the line pivot_longer(-time, names_to = "y1") would
do if applied to this df:
> tst
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
I tried to run these lines and then look at tst, but this is what I get:
> tst %>%
+ mutate(time = paste(Sys.Date(), time),
+ time = as.POSIXct(time)) %>%
+ select(time, y1,y2) %>%
+ # reshape to long format
+ pivot_longer(-time, names_to = "y1")
Error in tst %>% mutate(time = paste(Sys.Date(), time), time =
as.POSIXct(time)) %>% :
could not find function "%>%"
How can I learn what the pivot_longer has done to tst?
Darn it--Now I try to run the whole sequence that Rui suggested--it
worked before--and now I get this:
> tst %>%
+ mutate(time = paste(Sys.Date(), time),
+ time = as.POSIXct(time)) %>%
+ select(time, y1,y2) %>%
+ # reshape to long format
+ pivot_longer(-time, names_to = "y1") %>%
+ # now plot
+ ggplot(aes(time, value, color = y1)) +
+ geom_line() +
+ geom_point() +
+ scale_color_manual(values = c("orange", "skyblue")) +
+ # make datetime labels
+ scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
+ theme_bw()
Error in tst %>% mutate(time = paste(Sys.Date(), time), time =
as.POSIXct(time)) %>% :
could not find function "%>%"
>
What should I try next?
__
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Re: [R] Need help plotting
I'm trying to do as you suggest, but I'm not understanding what I need
to do. I asked what the line pivot_longer(-time, names_to = "y1") would
do if applied to this df:
> tst
time y1 y2
1 18:55 30 19
2 18:56 30 19
3 18:57 29 19
4 18:58 31 19
5 18:59 28 19
6 19:00 28 19
7 19:01 28 19
8 19:02 28 19
9 19:03 28 19
10 19:04 28 19
11 19:05 29 19
I tried to run these lines and then look at tst, but this is what I get:
> tst %>%
+ mutate(time = paste(Sys.Date(), time),
+ time = as.POSIXct(time)) %>%
+ select(time, y1,y2) %>%
+ # reshape to long format
+ pivot_longer(-time, names_to = "y1")
Error in tst %>% mutate(time = paste(Sys.Date(), time), time =
as.POSIXct(time)) %>% :
could not find function "%>%"
How can I learn what the pivot_longer has done to tst?
Darn it--Now I try to run the whole sequence that Rui suggested--it
worked before--and now I get this:
> tst %>%
+ mutate(time = paste(Sys.Date(), time),
+ time = as.POSIXct(time)) %>%
+ select(time, y1,y2) %>%
+ # reshape to long format
+ pivot_longer(-time, names_to = "y1") %>%
+ # now plot
+ ggplot(aes(time, value, color = y1)) +
+ geom_line() +
+ geom_point() +
+ scale_color_manual(values = c("orange", "skyblue")) +
+ # make datetime labels
+ scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
+ theme_bw()
Error in tst %>% mutate(time = paste(Sys.Date(), time), time =
as.POSIXct(time)) %>% :
could not find function "%>%"
>
What should I try next?
__
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Re: [R] Need help plotting
Hello,
This type of problems generally has to do with reshaping the data. The
format should be the long format and the data is in wide format.
Inline.
Às 23:35 de 21/09/2022, DFP escreveu:
As I said, the lines below that you provided worked well for me. Can you
explain what this line does?:
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
-
library(ggplot2)
library(dplyr)
library(tidyr)
b %>%
mutate(Dtime = paste(Sys.Date(), Dtime),
Dtime = as.POSIXct(Dtime)) %>%
select(Dtime, DNO2, MNO2) %>%
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
After selecting only the columns Dtime and *NO2 you need to reshape the
data to long format. Some ways of telling pivot_longer what are the
columns to become one are
- explicitly writing all columns to be pivotted;
- with negative indexing, all others will be put under the new name "NO2";
- with a selection function such as ends_with("NO2"). This is probably
more readable code if you return to it some time from now.
pivot_longer(ends_with("NO2"), names_to = "NO2") %>%
With data in the long format map column NO2 to the color aesthetic and
ggplot will automatically understand that you have 2 groups, DNO2 and
MNO2, and plot 2 lines and 2 groups of points (one for each color) .
Hope this helps,
Rui Barradas
# now plot
ggplot(aes(Dtime, value, color = NO2)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
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Re: [R] Need help plotting
Yes, but if you want to learn R (or relearn R) it would be better for you to
decompress the code.
You know what b looks like so add the next step. If you want to be able to see
the original then save the output to another data frame.
New_df <- b %>%
mutate(Dtime = paste(Sys.Date(), Dtime),
Dtime = as.POSIXct(Dtime))
What do you have now?
Then add the next pipe %>% and code until the next %>%.
When you look at the dataframe after reshape() it will be very obvious, though
if you still have questions please ask.
Tim
-Original Message-
From: R-help On Behalf Of DFP
Sent: Wednesday, September 21, 2022 6:35 PM
To: Rui Barradas ; r-help@r-project.org
Subject: Re: [R] Need help plotting
[External Email]
As I said, the lines below that you provided worked well for me. Can you
explain what this line does?:
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
-
library(ggplot2)
library(dplyr)
library(tidyr)
b %>%
mutate(Dtime = paste(Sys.Date(), Dtime),
Dtime = as.POSIXct(Dtime)) %>%
select(Dtime, DNO2, MNO2) %>%
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
# now plot
ggplot(aes(Dtime, value, color = NO2)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
[[alternative HTML version deleted]]
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and provide commented, minimal, self-contained, reproducible code.
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and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
As I said, the lines below that you provided worked well for me. Can you
explain what this line does?:
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
-
library(ggplot2)
library(dplyr)
library(tidyr)
b %>%
mutate(Dtime = paste(Sys.Date(), Dtime),
Dtime = as.POSIXct(Dtime)) %>%
select(Dtime, DNO2, MNO2) %>%
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
# now plot
ggplot(aes(Dtime, value, color = NO2)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
[[alternative HTML version deleted]]
__
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[R] Need help plotting
Thank you for the ideas below. That did work. I thought I had tried "10 mins" before, but maybe I used just 10 min. === Yes, you can have date_breaks = "n mins" where n is any integer. date_breaks = "15 mins" date_breaks = "30 mins" date_breaks = "1 hour" # or "1 hours", plural The only way I know is to try different values until you find one suitable. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Have you done something like this first?
install.packages("chron")
After that comes
library(chron)
and the rest of your code.
Tim
-Original Message-
From: R-help On Behalf Of Bert Gunter
Sent: Tuesday, September 20, 2022 11:57 AM
To: Parkhurst, David
Cc: r-help@r-project.org
Subject: Re: [R] Need help plotting
[External Email]
"Also, IU's tech support told me yesterday that if I responded to a message
that came as plain text, my response would go out as plain text. Is that true
for this response, or is it in HTML?"
Nope, HTML. You need to set your email client to send in plain text. Do an
internet search on how to do this, e.g. with "How to send plain text email for
<>".
Also see "?download.packages" for how to get packages from an R package
repository (though RStudio and no doubt other IDE's have an interface through
which to do this).
Cheers,
Bert
On Tue, Sep 20, 2022 at 8:49 AM Parkhurst, David
wrote:
> I like the looks of what you are doing here.
>
> However, this from my system:
> > library(chron)
> Error in library(chron) : there is no package called 'chron'
>
> How can I get chron?
>
> Also, IU's tech support told me yesterday that if I responded to a
> message that came as plain text, my response would go out as plain
> text. Is that true for this response, or is it in HTML?
>
> From: Rui Barradas
> Date: Tuesday, September 20, 2022 at 4:52 AM
> To: Jim Lemon , Parkhurst, David <
> parkh...@indiana.edu>, r-help mailing list
> Subject: Re: [R] Need help plotting
> Hello,
>
> Now with data, here are base R and ggplot2 plots.
>
>
> b <- read.table(text=
> "Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2
> MVOCMpm10 Mpm2.5 Mpm1
> 18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00
> 21
> 18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00
> 21
> 18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00
> 21",
>header=TRUE,stringsAsFactors=FALSE)
>
>
> # This base R plot needs package chron
> library(chron)
>
>
> [[alternative HTML version deleted]]
>
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> =0
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>
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Re: [R] Need help plotting
"Also, IU’s tech support told me yesterday that if I responded to a message that came as plain text, my response would go out as plain text. Is that true for this response, or is it in HTML?" Nope, HTML. You need to set your email client to send in plain text. Do an internet search on how to do this, e.g. with "How to send plain text email for <>". Also see "?download.packages" for how to get packages from an R package repository (though RStudio and no doubt other IDE's have an interface through which to do this). Cheers, Bert On Tue, Sep 20, 2022 at 8:49 AM Parkhurst, David wrote: > I like the looks of what you are doing here. > > However, this from my system: > > library(chron) > Error in library(chron) : there is no package called ‘chron’ > > How can I get chron? > > Also, IU’s tech support told me yesterday that if I responded to a message > that came as plain text, my response would go out as plain text. Is that > true for this response, or is it in HTML? > > From: Rui Barradas > Date: Tuesday, September 20, 2022 at 4:52 AM > To: Jim Lemon , Parkhurst, David < > parkh...@indiana.edu>, r-help mailing list > Subject: Re: [R] Need help plotting > Hello, > > Now with data, here are base R and ggplot2 plots. > > > b <- read.table(text= > "Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2 > MVOCMpm10 Mpm2.5 Mpm1 > 18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00 > 21 > 18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00 > 21 > 18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00 > 21", >header=TRUE,stringsAsFactors=FALSE) > > > # This base R plot needs package chron > library(chron) > > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
I like the looks of what you are doing here. However, this from my system: > library(chron) Error in library(chron) : there is no package called �chron� How can I get chron? Also, IU�s tech support told me yesterday that if I responded to a message that came as plain text, my response would go out as plain text. Is that true for this response, or is it in HTML? From: Rui Barradas Date: Tuesday, September 20, 2022 at 4:52 AM To: Jim Lemon , Parkhurst, David , r-help mailing list Subject: Re: [R] Need help plotting Hello, Now with data, here are base R and ggplot2 plots. b <- read.table(text= "Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2 MVOCMpm10 Mpm2.5 Mpm1 18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00 21 18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00 21 18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00 21", header=TRUE,stringsAsFactors=FALSE) # This base R plot needs package chron library(chron) [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Hello,
Now with data, here are base R and ggplot2 plots.
b <- read.table(text=
"Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2
MVOCMpm10 Mpm2.5 Mpm1
18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00
21
18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00
21
18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00
21",
header=TRUE,stringsAsFactors=FALSE)
# This base R plot needs package chron
library(chron)
# first make a real time class column
b$Dtime2 <- paste(b$Dtime, "00", sep = ":")
b$Dtime2 <- as.times(b$Dtime2)
# get the plot height and make room for
# the legend by adding 2 to y max
ylim <- range(unlist(b[c("DNO2", "MNO2")])) + c(0, 2)
# now plot one line
plot(DNO2 ~ Dtime2, b, type = "b", col = "orange", ylim = ylim)
# add the second line
points(MNO2 ~ Dtime2, b, type = "b", col = "skyblue")
# and the horizontal legend at the top center
legend("top", legend = c("DNO2", "MNO2"), horiz = TRUE,
lty = "solid", col = c("orange", "skyblue"))
#---
library(ggplot2)
library(dplyr)
library(tidyr)
b %>%
mutate(Dtime = paste(Sys.Date(), Dtime),
Dtime = as.POSIXct(Dtime)) %>%
select(Dtime, DNO2, MNO2) %>%
# reshape to long format
pivot_longer(-Dtime, names_to = "NO2") %>%
# now plot
ggplot(aes(Dtime, value, color = NO2)) +
geom_line() +
geom_point() +
scale_color_manual(values = c("orange", "skyblue")) +
# make datetime labels
scale_x_datetime(date_breaks = "1 mins", date_labels = "%H:%M") +
theme_bw()
Hope this helps,
Rui Barradas
Às 08:37 de 20/09/2022, Jim Lemon escreveu:
Hi David,
I'm back home again. Try this:
b<-read.table(text=
"Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2 MVOCMpm10 Mpm2.5 Mpm1
18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00 21
18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00 21
18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00 2
1",
header=TRUE,stringsAsFactors=FALSE)
b$POSIXtime<-strptime(paste("2022-09-20",b$Dtime),"%Y-%m-%d %H:%M")
png("DFPNO2.png")
plot(b$POSIXtime,b$DNO2,type="b",main="NO2 readings (2022-09-20)",
xlab="Date/time",ylab="NO2",ylim=range(c(b$DNO2,b$MNO2)),
pch=19,col="red")
points(b$POSIXtime,b$MNO2,type="b",pch=19,col="blue")
legend("center",legend=c("DNO2","MNO2"),pch=19,col=c("red","blue"))
dev.off()
If you have more than one day, it will show up on the x axis. You can
also format the tick labels if you want the full dates for only one
day.
Jim
PS thanks Avi
On Tue, Sep 20, 2022 at 4:49 PM Parkhurst, David wrote:
Thank you.
DFP (iPad)
On Sep 19, 2022, at 8:15 AM, Ebert,Timothy Aaron wrote:
My version of this email has a bunch of ? that I do not know how to interpret.
Emails to this group need to be in plain text. HTML content is deleted or
converted and impossible or at least difficult to interpret.
Do not share confidential data. Please change some numbers or variable names
and share that.
If this helps:
1) Make sure your time variable is a datetime object.
2) At least in ggplot it should now behave as expected.
ggplot(df, aes(y=NO2, x=datetime)) + geom_point()
That will be a start as a scatterplot, but the graph can be customized or
changed if scatterplot was not desired.
Tim
-Original Message-
From: R-help On Behalf Of Parkhurst, David
Sent: Sunday, September 18, 2022 4:27 PM
To: r-help@r-project.org
Subject: [R] Need help plotting
[External Email]
I�ve been retired since �06 and have forgotten most of R. Now I have a use for
it, with some data from Bloomington�s Environmental Commission.
I have a dataframe (obtained from read.csv) that contains numerous columns,
including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air
quality instruments.
I�d like a plot of both the NO2 measurements against time. I be happy to use
either ordinary R plots or ggplot2 ones, if that would be a better way. I�d
much appreciate help.
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
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Re: [R] Need help plotting
Hi David,
I'm back home again. Try this:
b<-read.table(text=
"Dtime DNO2 DVOC Dpm10Dpm2.5 Dpm1 Mtime MNO2 MVOCMpm10 Mpm2.5 Mpm1
18:00 28 164 81.34773 24.695435 14 18:00 19 151 3.00 21
18:01 27 163 74.44034 23.751198 14 18:01 20 148 3.00 21
18:02 30 160 72.21975 22.463129 13 18:02 19 150 3.00 21",
header=TRUE,stringsAsFactors=FALSE)
b$POSIXtime<-strptime(paste("2022-09-20",b$Dtime),"%Y-%m-%d %H:%M")
png("DFPNO2.png")
plot(b$POSIXtime,b$DNO2,type="b",main="NO2 readings (2022-09-20)",
xlab="Date/time",ylab="NO2",ylim=range(c(b$DNO2,b$MNO2)),
pch=19,col="red")
points(b$POSIXtime,b$MNO2,type="b",pch=19,col="blue")
legend("center",legend=c("DNO2","MNO2"),pch=19,col=c("red","blue"))
dev.off()
If you have more than one day, it will show up on the x axis. You can
also format the tick labels if you want the full dates for only one
day.
Jim
PS thanks Avi
On Tue, Sep 20, 2022 at 4:49 PM Parkhurst, David wrote:
>
> Thank you.
>
> DFP (iPad)
>
> > On Sep 19, 2022, at 8:15 AM, Ebert,Timothy Aaron wrote:
> >
> > My version of this email has a bunch of ? that I do not know how to
> > interpret. Emails to this group need to be in plain text. HTML content is
> > deleted or converted and impossible or at least difficult to interpret.
> >
> > Do not share confidential data. Please change some numbers or variable
> > names and share that.
> > If this helps:
> > 1) Make sure your time variable is a datetime object.
> > 2) At least in ggplot it should now behave as expected.
> > ggplot(df, aes(y=NO2, x=datetime)) + geom_point()
> >
> > That will be a start as a scatterplot, but the graph can be customized or
> > changed if scatterplot was not desired.
> >
> > Tim
> >
> > -Original Message-
> > From: R-help On Behalf Of Parkhurst, David
> > Sent: Sunday, September 18, 2022 4:27 PM
> > To: r-help@r-project.org
> > Subject: [R] Need help plotting
> >
> > [External Email]
> >
> > I�ve been retired since �06 and have forgotten most of R. Now I have a use
> > for it, with some data from Bloomington�s Environmental Commission.
> >
> > I have a dataframe (obtained from read.csv) that contains numerous columns,
> > including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air
> > quality instruments.
> >
> > I�d like a plot of both the NO2 measurements against time. I be happy to
> > use either ordinary R plots or ggplot2 ones, if that would be a better way.
> > I�d much appreciate help.
> >
> >[[alternative HTML version deleted]]
> >
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Thank you. DFP (iPad) > On Sep 19, 2022, at 8:15 AM, Ebert,Timothy Aaron wrote: > > My version of this email has a bunch of ? that I do not know how to > interpret. Emails to this group need to be in plain text. HTML content is > deleted or converted and impossible or at least difficult to interpret. > > Do not share confidential data. Please change some numbers or variable names > and share that. > If this helps: > 1) Make sure your time variable is a datetime object. > 2) At least in ggplot it should now behave as expected. > ggplot(df, aes(y=NO2, x=datetime)) + geom_point() > > That will be a start as a scatterplot, but the graph can be customized or > changed if scatterplot was not desired. > > Tim > > -Original Message- > From: R-help On Behalf Of Parkhurst, David > Sent: Sunday, September 18, 2022 4:27 PM > To: r-help@r-project.org > Subject: [R] Need help plotting > > [External Email] > > I�ve been retired since �06 and have forgotten most of R. Now I have a use > for it, with some data from Bloomington�s Environmental Commission. > > I have a dataframe (obtained from read.csv) that contains numerous columns, > including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air > quality instruments. > > I�d like a plot of both the NO2 measurements against time. I be happy to use > either ordinary R plots or ggplot2 ones, if that would be a better way. I�d > much appreciate help. > >[[alternative HTML version deleted]] > __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Hi David, All I got was the rather cryptic "DFP (iPad)" below your message. Whatever format you used for the data was blocked by the R-help mail server. Try this command in your R session: dput(test) and cut and paste the output into your email. That should do it. Jim On Tue, Sep 20, 2022 at 7:41 AM Parkhurst, David wrote: > > I just sent a subset of the data, with a dataframe called test. Can you see > that? It may not have been approved by the moderator yet. > > DFP (iPad) > > > On Sep 19, 2022, at 5:29 PM, Jim Lemon wrote: > > > > Hi David, > > Since you used read.csv to get the data frame, the file must be i text > > format. If you can include a few lines of the input (with made up NO2 > > values if necessary), it would be easy to respond with the required > > commands and a plot. > > > > Jim > > > >> On Mon, Sep 19, 2022 at 9:12 PM Parkhurst, David > >> wrote: > >> > >> I’ve been retired since ‘06 and have forgotten most of R. Now I have a > >> use for it, with some data from Bloomington’s Environmental Commission. > >> > >> I have a dataframe (obtained from read.csv) that contains numerous > >> columns, including time (in Excel’s 18:00 format), and DNO2, and MNO2 from > >> two air quality instruments. > >> > >> I’d like a plot of both the NO2 measurements against time. I be happy to > >> use either ordinary R plots or ggplot2 ones, if that would be a better > >> way. I’d much appreciate help. > >> > >>[[alternative HTML version deleted]] > >> > >> __ > >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >> https://stat.ethz.ch/mailman/listinfo/r-help > >> PLEASE do read the posting guide > >> http://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
Hi David, Since you used read.csv to get the data frame, the file must be i text format. If you can include a few lines of the input (with made up NO2 values if necessary), it would be easy to respond with the required commands and a plot. Jim On Mon, Sep 19, 2022 at 9:12 PM Parkhurst, David wrote: > > I’ve been retired since ‘06 and have forgotten most of R. Now I have a use > for it, with some data from Bloomington’s Environmental Commission. > > I have a dataframe (obtained from read.csv) that contains numerous columns, > including time (in Excel’s 18:00 format), and DNO2, and MNO2 from two air > quality instruments. > > I’d like a plot of both the NO2 measurements against time. I be happy to use > either ordinary R plots or ggplot2 ones, if that would be a better way. I’d > much appreciate help. > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
David,
Do these work for you? (I am resending this so others can see. The original
only went to you.)
library(lubridate)
a<-c(4, 5, 6)
b<-c("18:00", "18:01", "18:02")
c<-as.data.frame(cbind(a,b))
c$d<-hm(c$b)
c$d$minute[2]
I could do it manually like this (where FrHour is fractional hour)
a<-c(4, 5, 6)
b<-c("18:00", "18:09", "18:42")
c<-as.data.frame(cbind(a,b))
c$d<-hm(c$b)
c$d$minute[2]
c$Hour=as.numeric(substr(c$b,1,2))
c$Second=as.numeric(substr(c$b,4,5))
c$FrHour <- c$Hour + c$Second/60
As I was writing Rui posted another option with code for graphing.
Tim
-Original Message-
From: R-help On Behalf Of Parkhurst, David
Sent: Sunday, September 18, 2022 4:27 PM
To: r-help@r-project.org
Subject: [R] Need help plotting
[External Email]
I�ve been retired since �06 and have forgotten most of R. Now I have a use for
it, with some data from Bloomington�s Environmental Commission.
I have a dataframe (obtained from read.csv) that contains numerous columns,
including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air
quality instruments.
I�d like a plot of both the NO2 measurements against time. I be happy to use
either ordinary R plots or ggplot2 ones, if that would be a better way. I�d
much appreciate help.
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
See ?date-time and/or ?strptime for how to convert what I presume is character data in your datetime column to a POSIXct object. (you may first need to convert from a factor to character with as.character() ). Then follow Tim's prescription for ggplot or see ?axis.Date (especially the examples) for how to do it with base R plots. Cheers, Bert On Mon, Sep 19, 2022 at 5:15 AM Ebert,Timothy Aaron wrote: > My version of this email has a bunch of ? that I do not know how to > interpret. Emails to this group need to be in plain text. HTML content is > deleted or converted and impossible or at least difficult to interpret. > > Do not share confidential data. Please change some numbers or variable > names and share that. > If this helps: > 1) Make sure your time variable is a datetime object. > 2) At least in ggplot it should now behave as expected. > ggplot(df, aes(y=NO2, x=datetime)) + geom_point() > > That will be a start as a scatterplot, but the graph can be customized or > changed if scatterplot was not desired. > > Tim > > -Original Message- > From: R-help On Behalf Of Parkhurst, David > Sent: Sunday, September 18, 2022 4:27 PM > To: r-help@r-project.org > Subject: [R] Need help plotting > > [External Email] > > I�ve been retired since �06 and have forgotten most of R. Now I have a > use for it, with some data from Bloomington�s Environmental Commission. > > I have a dataframe (obtained from read.csv) that contains numerous > columns, including time (in Excel�s 18:00 format), and DNO2, and MNO2 from > two air quality instruments. > > I�d like a plot of both the NO2 measurements against time. I be happy to > use either ordinary R plots or ggplot2 ones, if that would be a better > way. I�d much appreciate help. > > [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need help plotting
My version of this email has a bunch of ? that I do not know how to interpret. Emails to this group need to be in plain text. HTML content is deleted or converted and impossible or at least difficult to interpret. Do not share confidential data. Please change some numbers or variable names and share that. If this helps: 1) Make sure your time variable is a datetime object. 2) At least in ggplot it should now behave as expected. ggplot(df, aes(y=NO2, x=datetime)) + geom_point() That will be a start as a scatterplot, but the graph can be customized or changed if scatterplot was not desired. Tim -Original Message- From: R-help On Behalf Of Parkhurst, David Sent: Sunday, September 18, 2022 4:27 PM To: r-help@r-project.org Subject: [R] Need help plotting [External Email] I�ve been retired since �06 and have forgotten most of R. Now I have a use for it, with some data from Bloomington�s Environmental Commission. I have a dataframe (obtained from read.csv) that contains numerous columns, including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air quality instruments. I�d like a plot of both the NO2 measurements against time. I be happy to use either ordinary R plots or ggplot2 ones, if that would be a better way. I�d much appreciate help. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Need help plotting
I�ve been retired since �06 and have forgotten most of R. Now I have a use for it, with some data from Bloomington�s Environmental Commission. I have a dataframe (obtained from read.csv) that contains numerous columns, including time (in Excel�s 18:00 format), and DNO2, and MNO2 from two air quality instruments. I�d like a plot of both the NO2 measurements against time. I be happy to use either ordinary R plots or ggplot2 ones, if that would be a better way. I�d much appreciate help. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need Help Plotting Line for multiple linear regression
Hi -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of Craig O'Connell Sent: Wednesday, February 13, 2013 11:03 PM To: r-help@r-project.org Subject: [R] Need Help Plotting Line for multiple linear regression Hello, My name is Craig and I need help plotting a line for a multiple linear regression in R. Here is my sample data (filename: convis.txt) Output of convis.txt is (vis and density being predictors of either avoidance or entrance): vis den avoid entrance 1 10 1 0. 0. 2 10 3 0.8750 0. 38 3 0.8180 0.0300 48 3 0.6670 0.0667 58 1 0.2110 0. 66 1 0.2500 0. 7 10 1 0.3000 0. 8 10 1 0.1050 0. 98 1 0.7000 0.1000 10 3 5 0.1176 0.0588 11 3 5 0.3077 0.1150 12 3 9 0.9090 0.0900 13 3 7 0.7778 0.1110 14 3 5 0.5560 0.1110 15 3 1 0.5710 0. 16 3 4 0.5710 0. In order to do the multiple regression, I used the following coding: double=read.table(convis.txt,header=TRUE) attach(double) double stem(vis) stem(den) stem(avoid) stem(entrance) plot(entrance,vis*den) *as means to see how the interaction This is not an interaction, you just multiply vis and den and plot entrance on x axis and vis*den on y axis, so basically you want to model vis*den by entrance. between visibility and density may impact entrance behaviors model6=lm(entrance~vis*den) This model is oposite of what you plotted. model6 summary(model6) *abline(model6) *Here is the issue as I used this for my simple linear regression technique, but do not know what to use for a multiple regression* You seem to not understand how the multiple regression output and abline works. Based on what you want you can do plot(vis*den, entrance) model6 - lm(entrance~I(vis*den)) abline(model6) however your model will have only intercept and one coefficient for variable x=vis*den If you want to have separate coefficients for vis ***and*** den and their interaction you can use model6=lm(entrance~vis*den) but in this case resulting coefficients are Intercept, vis, den and interaction between vis and den. In that case beside of other procedures for model evaluation you can do. plot(entrance, fitted(model6)) abline(0,1) Regards Petr If anybody can provide some feedback on this, it would be greatly appreciated. Kind Regards, Craig -- Craig O'Connell University of Massachusetts Dartmouth Marine Biologist www.youtube.com/craigpoconnell craigosea.blogspot.com [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting- guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Need Help Plotting Line for multiple linear regression
The abline function works fine for simple linear regression because there is only 1 line, but with multiple linear regression there are an infinite number of lines and you need to decide which to plot (or find a way to plot t he plane/hyperplane/surface/etc.). One option is to use the Predict.Plot and TkPredict functions in the TeachingDemos package. These will plot the relationship between the response and 1 of the predictors conditioned on values of the other predictors. On Wed, Feb 13, 2013 at 3:02 PM, Craig O'Connell craigpoconn...@gmail.comwrote: Hello, My name is Craig and I need help plotting a line for a multiple linear regression in R. Here is my sample data (filename: convis.txt) Output of convis.txt is (vis and density being predictors of either avoidance or entrance): vis den avoid entrance 1 10 1 0. 0. 2 10 3 0.8750 0. 38 3 0.8180 0.0300 48 3 0.6670 0.0667 58 1 0.2110 0. 66 1 0.2500 0. 7 10 1 0.3000 0. 8 10 1 0.1050 0. 98 1 0.7000 0.1000 10 3 5 0.1176 0.0588 11 3 5 0.3077 0.1150 12 3 9 0.9090 0.0900 13 3 7 0.7778 0.1110 14 3 5 0.5560 0.1110 15 3 1 0.5710 0. 16 3 4 0.5710 0. In order to do the multiple regression, I used the following coding: double=read.table(convis.txt,header=TRUE) attach(double) double stem(vis) stem(den) stem(avoid) stem(entrance) plot(entrance,vis*den) *as means to see how the interaction between visibility and density may impact entrance behaviors model6=lm(entrance~vis*den) model6 summary(model6) *abline(model6) *Here is the issue as I used this for my simple linear regression technique, but do not know what to use for a multiple regression* If anybody can provide some feedback on this, it would be greatly appreciated. Kind Regards, Craig -- Craig O'Connell University of Massachusetts Dartmouth Marine Biologist www.youtube.com/craigpoconnell craigosea.blogspot.com [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Gregory (Greg) L. Snow Ph.D. 538...@gmail.com [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Need Help Plotting Line for multiple linear regression
Hello, My name is Craig and I need help plotting a line for a multiple linear regression in R. Here is my sample data (filename: convis.txt) Output of convis.txt is (vis and density being predictors of either avoidance or entrance): vis den avoid entrance 1 10 1 0. 0. 2 10 3 0.8750 0. 38 3 0.8180 0.0300 48 3 0.6670 0.0667 58 1 0.2110 0. 66 1 0.2500 0. 7 10 1 0.3000 0. 8 10 1 0.1050 0. 98 1 0.7000 0.1000 10 3 5 0.1176 0.0588 11 3 5 0.3077 0.1150 12 3 9 0.9090 0.0900 13 3 7 0.7778 0.1110 14 3 5 0.5560 0.1110 15 3 1 0.5710 0. 16 3 4 0.5710 0. In order to do the multiple regression, I used the following coding: double=read.table(convis.txt,header=TRUE) attach(double) double stem(vis) stem(den) stem(avoid) stem(entrance) plot(entrance,vis*den) *as means to see how the interaction between visibility and density may impact entrance behaviors model6=lm(entrance~vis*den) model6 summary(model6) *abline(model6) *Here is the issue as I used this for my simple linear regression technique, but do not know what to use for a multiple regression* If anybody can provide some feedback on this, it would be greatly appreciated. Kind Regards, Craig -- Craig O'Connell University of Massachusetts Dartmouth Marine Biologist www.youtube.com/craigpoconnell craigosea.blogspot.com [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
