Jeff,
Thank you so much for the challenge. It is inspiring.
Jibrin
On Sun, Jan 17, 2021 at 7:04 PM Jeff Newmiller
wrote:
> This is an opportunity for you to think for yourself (r-help) instead of
> expecting solutions neatly wrapped and delivered (r-do-my-work-for-me).
> Remove the no-longer-nee
Hello Peter,
Thanks for your input. What I need runs like this.
df1 <- read.table("SWSdata_1998_2002", header = TRUE)
> df1$date <- as.Date(paste(df1$year, df1$day),
+ Error: unexpected end of input
> df1$date <- as.Date(paste(df1$year, df1$day),format = "%Y %j",origin =
"1998-01-01")
> df2 <- df1[
Hi Bert,
Thanks for your time. I will check some relevant tutorias. I am very
grateful.
Jibrin
Th
On Fri, Jan 15, 2021 at 7:49 PM Bert Gunter wrote:
> There are many good tutorials for R. As a "newbie", you need to avail
> yourself of them. Although this forum is meant to "help", it is not
> des
Hellow Rui,
The code helped.
I am very grateful.
Jibrin
On Mon, Jan 18, 2021 at 12:14 AM Rui Barradas wrote:
> Hello,
>
> My code didn't produce only 6 rows, it displayed only 6 rows. But all
> rows now have a date column.
>
> As for the first question,
>
> df2 <- df1[c("SWS", "date")]
>
>
> sel
Hello,
My code didn't produce only 6 rows, it displayed only 6 rows. But all
rows now have a date column.
As for the first question,
df2 <- df1[c("SWS", "date")]
selects the columns with those names. I didn't rewrite the original df1,
but if you want to, assign to df1, without creating df2
This is an opportunity for you to think for yourself (r-help) instead of
expecting solutions neatly wrapped and delivered (r-do-my-work-for-me). Remove
the no-longer-needed columns once the desired columns are available.
On January 17, 2021 7:12:28 AM PST, Jibrin Alhassan
wrote:
>Hi Barradas,
Hi Barradas,
Thanks for your assistance. It has brought me closer to what I am looking
for. I tried your code as shown below:
> df1 <- read.table("SWSdata_1998_2002", header = TRUE)
> df1$date <- as.Date(paste(df1$year, df1$day),format = "%Y %j",origin =
"1998-01-01")
> head(df1)
year day Hr SWS
Something like this?
> as.Date(ISOdate(1998,1,1))+(1:100)-1
[1] "1998-01-01" "1998-01-02" "1998-01-03" "1998-01-04" "1998-01-05"
[6] "1998-01-06" "1998-01-07" "1998-01-08" "1998-01-09" "1998-01-10"
[11] "1998-01-11" "1998-01-12" "1998-01-13" "1998-01-14" "1998-01-15"
[16] "1998-01-16" "1998-
Hello,
Thanks for the data, it makes things easier.
df1 <- read.table("Jibrin_data.txt", header = TRUE)
#'data.frame': 168 obs. of 4 variables:
# $ year: int 1998 1998 1998 1998 1998 1998 1998 1998 1998 1998 ...
# $ day : int 1 2 3 4 5 6 7 8 9 10 ...
# $ Hr : int 0 0 0 0 0 0 0 0 0 0 ...
#
Hi Barradas
Sorry for the delay. Below is a section of my data. I have up to 1826
covering 1998 to 2002
year day Hr SWS
1998 1 0 344.
1998 2 0 346.
1998 3 0 356.
1998 4 0 332.
1998 5 0 302.
1998 6 0 329.
1998 7 0 395.
1998 8 0 359.
1998 9 0 471.
1998 10 0 3
Hi Jibrin,
solar_wind_sps<-data.frame(sws=306,date="2021-016")
solar_wind_spd
solar_wind_spd$date<-as.Date(solar_wind_spd$date,"%Y-%j")
solar_wind_spd
This changes the "date" field to an actual date object. If you just
want to change a character string date to another format:
solar_wind_spd$date<
On Fri, 15 Jan 2021 at 18:55, Jibrin Alhassan
wrote:
>
> Dear R users,
> I am very new to R software. I have solar wind speed data needed for my
> work. How do I convert day in the year to year, month, and day with R
> software? I have used this code
> as.Date(0, origin = "1998-01-01")
Look at th
Use one of the POSIXt classes, POSIXct or POSIXlt, instead of the Date
class.
They have more methods for doing arithmetic. E.g.,
> dates <- as.POSIXct(tz="UTC", c("2004-03-01", "2005-03-01"))
> difftime(dates, trunc(dates, units="year"), units="days") # add 1 if you
want -01-01 to be day 1 in
There are many good tutorials for R. As a "newbie", you need to avail
yourself of them. Although this forum is meant to "help", it is not
designed to provide tutorials. Understanding basic R functionality is
largely assumed here.
Searching on "tutorials on date-time data in R" brought up many
poss
Hello,
No dataset was attached. Like the posting guide says,
No binary attachments except for PS, PDF, and some image and archive
formats (others are automatically stripped off because they can contain
malicious software). Files in other formats and larger ones should
rather be put on the web
Dear R users,
I am very new to R software. I have solar wind speed data needed for my
work. How do I convert day in the year to year, month, and day with R
software? I have used this code
as.Date(0, origin = "1998-01-01")
but it can only convert one day of the year at a time. Meanwhile, I have up
t
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