Re: [R] Secondary y axis in ggplot2: did not respond when change its y-axis value

2021-01-12 Thread Thierry Onkelinx via R-help 
The second y-axis in ggplot2 is only intended to relabel an axis with a
fixed transformation. E.g. one axis in degree Celcius and one in Kelvin,
km and miles, ...
It does not rescale the variables.

It looks like you want to display two variables with unrelated units on the
same y-axis. That is not a good idea. https://blog.datawrapper.de/dualaxis/

ir. Thierry Onkelinx
Statisticus / Statistician

Vlaamse Overheid / Government of Flanders
INSTITUUT VOOR NATUUR- EN BOSONDERZOEK / RESEARCH INSTITUTE FOR NATURE AND
FOREST
Team Biometrie & Kwaliteitszorg / Team Biometrics & Quality Assurance
thierry.onkel...@inbo.be
Havenlaan 88 bus 73, 1000 Brussel
www.inbo.be

///
To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey
///




Op vr 8 jan. 2021 om 02:02 schreef Marna Wagley :

> Hi R users,
> I was trying to plot a graph with a secondary axis, and used the following
> code for the data but the secondary line and secondary y -axis value did
> not match. I would like to show both lines in one graph.
>
> Any suggestions?
>
> library(ggplot2)
> library(reshape2)
> daT<-structure(list(x = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L,
> 3L, 4L, 5L, 6L, 7L, 8L), y1 = c(9754L, 1051L, 5833L, 5769L, 2479L,
> 470L, 5828L, 174L, 2045L, 6099L, 8780L, 8732L, 4053L, 9419L,
> 4728L, 3587L), y2 = c(0.51, 0.61, 0.3, 0.81, 0.89, 0, 1.9, 0.76,
> 0.87, 0.29, 0, 0.42, 0.73, 0.96, 0.62, 0.06), group = c("A",
> "A", "A", "A", "A", "A", "A", "A", "B", "B", "B", "B", "B", "B",
> "B", "B")), class = "data.frame", row.names = c(NA, -16L))
> print(daT)
> daT1<-melt(daT, id.vars=c("x", "group"))
> daT1%>%
>   ggplot() +
>   geom_line(aes(x = x, y = value, group = variable, color = variable)) +
>   facet_wrap(~group) +
>   scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))
>
> [[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]]

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Re: [R] Secondary y axis in ggplot2: did not respond when change its y-axis value

2021-01-08 Thread Marna Wagley 
Thank you Rui and Thierry for the suggestion, it helped me.
thanks


On Fri, Jan 8, 2021 at 6:58 AM Rui Barradas  wrote:

> Hello,
>
> What about the following?
> First get the min and max of value by variable == "y1".
> Then use that range to scale up "y2".
>
> rng <- tapply(daT1$value, daT1$variable, range)$y1
>
> ggplot(data = daT1, aes(x = x, group = variable, color = variable)) +
>geom_line(data = subset(daT1, variable == "y1"),
>  aes(y = value)) +
>geom_line(data = subset(daT1, variable == "y2"),
>  aes(y = value*diff(rng) + rng[1])) +
>facet_wrap(~group) +
>scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))
>
>
> Hope this helps,
>
> Rui Barradas
>
> Às 01:01 de 08/01/21, Marna Wagley escreveu:
> > Hi R users,
> > I was trying to plot a graph with a secondary axis, and used the
> following
> > code for the data but the secondary line and secondary y -axis value did
> > not match. I would like to show both lines in one graph.
> >
> > Any suggestions?
> >
> > library(ggplot2)
> > library(reshape2)
> > daT<-structure(list(x = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L,
> > 3L, 4L, 5L, 6L, 7L, 8L), y1 = c(9754L, 1051L, 5833L, 5769L, 2479L,
> > 470L, 5828L, 174L, 2045L, 6099L, 8780L, 8732L, 4053L, 9419L,
> > 4728L, 3587L), y2 = c(0.51, 0.61, 0.3, 0.81, 0.89, 0, 1.9, 0.76,
> > 0.87, 0.29, 0, 0.42, 0.73, 0.96, 0.62, 0.06), group = c("A",
> > "A", "A", "A", "A", "A", "A", "A", "B", "B", "B", "B", "B", "B",
> > "B", "B")), class = "data.frame", row.names = c(NA, -16L))
> > print(daT)
> > daT1<-melt(daT, id.vars=c("x", "group"))
> > daT1%>%
> >ggplot() +
> >geom_line(aes(x = x, y = value, group = variable, color = variable)) +
> >facet_wrap(~group) +
> >scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))
> >
> >   [[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]]

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Re: [R] Secondary y axis in ggplot2: did not respond when change its y-axis value

2021-01-08 Thread Rui Barradas 

Hello,

What about the following?
First get the min and max of value by variable == "y1".
Then use that range to scale up "y2".

rng <- tapply(daT1$value, daT1$variable, range)$y1

ggplot(data = daT1, aes(x = x, group = variable, color = variable)) +
  geom_line(data = subset(daT1, variable == "y1"),
aes(y = value)) +
  geom_line(data = subset(daT1, variable == "y2"),
aes(y = value*diff(rng) + rng[1])) +
  facet_wrap(~group) +
  scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))


Hope this helps,

Rui Barradas

Às 01:01 de 08/01/21, Marna Wagley escreveu:

Hi R users,
I was trying to plot a graph with a secondary axis, and used the following
code for the data but the secondary line and secondary y -axis value did
not match. I would like to show both lines in one graph.

Any suggestions?

library(ggplot2)
library(reshape2)
daT<-structure(list(x = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L,
3L, 4L, 5L, 6L, 7L, 8L), y1 = c(9754L, 1051L, 5833L, 5769L, 2479L,
470L, 5828L, 174L, 2045L, 6099L, 8780L, 8732L, 4053L, 9419L,
4728L, 3587L), y2 = c(0.51, 0.61, 0.3, 0.81, 0.89, 0, 1.9, 0.76,
0.87, 0.29, 0, 0.42, 0.73, 0.96, 0.62, 0.06), group = c("A",
"A", "A", "A", "A", "A", "A", "A", "B", "B", "B", "B", "B", "B",
"B", "B")), class = "data.frame", row.names = c(NA, -16L))
print(daT)
daT1<-melt(daT, id.vars=c("x", "group"))
daT1%>%
   ggplot() +
   geom_line(aes(x = x, y = value, group = variable, color = variable)) +
   facet_wrap(~group) +
   scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))

[[alternative HTML version deleted]]

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[R] Secondary y axis in ggplot2: did not respond when change its y-axis value

2021-01-07 Thread Marna Wagley 
Hi R users,
I was trying to plot a graph with a secondary axis, and used the following
code for the data but the secondary line and secondary y -axis value did
not match. I would like to show both lines in one graph.

Any suggestions?

library(ggplot2)
library(reshape2)
daT<-structure(list(x = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 1L, 2L,
3L, 4L, 5L, 6L, 7L, 8L), y1 = c(9754L, 1051L, 5833L, 5769L, 2479L,
470L, 5828L, 174L, 2045L, 6099L, 8780L, 8732L, 4053L, 9419L,
4728L, 3587L), y2 = c(0.51, 0.61, 0.3, 0.81, 0.89, 0, 1.9, 0.76,
0.87, 0.29, 0, 0.42, 0.73, 0.96, 0.62, 0.06), group = c("A",
"A", "A", "A", "A", "A", "A", "A", "B", "B", "B", "B", "B", "B",
"B", "B")), class = "data.frame", row.names = c(NA, -16L))
print(daT)
daT1<-melt(daT, id.vars=c("x", "group"))
daT1%>%
  ggplot() +
  geom_line(aes(x = x, y = value, group = variable, color = variable)) +
  facet_wrap(~group) +
  scale_y_continuous(sec.axis = sec_axis(~ .*0.0001))

[[alternative HTML version deleted]]

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