Felipe Carrillo
2007-Jul-10 14:58 UTC
[R] How to plot two variables using a secondary Y axis
Date Fo Co 6/27/2007 57.1 13.9 6/28/2007 57.7 14.3 6/29/2007
57.8 14.3 6/30/2007 57 13.9 7/1/2007 57.1 13.9 7/2/2007 57.2
14.0 7/3/2007 57.3 14.1 7/4/2007 57.6 14.2 7/5/2007 58 14.4
7/6/2007 58.1 14.5 7/7/2007 58.2 14.6 7/8/2007 58.4 14.7 7/9/2007
58.7
14.8
Hello all:
I am a newbie to R, and I was wondering how can I plot the Temperature values
above using Lattice or ggplot2 code. I want Date(X axis), Degrees F(Y axis) and
Degrees C( on a secondary Y axis).
Thanks
---------------------------------
[[alternative HTML version deleted]]
Sundar Dorai-Raj
2007-Jul-10 15:14 UTC
[R] How to plot two variables using a secondary Y axis
Felipe Carrillo said the following on 7/10/2007 7:58 AM:> Date Fo Co 6/27/2007 57.1 13.9 6/28/2007 57.7 14.3 6/29/2007 57.8 14.3 6/30/2007 57 13.9 7/1/2007 57.1 13.9 7/2/2007 57.2 14.0 7/3/2007 57.3 14.1 7/4/2007 57.6 14.2 7/5/2007 58 14.4 7/6/2007 58.1 14.5 7/7/2007 58.2 14.6 7/8/2007 58.4 14.7 7/9/2007 58.7 > 14.8 > > Hello all: > I am a newbie to R, and I was wondering how can I plot the Temperature values above using Lattice or ggplot2 code. I want Date(X axis), Degrees F(Y axis) and Degrees C( on a secondary Y axis). > Thanks > > >For lattice, see this thread: http://finzi.psych.upenn.edu/R/Rhelp02a/archive/102768.html HTH, --sundar
Gabor Grothendieck
2007-Jul-10 22:25 UTC
[R] How to plot two variables using a secondary Y axis
We assume the Fo and Co represent the same data except in different
units (this seems to be approximately the case) so there is really
only one variable being measured here. If that's not the case let
me know. Below we read the data, define enough padding around plot
to do what we want, call xyplot, draw the right axis and add the right
y lablel.
library(lattice)
library(grid) # needed for grid.text
# data
Lines.raw <- "Date Fo Co
6/27/2007 57.1 13.9
6/28/2007 57.7 14.3
6/29/2007 57.8 14.3
6/30/2007 57 13.9
7/1/2007 57.1 13.9
7/2/2007 57.2 14.0
7/3/2007 57.3 14.1
7/4/2007 57.6 14.2
7/5/2007 58 14.4
7/6/2007 58.1 14.5
7/7/2007 58.2 14.6
7/8/2007 58.4 14.7
7/9/2007 58.7 14.8
"
# in reality next stmt would be DF <- read.table("myfile.dat",
header = TRUE)
DF <- read.table(textConnection(Lines.raw), header = TRUE)
DF$Date <- as.Date(DF$Date, "%m/%d/%Y")
par.settings <- list(
layout.widths = list(left.padding = 10, right.padding = 10),
layout.heights = list(bottom.padding = 10, top.padding = 10)
)
xyplot(Co ~ Date, DF, default.scales = list(y = list(relation =
"free")),
ylab = "C", par.settings = par.settings)
trellis.focus("panel", 1, 1, clip.off = TRUE)
pr <- pretty(DF$Fo)
at <- 5/9 * (pr - 32)
panel.axis("right", at = at, lab = pr, outside = TRUE)
grid.text("F", x = 1.1, rot = 90) # right y axis label
trellis.unfocus()
On 7/10/07, Felipe Carrillo <mazatlanmexico at yahoo.com>
wrote:> Date Fo Co 6/27/2007 57.1 13.9 6/28/2007 57.7 14.3
6/29/2007 57.8 14.3 6/30/2007 57 13.9 7/1/2007 57.1 13.9 7/2/2007
57.2 14.0 7/3/2007 57.3 14.1 7/4/2007 57.6 14.2 7/5/2007 58 14.4
7/6/2007 58.1 14.5 7/7/2007 58.2 14.6 7/8/2007 58.4 14.7 7/9/2007
58.7
> 14.8
>
> Hello all:
> I am a newbie to R, and I was wondering how can I plot the Temperature
values above using Lattice or ggplot2 code. I want Date(X axis), Degrees F(Y
axis) and Degrees C( on a secondary Y axis).
> Thanks
>
>
>
>
>
>
>
>
>
>
> ---------------------------------
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch 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.
>
hadley wickham
2007-Jul-11 05:57 UTC
[R] How to plot two variables using a secondary Y axis
On 7/10/07, Felipe Carrillo <mazatlanmexico at yahoo.com> wrote:> Date Fo Co 6/27/2007 57.1 13.9 6/28/2007 57.7 14.3 6/29/2007 57.8 14.3 6/30/2007 57 13.9 7/1/2007 57.1 13.9 7/2/2007 57.2 14.0 7/3/2007 57.3 14.1 7/4/2007 57.6 14.2 7/5/2007 58 14.4 7/6/2007 58.1 14.5 7/7/2007 58.2 14.6 7/8/2007 58.4 14.7 7/9/2007 58.7 > 14.8 > > Hello all: > I am a newbie to R, and I was wondering how can I plot the Temperature values above using Lattice or ggplot2 code. I want Date(X axis), Degrees F(Y axis) and Degrees C( on a secondary Y axis).Hi Felipe, It's not currently possible with ggplot2, but it is something on my to do list. Hadley