[R] saving plot both as jpg and pdf

[Greg Snow]

Plotting functions only send the plot to the current device (in your case the 2nd one opened).  You can see all the currently open devices with dev.list, you can see which is current with dev.cur, you can change which is current using dev.set (and possibly dev.next and dev.prev).  Look at the help on these functions.

To get copies of the same graph in both devices you need to either:

1. plot the graph in the current device
2. switch devices
3. issue the same plot command in the now current device

Or:

1. plot the graph in the current device
2. use dev.copy (or related functions) to copy the current graph to another device

Note that the 2nd only works when recording is turned on (which is not the default for jpeg or pdf).
Also, the 2 methods may result in small differences between the graphs based on which sets of defaults are used.

Another option is to use the dev.copy2pdf function to create the pdf file without opening a pdf device yourself.

Hope this helps,

--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
(801) 408-8111



> -----Original Message-----
> From: r-help-bounces at r-project.org
> [mailto:r-help-bounces at r-project.org] On Behalf Of Monica Pisica
> Sent: Tuesday, July 22, 2008 7:50 AM
> To: r-help at r-project.org
> Subject: [R] saving plot both as jpg and pdf
> Importance: High
>
>
> Hi,
>
> I want to save a plot automatically as a pdf and jpg, and if
> I open the pdf device first and jpeg second only the jpeg
> file saves correctly .... If I do reverse, only the pdf file
> saves correctly.
>
> pdf('E:/my_graphs/test1.pdf', bg = "white")
> jpeg('E:/my_graphs/test1.jpg', quality = 100, bg = "white",
> res = 200, width = 7, height = 7, units = "in") plot(seq(1,
> 10), seq(1, 10))
> dev.off()
> dev.off()
>
> In this case the pdf is not saved correctly and cannot be
> viewed by Adobe - the error is "it has no pages". If the jpeg
> device is first open .... It will save an empty page. Of course
> I can open one device at a time have the plot saved and close
> that device, and open it again and do same thing, but I think
> I should be able to have the plot command only once. I am
> working on a Windows machine, R.2.7.0.
>
> Any suggestions will be very much appreciated.
>
> Thanks,
>
> Monica
>
>
> _________________________________________________________________
>
>
> enger2_072008
> ______________________________________________
> R-help at 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.
>