[R] Executing an R script and show the plots.

[Sorkin, John]

Felix,
I suggest you consider using an IDE such as RStudio as you develop and run R code. An integrated development environment will allow you to concentrate on learning R
rather on the mechanics of running R in a
non-standard environment.
John

John David Sorkin M.D., Ph.D.
Professor of Medicine
Chief, Biostatistics and Informatics
University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
Baltimore VA Medical Center
10 North Greene Street<x-apple-data-detectors://12>
GRECC<x-apple-data-detectors://12> (BT/18/GR)
Baltimore, MD 21201-1524<x-apple-data-detectors://13/0>
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(Fax) 410-605-7913<tel:410-605-7913> (Please call phone number above prior to faxing)

On Jan 26, 2020, at 3:20 PM, David Winsemius <dwinsemius using comcast.net> wrote:

You need to understand that the R interpreter does not have an interactive plot device when run as a script from an OS command line. You need to open an output device, `print` the output of the ggplot call, and then  _after_ closing the device appropriately, open the output in an appropriate viewer supplied by your unstated OS.


?Devices # brings up a list of possible devices and has a "See Also" section that says:

===========================

The individual help files for further information on any of the devices listed here;

on Windows:
windows.options,

on a Unix-alike:
X11.options, quartz.options,

ps.options and pdf.options for how to customize devices.

dev.interactive, dev.cur, dev.print, graphics.off, image, dev2bitmap.

On Unix-alikes only:
capabilities to see if X11, jpeg, png, tiff, quartz and the cairo-based devices are available.
==============================


So do some further reading to educate yourself.


--

David.

On 1/24/20 8:32 AM, Felix Blind wrote:
Dear R users,

i am a python user trying to get my statistical knowledge up to speed
and R is the language for that.
I would like to run R scripts like that: R -f script.r and still get the
plots that pop up.

When I type the following code in the R REPL I get a nice plot:

library(ggplot2)

data("midwest",
package="ggplot2")

ggplot(midwest, aes(x=area, y=poptotal)) + geom_point()

But when I put the same code in a file script.r and run it with R -f
script.r or if I source it in the REPL with source("script.r") I do not
get any plots shown.

Can you guys tell me what I do wrong. (Apart from either using RStudio
or the REPL exclusively)

Kind regards,
Felix

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