How to send commands to R in ESS

Question

I, an R user, decided recently to try using Emacs-ESS combo. So far I have been work in a single-window mode (C-x 1) just for text highlighting.

Now I am trying split it in two windows (C-x 3) to work on an .R file in the left window, and have R execute the commands in the right window. Something like this:

After selecting sections of code on the left, how can I "send" it as a command to the right? Essentially, I want the input to remain on on the left (so that I can incrementally build the code up) and the actual R output on (including error messages) the right.

effel · Accepted Answer · 2017-06-15 21:05:25Z

2

Two good options:

ess-eval-region-or-function-or-paragraph vis (C-M-x): Sends the current selected region or function or paragraph.

ess-eval-region-or-function-or-paragraph-and-step (C-c C-c): Like ess-eval-region-or-function-or-paragraph but steps to next line of code.

Source: ESS manual.

answered Jun 15, 2017 at 21:05

effel

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1 Comment

MichaelChirico Over a year ago

Is something different happening if this is done on an R script inside a package? I am running this and the command is sent to the buffer, but apparently not executed. The variable does not exist in the session. There are a few + surrounding the code which is not what I'm used to. This only seems to happen to scripts in package R/ folders.

Fer Arce · Accepted Answer · 2017-11-12 22:30:53Z

1

You can also use: C-c-p to send a paragraph or region between two empty lines C-c-r to send a region that has been selected and is highlighted

I prefer this way because you only need to press the Ctrl key

there are normally many ways to send code to the R console. It will take you time to realize what is best for you, or you may eventually change the key bindings.

answered Nov 12, 2017 at 22:30

Fer Arce

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