RCall prints R output to command line when calling R package

[gtollefson]

Is it possible to suppress printing the text from the R command line REPL when calling an R package from Julia? I'm using RCall in a Julia command line tool and the printed text is a little messy.

[randy3k]

You could put a semi colon at the end to avoid printing the returned object

[gtollefson]

@randy3k I'm having some trouble with this. I've tried both:

`reval("

library(heatmaply);

heatmaply(x)

")

`

and also

`reval("

library(heatmaply)

heatmaply(x)

");

`

Both do not suppress printing the returned object. Do you see anything I am doing wrong?

[Non-Contradiction]

The way Randy suggests can suppress the returned object, so julia won't display the returned RObject. But it doesn't deal with the package startup message displayed by R.
To suppress the package startup message, you need suppressPackageStartupMessages in R, or you can use Suppressor.jl in julia. So the solution is:

julia> using RCall
 
julia> using Suppressor

julia> @suppress reval("library(heatmaply);");

or

julia> using RCall

julia> reval("suppressPackageStartupMessages(library(heatmaply))");

[randy3k]

Oh, it seems that I have misunderstood OP's question.

[gtollefson]

@Non-Contradiction This worked well. Sorry for the late reply. Thanks to you and @randy3k.