[R] saving png images and X11

[Jim Lemon]

Hi Bogdan,
If we take the error message seriously, it may be that the initial X11
image was never displayed. When this very suspicious black box
function tried to transfer the image to a PNG file, it wasn't there or
the function couldn't find it.

Jim

On Sun, Feb 27, 2022 at 2:51 AM Bogdan Tanasa <tanasa using gmail.com> wrote:
>
> Dear all,
>
> I am using a R package that renders the png images. As I am running the
> command below in a script, I would like to avoid the error below and still
> be able to save the images. How shall I do it ?
>
> > ChIPQCreport(SAMPLE, +              reportName = paste(ENTRY, "ChIPQC", sep="."), +              reportFolder = paste(ENTRY, "ChIPQCreport", sep="."))
> Saving 7 x 7 in image
> Error in png_dev(..., res = dpi, units = "in") : X11 is not available
>
> Shall I add the option :
>
> options(bitmapType='cairo')
>
> the png images are skipped and not saved on the disk. Thanks a lot,
>
> Bogdan
>
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