[R-pkg-devel] plot graph (png, svg, eps, pdf, vdx, ok tikz) to device

Am 15.05.2018 um 13:54 schrieb Johannes Ranke <johannes.ranke at jrwb.de>:

Hi,

have a look at the grImport package. It can import eps, so at least you get a 
vector based graph. 

Alternatively, you may want to check grImport2 which imports svg.

Kind regards,

Johannes

Am Dienstag, 15. Mai 2018, 13:22:16 CEST schrieb Rainer Krug:

Hi

I asked the question at stack exchange yesterday (
https://stackoverflow.com/q/50325139/632423 ) and did not get a response so
far, so I repost it here:

####

I have the following situation: I use an external command (plantuml -
http://plantuml.com/ ) to create a graph. This is done via R by using a
(my) package ( https://github.com/rkrug/plantuml ). The resulting graph can
be a file (png, svg, eps, pdf, vdx or LaTeX/Tikz with or without preamble)
or I can send the image to stdout, using the same formats.

Now I want to plot this graph as R-like as possible, i.e. in a graphic
device. At the moment I am using a temporary file, which I display using
readPNG() and grid::grid.raster() which works, but I am not that happy with
this approach as

   ? I have to use a temporary file which I would like to avoid, and
   ? it is a raster format and I would prefer a vector format.

My question is therefore:

   ? Is there a way to display any of the vector formats in a graphics device
in R? ? Can I pipe stdout (the result from the call to plantuml) directly
into the device (or through any function) without having to create an
intermediate file?

####

Thanks for any [pointers,

Rainer


--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys. (Germany)

University of Z?rich

Cell:       +41 (0)78 630 66 57
email:      Rainer at krugs.de
Skype:      RMkrug

PGP: 0x0F52F982

-- 
Johannes Ranke
Wissenschaftlicher Berater
https://jrwb.de/contact