Hi I have a package, which plots from the plantuml syntax (https://plantuml.com) graphs via a knitr engine, into a file, or into a graphics device (https://github.com/rkrug/plantuml). I am using at the moment grImport for the eps import, but would like to cut down on dependencies. Is there a way of bringing graphics files (png, sag, eps, ?) into a graphics device in R? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
Load svg, eps or png into graphics device?
5 messages · Abby Spurdle, Paul Murrell, Rainer M Krug
If I understand your question correctly, you're already able to read an EPS file. So, essentially, you have an answer to your question. Paul Murrell published an article on using raster graphics, in 2011. https://journal.r-project.org/archive/2011-1/RJournal_2011-1_Murrell.pdf I would assume there's been progress since then. But I don't see the point here. Writing what would otherwise be vector graphics to a raster-based image file, and then reading it back into a vector graphics system, would create unnecessary problems.
On Sat, Jun 20, 2020 at 2:56 AM Rainer M Krug <Rainer at krugs.de> wrote:
Hi I have a package, which plots from the plantuml syntax (https://plantuml.com) graphs via a knitr engine, into a file, or into a graphics device (https://github.com/rkrug/plantuml). I am using at the moment grImport for the eps import, but would like to cut down on dependencies. Is there a way of bringing graphics files (png, sag, eps, ?) into a graphics device in R? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
1 day later
Hi Do you mean you want to reduce *system requirements* ? I'm not sure you have many options. Looking at the plantuml output format options, there is ... png via 'png', which requires libpng svg via 'grImport2', which requires 'rsvg', which requires librsvg2 eps via 'grImport', which requires ghostscript ... and a number of other formats that cannot be read directly into R AFAIK. The only option that does not require dependencies looks like the "txt" format, which you could read in with readLines(), but I'm not sure you want an ASCII art version :) Paul
On 20/06/20 2:56 am, Rainer M Krug wrote:
Hi I have a package, which plots from the plantuml syntax (https://plantuml.com) graphs via a knitr engine, into a file, or into a graphics device (https://github.com/rkrug/plantuml). I am using at the moment grImport for the eps import, but would like to cut down on dependencies. Is there a way of bringing graphics files (png, sag, eps, ?) into a graphics device in R? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 paul at stat.auckland.ac.nz http://www.stat.auckland.ac.nz/~paul/
On 21 Jun 2020, at 22:42, Paul Murrell <paul at stat.auckland.ac.nz> wrote: Hi Do you mean you want to reduce *system requirements* ?
system requirements and package dependencies. Yes.
I'm not sure you have many options.
That was my impression as well, and that is why I asked here - possibly somebody has any smart idea.
Looking at the plantuml output format options, there is ... png via 'png', which requires libpng
Yup.
svg via 'grImport2', which requires 'rsvg', which requires librsvg2
Tried it, but did not work as well as
eps via 'grImport', which requires ghostscript
Which I am using for the vector graph.
... and a number of other formats that cannot be read directly into R AFAIK. The only option that does not require dependencies looks like the "txt" format, which you could read in with readLines(), but I'm not sure you want an ASCII art version :)
Actually, it could actually be an option if none of the above is installed. Kind of cascading, depending if installed: eps - sag - png - ASCII art. Thanks, Rainer
Paul On 20/06/20 2:56 am, Rainer M Krug wrote:
Hi I have a package, which plots from the plantuml syntax (https://plantuml.com) graphs via a knitr engine, into a file, or into a graphics device (https://github.com/rkrug/plantuml). I am using at the moment grImport for the eps import, but would like to cut down on dependencies. Is there a way of bringing graphics files (png, sag, eps, ?) into a graphics device in R? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
-- Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 paul at stat.auckland.ac.nz http://www.stat.auckland.ac.nz/~paul/
-- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
On 20 Jun 2020, at 01:30, Abby Spurdle <spurdle.a at gmail.com> wrote: If I understand your question correctly, you're already able to read an EPS file. So, essentially, you have an answer to your question.
Well - there are some dependencies (system as well as package dependencies) which I would like to cut down - that is why I am asking.
Paul Murrell published an article on using raster graphics, in 2011. https://journal.r-project.org/archive/2011-1/RJournal_2011-1_Murrell.pdf I would assume there's been progress since then. But I don't see the point here.
Depending on the use, it might be better to have a raster or a vector representation. But I agree - in general, is vector better.
Writing what would otherwise be vector graphics to a raster-based
No - plantuml can also produce png graphs - these are the ones I am using for the raster representation.
image file, and then reading it back into a vector graphics system, would create unnecessary problems.
That one is true. Thanks, Rainer
On Sat, Jun 20, 2020 at 2:56 AM Rainer M Krug <Rainer at krugs.de> wrote:
Hi I have a package, which plots from the plantuml syntax (https://plantuml.com) graphs via a knitr engine, into a file, or into a graphics device (https://github.com/rkrug/plantuml). I am using at the moment grImport for the eps import, but would like to cut down on dependencies. Is there a way of bringing graphics files (png, sag, eps, ?) into a graphics device in R? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
-- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Z?rich Office Y34-J-74 Winterthurerstrasse 190 8075 Z?rich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: Rainer.Krug at uzh.ch Rainer at krugs.de Skype: RMkrug PGP: 0x0F52F982