[R] Plot in real unit (1:1)

[Brandstätter Christian]

Thanks a lot!

Jim Lemon <drjimlemon using gmail.com> schrieb am Do., 7. Juni 2018, 06:13:

> Hi Christian,
> Well, it almost worked. I suspect that the postscript device adds some
> padding to account for the printable area, so with a bit of
> experimentation, The following example seems to do what you want. When
> I printed the resulting file from the GIMP, the box and diamond were
> the correct dimensions.
>
> postscript("test.ps",paper="a4",horizontal=FALSE)
> par(mai=c(1.713,0,1.713,0),xaxs="i",yaxs="i")
> plot(0,type="n",xlim=c(0,190),ylim=c(0,190),xlab="",axes=FALSE)
> segments(c(0,95),c(95,0),c(190,95),c(95,190))
> segments(c(45,95,145,95),c(95,145,95,45),
>  c(95,145,95,45),c(145,95,45,95))
> box()
> dev.off()
>
> Jim
>
> On Thu, Jun 7, 2018 at 8:16 AM, Jim Lemon <drjimlemon using gmail.com> wrote:
> > Hi Christian,
> > When I have to do something like this, I usually write it in
> > Postscript using this:
> >
> > /def mm 2.8346 mul
> >
> > that converts a dimension in mm to points (1/72 inch). However, this
> > won't work in R. It may be possible to set up the device like this:
> >
> > postscript("myfile.ps",paper="a4")
> > par(mar=c(0,0,0,0))
> > # generate a blank plot
> > plot(0,type="n",xlim=c(0,210),ylim=c(0,297),axes=FALSE)
> > # display lines, etc. in mm with 0,0 at the bottom left
> > dev.off()
> >
> > The resulting file should be printable. Warning, I don't have time to
> > test this right now.
> >
> > Jim
> >
> >
> >
> > On Thu, Jun 7, 2018 at 12:00 AM, Christian Brandstätter
> > <bran.chri using gmail.com> wrote:
> >> Dear List,
> >>
> >> Is it possible to plot in R in "real" units? I would like to draw a
> >> plot on A4 paper, where 1 plot unit would be a mm in reality. Is
> >> something like that possible? I would also like to be able to scale the
> >> plot in x and y direction.
> >> Background: For a project I would have to draw around 65 fast sketches
> >> of elevation courves.
> >>
> >> Copied from here, due to no answer: https://stackoverflow.com/questions
> >> /50606797/plot-in-real-units-mm
> >>
> >> Thank you!
> >>
> >> ______________________________________________
> >> R-help using 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.
>

	[[alternative HTML version deleted]]