[GRASS-dev] Re: gis.m: how to create high-resolution graphics file ?

[David Finlayson]

I would add that the GIMP has tools to oversample images (to increase
resolution). This way has the advantage that the map decorations scale
with the background. The usual problems with increasing the resolution
of a bitmap apply.

On 5/24/06, Hamish <hamish_nospam at yahoo.com> wrote:
> > > Correct me if I'm wrong but isn't that the function of the res
> > > parameter? I think res=4 outputs a png at 4 times the current
> > > display size.
>
> also d.out.file or just the PNG driver with GRASS_WIDTH and GRASS_HEIGHT
> set to the desired size.
>
> > With res= >1 though, the rescaling of the map decorations and text is
> > strange.
>
> Grid lines, etc, will still only be drawn 1 pixel wide, so on resize
> they tend to disappear.
>
>
> > > > > I am trying to export a high resolution jpeg or ppm from the map
> > > > > display, but I just can't seem to find a way to do this. All I
> > > > > get are fairly low resolution files. Have I missed something ?
> > > > > How can I configure this (beyong chosing jpeg quality) ?
> > > > >
> > > > > The same goes for printing to eps or pdf.
>
> If you want good looking poster size graphics [with decorations] you
> need to use ps.map. It's a little to learn but it can make Very nice
> results.
>
> FWIW, for work I do a lot of map output and use d.* for presentaion &
> web graphics, and ps.map for printed reports and journal figures. GMT
> might be better for journal figures but I haven't spent the time on
> getting good with it.
>
>
>
> Hamish
>


-- 
David Finlayson