[GRASSLIST:5081] Re: ps.map and PNG driver comparison

Hamish hamish_nospam at yahoo.com
Tue Dec 7 20:03:44 EST 2004


> > The number of cells used by the PNG driver will be
> > resampled to fit in
> > the monitor height and width, after the region
> > resolution resampling.
> 
> I set the environment variables GRASS_WIDTH and
> GRASS_HEIGHT to match the g.region -p output, so the
> PNG file should have exactly the same number of rows
> and columns as ps.map output. But even printed to
> paper (same size) the maps in detail look different.
> The postscript file looks more "edgy" while the png
> file looks smoother. I tried to print some
> topographical maps with generaly rasterized line data.


what program are you using to print out the PNG file? It is likely that
is doing some smoothing (GIMP print filters, etc.) ?

Is it better detail or just soothness?


Hamish




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