[GRASS-user] ps.map Advice

Vincent Bain bain at toraval.fr
Tue Jan 5 10:54:44 EST 2010

If you really need to have full control on your "virtual printer"
output, have a look at gs arguments :

> you might calculate what resolution gives you 300dpi by measuring the
> width of the printed map box in inches and multiplying by the desired
> dpi. any thing more than that is wasted disk space,

> Hamish

Well, in the context of high quality press output it's a bit more
delicate ; depends on what image you produce (b&w, grayscale, color),
what printing device it is (inkjet printer, laser printer, offset
press... each having different lineature values and different frame
types), and paper quality.
Then, as you say, 300 dpi :
* is most often enough for common color map printing
* should be increased to 600 dpi for b&w images e.g. text+thin black
contour lines on a white bg to be sent on a laser printer,
andbut should be considered the least acceptable resolution for high
quality paper production.
I agree that it's useless beyond 600 dpi.



More information about the grass-user mailing list