[GRASS5] d.info: flag added for approximate screen scale
neteler at itc.it
Thu Jan 5 07:06:49 EST 2006
I have added a new flag to d.info to print the
approximate map scale in GRASS monitor. I know that
it's not very precise, but an approximate figure
is better than nothing:
Approximate map scale in GRASS monitor <x0> 1:11000
I remember that this was removed in GRASS 5 (not by me)
but IMHO a GIS should be able to give such information.
The algorithm takes the monitor size, the map size within
the monitor and the screen resolution (x DPI and y DPI)
into account. The latter may not be precise, depending on
the X server software, video card or monitor. The
figure is therefore given rounded.
It still needs to be make optional in the Makefile
in case of X absences. Hints for a test are welcome.
I hope the flag survives this time :-)
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