[GRASS-user] the performance of displaying vector attributes
jarekj at amu.edu.pl
Sat Nov 11 07:12:14 EST 2006
Zbigniew Perski napisał(a):
> I am facing now with following problem:
> I have a large databases of points (more 30 000). I would like to
> visualize them in colors according to different attributes using
> d.vect.thematc and also store rgb information in the GRASSRGB column. I
> noticed that both methods are incredibly slow. It is very frustrating
> since you have to zoom and wait ages for refreshing the monitor. My
> database is stored using db engine. I would like to ask you if storing
> the point database using different engine like postgresql or mysql will
> have any impact on the performance in displaying the GRASSRGB column?
> I did not tested it yet but I am would like to know if it have any sense
> to spent some time on such try?
> Is there any other methods to speed-up the display performance in my
> case? I would like to add that I checked point displaying on various
> hardware combinations and I did not noticed any significant difference.
> It is always very slow.
> Thanks a lot
> grassuser mailing list
> grassuser at grass.itc.it
PgSQL with indexing will increase preformance. unfortunatly I can't say
anything about MySQL ....
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