[GRASS-user] the performance of displaying vector attributes

[Dylan Beaudette]

Hi,

When storing attribute data in MySQL I have found creating an index on
relevant columns had made a large difference.

Cheers,

Dylan

On 11/10/06, Zbigniew Perski <perski at us.edu.pl> wrote:
> Hi,
>
> 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
>
>
> Zbigniew
>
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