look at the mapserver utilities:
shptree myshapefile
This creates a spatial index (*.qix) and you should create one for every
shapefile you are using.
On Linux this will do the trick:
find /path/data -name \*.shp -exec shptree {} \;
If the .qix file is missing on every draw mapserver must create one on
the fly in memory and the it throws it away.
-Steve W
On 5/11/2011 11:47 AM, Jon-Paul Dobson wrote:
Hi Jukka,
Thanks for getting back to me so quickly. No I haven't tried this. How
is this done and what is the benefit? Aren't Shape files already indexed?
Regards,
Jon-Paul.
On Wed, May 11, 2011 at 4:41 PM, Rahkonen Jukka
<[email protected] <mailto:[email protected]>> wrote:
Hi,
No answers but a question back. Have you created spatial index
(.qix) for your shapefiles with shptree?
-Jukka Rahkonen-
Jon-Paul Dobson wrote:
> Hi,
> Whenever I display a layer based on a Shape file I notice that
the Shape
file is accessed constantly. This makes rendering extremely slow when
compared to, for example, ESRI ArcIMS which appears to cache the
Shape file.
Is there an equivalent caching mechanism for Map Server? ArcIMS seems to
render an order of magnitude faster when the number of symbols runs
into the
1000s
> Similarly, whenever I display layer symbols using a truetype font
I notice
that the .ttf file is accessed for every symbol. This makes rendering
appallingly slow. Is there also any caching mechanism to prevent this?
> Any insight anyone can give would be much appreciated.
Best regards,
Jon-Paul.
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