Hi Giuseppe,
Yes, a tileindex is exactly what you need here. It will improve
performance and significantly reduce your mapfile layers.
Try this:
ls map*-streets.shp > streets.in
tile4ms streets.in streets-idx
shptree streets-idx
and in your mapfile replace ALL you map*-streets layers with a single
Layer
name ...
tileindex "streets-idx"
# no data statement
....
end
Do the same for the other layers. So you have a tileindex for each
theme. And make sure all files have .qix spatial indexes for performance
for x in *.shp ; do shptree $x ; done
And enjoy :)
There is one caveat and that is the all map*-streets.shp files must have
the same attributes defined for a given tileindex and the attributes
must be in the same order within the files.
-SteveW
Giuseppe De Rossi wrote:
Hi,
I need some kind explanations about tile index technique. At the moment I
have about 750 layers as shp file. they are organized as:
map1-streets.shp
map1-rivers.shp
map1-particels.shp
...
map1-referencedPointsN.shp
...
...
mapN-streets.shp
mapN-rivers.shp
...
mapN-referencedPointsN.shp
Some are polygons type, some are lines and some are text and points.
The user can visualize one layer and turn it on or off by using both the
location : map1-particels and the theme: particel-map1. The real number of
differen theme-layer is
I've two oreder of problems , the maximum number of layers and the
performance.
could be the first problem resolved by tile index tecnique ? can I improve
the perfomance too without recompiling mapserve ?
can I apply this tech into my problem ? what are the single steps of
procedure ?
I appraciete any info and suggestion.
thanks in advance and best regards
Giu.
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