Hi,
Yllka> Interesting topic! If possible, don't forget to show us your final
results!
Thomas> Thanx, very interesting tip! Should try it asap!
(On your example, beware on the UNIQUE typo ; )
With a Shapefile, using an index file (QIX) speeds up data visualisation
for sure.
Tiling to speed up access to WMS layers, with TileCache or the Mapserver
Mapcache.
Put the generated/temp files from Mapserver on a RAM disk (IMAGEPATH
parameter of the mapfile).
Chris
On Mon, Feb 18, 2013 at 9:43 AM, Thomas RAFFIN <traf...@sirap.fr> wrote:
> Hi,
>
> I've made a hack in pmapper few years ago. This one allows you to
> specify 2 data sources for each layer:
> LAYER
> .....
> DATA "the_geom FROM your_heavy_view USING UNQIUE gid"
> METADATA
> PM_RESULT_DATASUBSTITION "the_geom FROM your_geo_table USING
> UNQIUE gid"
> ...
> END
> ...
> END
>
> For instance " your_heavy_view" is a view that join a geographical table
> ("your_geo_table") with many other tables. The attributes "the_geom" and
> "gid" have to be the same names and values in both table and view.
>
> The "DATA" value is the habitual one whereas "PM_RESULT_DATASUBSTITION"
> is used to draw / select / query graphically / etc... to speed up pmapper.
>
> Be careful : all attributes used for label, classitem, binding, etc..
> have to be in the main table.
>
> It has only been tested with postgreSQL/postigs but could works with
> other data types.
>
> Thomas
>
> Le 16/02/2013 18:35, yllka baci a écrit :
> > Hello Pmapper users....
> > I'm going to write a paper on techniques that speed up data visualisation
> > on Web GIS applications.
> > Can any one of you tell me the techniques that he (she) knows?
> >
> > ps: pmapper.net will be the main reference of this paper :) thank you
> very
> > much for the support.
>
> --
>
>
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