[mapserver-users] Display performance

[Chris Jackson]

Ok Folks

I am now ready to go home and have a sit down!!
I have re-classified the layer with a new class column and then ordered the
shapefile by the most common classes.....

the results are in......

<3.5 secs for the entire layer to draw!! (only a saving of 21secs +) - the
main saving was by just reclassifying.

Thanks to all as this has been a great learning experience, I am now going
to see if I can find a bigger model grid to play with.....!   ;o)

Chris

On 3 September 2010 11:07, thomas bonfort <thomas.bonfort at gmail.com> wrote:

> That would be the fastest yes. Even more so if you order the classes
> inside your layer by order of occurences, i.e. the most common classes
> first, and the least common ones last.
>
> --
> thomas
>
> On Fri, Sep 3, 2010 at 11:54, Chris Jackson <webturtles at gmail.com> wrote:
> > Jukka
> >
> > Thank you for the code I will give it a go.  I guess I will dust off the
> > field calculator in ArcMap and see if that improves things somewhat, I
> guess
> > that is a similar overhead when classifying a raster by pixel value (not
> > sure how to fix that).  So if I understand you right then I would just
> use a
> > number per class (1-15 say) in the new attribute field and then code
> > something like:
> >
> >  CLASSITEM "MEAN_SP_PC"
> >   CLASS
> >     EXPRESSION "1"
> >     NAME "> 4.00 (m/s)"
> >     STYLE
> >       COLOR 135 99 64
> >     END
> >   END
> >
> > Thanks again for the insight.
> > Chris
> >
> >
> > _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >
> >
>
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