Armin

It is only a 50mb GeoTIFF of bathmetry for the UK continental shelf with 12
classes.  It takes about 8 seconds to draw, I wasn't sure about using a
tileindex (my old app didn't), but will start using one.  I also have a
slight mix in projections WGS 84 UTM zone 31N and UTM zone 30N, which I
think may slow things down too.

Chris

On 2 September 2010 20:13, Armin Burger <armin.bur...@gmx.net> wrote:

> On 02/09/2010 13:53, Chris Jackson wrote:
> > Hi
> >
> > I have certain base layers that I always want to be on and then the user
> > superimposes other datasets.  At present I can get the layers to show by
> > using status=on in the map file and adding the layer to the all and
> default
> > groups tag in the config xml (so they load but do not appear in the TOC
> > list).  However I want some of these layers to appear in the legend too -
> > any clues?  Do they have to be in the TOC for the legend to display? If
> so
> > is there a way to disable the tickbox for specific layers (without using
> the
> > mutualDisableList) so they are permanently on.
>
> not possible without changing the core code. You could do it on the PHP
> side in toc.php or probably also in Javascript in pm.toc.js, but you
> will need some deeper code analysis.
>
> >
> > Also is it possible to load a pre-coloured raster geoTiff and load in an
> > associated pre-prepared legend image to match in the legend pane (I can
> get
> > uncoloured version of the geoTIFF to load and colour up based on map
> > classes, which builds the legend fine, but is too slow loading for a
> > baselayer).
> >
>
> in order to get a legend you need to define classes for a layer. How
> else should the application know which icons to add to the legend? But
> you could somehow tweak the legend creation in PHP if you really want.
>
> I'm just wondering about your problem with speed. If you do not have
> 100's of classes for the layer (which would not really make sense IMO),
> speed should not be an issue. At least I never had problems with a 4GB
> Tiff file for Corine landcover with 30 or so classes, given the Tiff
> file had been prepared with overviews etc.
>
> armin
>
>
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