[Mapserver-users] Layer Problem

[Paul Spencer]

no idea.  theoretically, this value causes mapserver to pre-allocate 
sufficient storage for the defined number of layers.  Changing this 
number should change the memory footprint of the executable.  I am 
guessing that the actual data structures are not that large, so you 
should be able to create thousands of layers if you need to, but it will 
depend on how much memory you have available for a given process.  I'm 
not sure, but there may be a memory limit imposed by Apache on cgis?

I'd suggest that you rebuild with the number you have in mind plus a 
decent buffer and try it :)

Cheers,

Paul

James Anderson wrote:

> Thanks very much.  How high do u think I can take it ?
> 
> Regards,
> 
> James.
> 
> ----- Original Message -----
> From: "Paul Spencer" <pagameba at magma.ca>
> To: "James Anderson" <james at danisat.net>
> Cc: <mapserver-users at lists.gis.umn.edu>
> Sent: Thursday, July 03, 2003 1:36 PM
> Subject: Re: [Mapserver-users] Layer Problem
> 
> 
> | edit this line in map.h and rebuild mapserver.
> |
> | #define MS_MAXLAYERS 100 /* maximum number of layers in a map file */
> |
> | Cheers,
> |
> | Paul
> |
> | James Anderson wrote:
> |
> | >
> | > Hi Everybody,
> | >
> | > I seem to have a big problem ......
> | > I am using mapserver on Red Hat 8 Linux.
> | > MapServer version 3.6.3 OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP SUPPORTS=PROJ
> | > SUPPORTS=TTF SUPPORTS=WMS_SERVER INPUT=TIFF INPUT=EPPL7 INPUT=JPEG
> | > INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
> | > I have many vector layers and some raster layers too.  At the moment my
> | > map file has over 100 layers in it.  My problem is that when I have
> | > tried adding some more layers, I get the error
> | >
> | > msLoadMap(): Unknown identifier. Too many layers defined.
> | >
> | > Now this is a problem as I need to have all these layers.  I got so many
> | > layers that its too many to count the exact amount.  But this is a
> | > problem, and my project is going to fail if I cannot find a way to get
> | > mapserver to support/accept more layers.   Can anyone give me an idea of
> | > what the maximum number of layers is, and how I can go about increasing
> | > the amount of layers that is supported.  I have an idea that I am going
> | > to have to recompile the mapserver.   Please anybody, Please Help !!
> | >
> | > Thanks,
> | >
> | > James.
> | >
> |
> | --
> | Paul Spencer
> | Applications and Software Development
> | DM Solutions Group Inc.
> | http://www.dmsolutions.ca
> |
> 
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-- 
Paul Spencer
Applications and Software Development
DM Solutions Group Inc.
http://www.dmsolutions.ca