[Mapserver-users] premature end of script headers (php)

[Dave McIlhagga]

 From our past experience in doing this kind of thing, A ramp of colours 
of 50 is plenty.  Not to mention, the more classes you have - the more 
processing and slow your application will end up being.

Why not try with say 40, then 50.  If you notice the difference being 
marginal - then chances are going up to 100 will make minimal difference 
if any.  OTOH - if there's a big difference, it might be worth taking 
your option a)

Dave


Charlton Purvis wrote:
> Thanks for the map.h MS_MAXCLASSES pointer, folks, and thanks for the
> user thread pointers, too.  I don't know why I have such rotten luck
> finding information in the threads, but I do.
> 
> Anyway, I didn't see any clear answers to what a reasonable number of
> classes would be, though.  Should I look at it w/ this attitude:  (a)
> I've got 100 classes, so I need to up MapServer's anti and simply get
> the job done; OR (b) I need to revisit what I'm trying to render because
> 100 classes is unreasonable.
> 
> Thanks,
> 
> Charlton
> 
> -----Original Message-----
> From: Dylan Keon [mailto:keon at nacse.org] 
> Sent: Monday, February 10, 2003 5:31 PM
> To: Charlton Purvis
> Cc: mapserver-users at lists.gis.umn.edu
> Subject: Re: [Mapserver-users] premature end of script headers (php)
> 
>  > I have about 120 classes I need defined in my .map file so that they
>  > can appear as different colors (different elevations).  Well, all is
>  > well if I display something like 50 of those classes.  But when I try
>  > to display the 51^st , all goes to pot, and I get an internal server
>  > error.  I've made sure that my classes are intact and syntactically
>  > correct.  As long as I don't go above the total of 50 classes, I'm
>  > fine.
> 
> If you are able to recompile MapServer you can edit map.h and increase 
> MS_MAXCLASSES (default is 50).  As long as you compile with a value 
> greater than the max number of classes you need to use, you won't 
> receive the error you described.  There were some posts about this 
> recently, and about how many classes are reasonable:
> http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0301/threads.ht
> ml#00609
> 
> --Dylan
> 
>