Maximum number of class styles, 5, has been reached

[Steve Lime]

Um, er... It was a relatively arbitrary decision. By that I mean I didn't have any symbolization use cases that
required more than 3, let alone 5. So to bump it you'd have to recompile. There should be virtually no penalty
for going to a value of say 10.

That said, you are only describing a case with 3 styles. If that's the case then the issue is why are you hitting
the limit at all? (and the limit of 5 is protecting you). Are you actually creating classes with more than 5?

Steve

>>> Ludwig Max Brinckmann <ludwigbrinckmann at GMAIL.COM> 7/13/2006 10:53:12 AM >>>
I am using Mapserver through Primagis, which uses mapserver as rendering
engine.

I have a road network which I want to display at varying zoom levels in
different ways, with the roads rendered by stacking styles on top of each
other: eg. a wide black line on top of which comes a narrower yellow line on
top of which comes a narrow black line, which overall gives the impression
of a divided highway as we know it from paper maps.

I do this at varying zoom levels, but then when rendering I get the message

MapServerChildError: insertStyle(): Child array error. Maximum number of
class styles, 5, has been reached

which comes from classobject.c.

Obviously, I can change this in map.h and recompile.

But is there a good reason for such a low maximum? Is it there to protect
people from their own errors or is there a significant performance penalty
or some such?


Ludwig