[Mapserver-users] setExpression difficulty

[Nick Petersen-Bergeron]

I'm trying to dynamically create classes in a layer using Perl mapscript 3.6.

Here's my code:

foreach $key (sort keys %colors) {
                 my $tempClass = new classObj($soilLayer);
                 $tempClass->setExpression("$key");
                 $tempClass->{name} = $key;
                 $tempClass->{size}=5;
                 my $r = $colors{$key}{'R'};my $g = $colors{$key}{'G'};my 
$b = $colors{$key}{'B'};

                 my $rgb = 0;
                 foreach $clr ($r,$g,$b) {
                         $rgb <<=8;
                         $rgb += $clr;
                 }
                 warn "$rgb\n";
                 $tempClass->{color} = $rgb;
         }

$key is essentially the datum that I am looking to assign the different 
shapes to different classes by.  It is set up as the classitem in the 
layer.  Now, the problem is that when I try and use setExpression, I get 
the following error:

getSymbol(): Symbol definition error. (083028):(237)

The first number(083028) is the piece of datum I'm passing in, $key.  The 
second is the last non-end line of the mapfile.  Any ideas?





Nick Petersen-Bergeron
System Administrator

ZedX Inc.
369 Rolling Ridge Drive
Bellefonte, PA. 16823