[Mapserver-users] setExpression difficulty

[Lowell Filak]

Have you already tried '$tempClass->setExpression("\"$key\"");' ?
Lowell

The following message was sent by Nick Petersen-Bergeron
<bergeron at zedxinc.com> on Tue, 14 Oct 2003 14:16:06 -0400.

> 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
> 
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