[mapserver-users] PHP MapScript: shape->classindex is always 0

[Peter Hopfgartner]

Hi Josh,

this is funny! I've hit this bug while working on a KML export, too. 
I've extracted a minimal test and it is attached to 
http://trac.osgeo.org/mapserver/ticket/3406.

Regards,

Peter

Josh Hevenor wrote:
> I think I came across the same thing, or something related, when I was
> trying to generate KML using mapserver templates.   I know I ended up
> recreating the class expression in my output instead of using the
> [shpclass] variable.  Let me know if a bug is filed and I'll work up an
> example to submit.  (mapserver 5.2)
>
> Josh
>
> Alan Boudreault wrote:
>   
>> Hi Peter,
>>
>> If you are sure that the shape use the different classes you specified in the 
>> mapfile (you probably see it in your map image), so I guess it could be a bug. 
>> Please fill a ticket with a test case. Assign it to "aboudreault". 
>>
>> regards,
>> Alan
>>
>> On March 24, 2010 06:38:49 am Peter Hopfgartner wrote:
>>   
>>     
>>> Hello
>>>
>>> As I interpreted this, classindex should point to the right class of the
>>> instantiated shape. Unfortunatly, classindex is always 0.
>>>
>>> As a test I have a LAYER with 2 classes,
>>>     CLASS
>>>        NAME 'class1'
>>>        EXPRESSION (([class] eq 1))
>>>        STYLE
>>>          SYMBOL "circle"
>>>          SIZE 7.0
>>>          OUTLINECOLOR 0 0 0
>>>          COLOR 0 128 0
>>>        END
>>>     END
>>>     CLASS
>>>        NAME 'class2'
>>>        EXPRESSION (([class] eq 2))
>>>        STYLE
>>>          SYMBOL "circle"
>>>          SIZE 7.0
>>>          OUTLINECOLOR 0 0 0
>>>          COLOR 0 0 128
>>>        END
>>>     END
>>>
>>> In the PostGIS database are 4 point, 2 with class=1 and 2 with class=2,
>>> the generated map image shows the expected colors.
>>>
>>> The following script:
>>>
>>> <?php
>>> $mapfile = 'test.map';
>>> $map = ms_newmapobj($mapfile);
>>> $layer = $map->getLayerByName('test');
>>> $status = $layer->open();
>>> $status = $layer->whichShapes($map->extent);
>>> while ($shape = $layer->nextShape())
>>> {
>>>    echo "index: {$shape->index}\tclassindex: {$shape->classindex}\n";
>>> }
>>> $layer->close();
>>> ?>
>>>
>>> the following output:
>>>
>>> index: 0    classindex: 0
>>> index: 1    classindex: 0
>>> index: 2    classindex: 0
>>> index: 3    classindex: 0
>>>
>>> which is not what I expected.
>>>
>>> Am I missing something obvious or is this a MapServer bug?
>>>
>>> Regards,
>>>
>>> Peter
>>>
>>>     
>>>       
>>   
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-- 
 
Dott. Peter Hopfgartner
 
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