[Chameleon] Querying dynamic built layers

[Ken Sanderson]

Simple and true, totally forgot about the tolerance settings when I 
created the layer. Sorry folks for missing the obvious.

Still not working, getting an error "[MapServer Error]: 
msINLINELayerGetShape(): No inline feature with this index." in 
map_query.php, but I can work towards tracking that down now that its 
atleast responding.

Thanks,

Ken



David Dabney wrote:
> Could this be as simple as increasing the tolerance for that layer?
> Ken Sanderson wrote:
> 
>> Yes, here is the phpmapscript chunk of my script.
>>
>> Ken
>>
>>                 $poLayer = ms_newLayerObj($this->moMapSession->oMap);
>>                 $poLayer->set("name", "Your Point Summary");
>>                 $poLayer->set("status", MS_OFF);
>>                 $poLayer->set("type", MS_LAYER_POINT);
>>                 $poLayer->set("labelcache", MS_OFF);
>>                 $poLayer->set("labelmaxscale",30000.0);
>>                 $poLayer->set("labelminscale",1.0);
>>                 $poLayer->set("template","ttt_query.html");
>>                 $poClass = ms_newClassObj($poLayer);
>>                 $poClass->set("name", "dynamic point summary class");
>>                 $poClass->label->set("font","sans");
>>                 $poClass->label->set("type","truetype");
>>                 $poClass->label->set("size",7);
>>                 $poClass->label->set("position","auto");
>>                 $poClass->label->set("force","TRUE");
>>                 $poClass->label->color->setRGB(0,0,0);
>>                 $poClass->label->outlinecolor->setRGB(225,240,180);
>>                 $poClass->label->shadowcolor->setRGB(225,240,180);
>>                 $poClass->label->set("offsetx",1);
>>                 $poClass->label->set("offsety",1);
>>                 $poClass->label->set("buffer",10);
>>                 $poClass->set("template","ttt_query.html");
>>                 $poStyle = ms_newStyleObj($poClass);
>>                 $poStyle->set("symbolname","star");
>>                 $poStyle->set("size", 15);
>>                 $poStyle->color->setRGB(250, 160, 5);
>>                 $poStyle->outlinecolor->setRGB(0,0,0);
>>
>>                 //go through point array and use each item
>>                 for ($i=0;$i<count($pointsarray);$i++){
>>                   $pt = ms_newPointObj();
>>                   $ln = ms_newLineObj();
>>                   $shp = ms_newShapeObj(MS_SHAPE_POINT);
>>                   $pt->setXY($pointsarray[$i][2],$pointsarray[$i][3]);
>>                   $ln->add($pt);
>>                   $shp->add($ln);
>>                   $shp->set("text",$pointsarray[$i][1]);
>>                   $shp->set("index",$i);
>>                   $poLayer->addFeature($shp);
>>                 }
>>
>> Eric Bridger wrote:
>>
>>> Are you calling $layer->addFeature() as well?
>>>
>>>
>>> On Wed, 2005-03-16 at 14:40, Ken Sanderson wrote:
>>>
>>>> Thanks Eric for the reply.
>>>>
>>>> I am not sure I understand the issue with chameleon. I added the 
>>>> layer to the session map object so that it would remain between map 
>>>> draws, basically for the life of the session. How would this 
>>>> conflict with the query attempt?
>>>>
>>>> Basically I have done the equiv of the perl script you have linked, 
>>>> only I did it with PHP mapscript, now possible thanks to them making 
>>>> index a write-able property for php mapscript.
>>>>
>>>> So I have a layer loaded to the map, I have points being displayed, 
>>>> with  appropriate labels, I just cant use the query widget on that 
>>>> layer, or rather it always returns 0 records.
>>>>
>>>> Ken
>>>>
>>>> Eric Bridger wrote:
>>>>
>>>>> There is a work around that I have used for this type of thing using
>>>>> mapscript (Perl). I call $point->draw() and then create a single point
>>>>> line shape from that point (setting the $shape->index to my numeric 
>>>>> key
>>>>> value and call $layer-addFeature($shape).  This adds the point as a
>>>>> feature to the layer and it is queryable and should return the 
>>>>> index you
>>>>> used. There is a Perl example of this here:
>>>>> http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?PerlMapScriptExamples42ex1 
>>>>>
>>>>>
>>>>>
>>>>> BUT there is a problem with this approach when using Chameleon.  In
>>>>> Chameleon the map object is cached in your session and I've found that
>>>>> all features added to the map are retained between map draws.
>>>>>
>>>>> You might be able to get around this by calling $map->removeLayer() 
>>>>> but
>>>>> I have not tested this.
>>>>>
>>>>>
>>>>> On Wed, 2005-03-16 at 13:05, Ken Sanderson wrote:
>>>>>
>>>>>
>>>>>> Hello all.
>>>>>>
>>>>>> I have setup a script that queries a database and retrieves a 
>>>>>> bunch of points. I then create a layer object that I added to the 
>>>>>> map object for these points. Each of these points shows up on the 
>>>>>> map, each has a label, and I have used the new change to the index 
>>>>>> property to add an index value for each point, sequentially. All 
>>>>>> works, no errors.
>>>>>>
>>>>>> I 'thought' that I could just add the template value and then this 
>>>>>> layer would be queryable using the query tool. Obviously it will 
>>>>>> not return any data other than the shape_index and other inherient 
>>>>>> values, but for now thats all I wanted to check.
>>>>>>
>>>>>> However this is not the case. The query returns the layer in the 
>>>>>> list of layers that didnt return results, but never returns any 
>>>>>> values.
>>>>>>
>>>>>> Any ideas why this is?
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Chameleon mailing list
>>>>> Chameleon at lists.maptools.org
>>>>> http://lists.maptools.org/mailman/listinfo/chameleon
>>>>>
>>>>
>>>
>>>
>>> _______________________________________________
>>> Chameleon mailing list
>>> Chameleon at lists.maptools.org
>>> http://lists.maptools.org/mailman/listinfo/chameleon
>>>
>>
>> _______________________________________________
>> Chameleon mailing list
>> Chameleon at lists.maptools.org
>> http://lists.maptools.org/mailman/listinfo/chameleon
>>
>