[mapserver-users] Re: mapscript querybypoint on tiled rasterlayers?

[Steve Lime]

Thanks for the bug report. It may be that we missed a spot with the changes for relative
path support. The raster query stuff is off by itself so it's certainly possible.

Steve

>>> On 7/29/2008 at 8:23 PM, in message <488FC2A9.8030205 at alumni.uwaterloo.ca>,
Mike Leahy <mgleahy at alumni.uwaterloo.ca> wrote:
> Steve,
> 
> Thanks for the reply.  To clarify, I am using 5.2.  I'm guessing by what 
> you're saying is that bugs with a new feature like this are to be 
> expected - I just wanted to check if it was already known to anyone else 
> before submitting a ticket in the trac.
> 
> Regards,
> Mike
> 
> Steve Lime wrote:
>> Support for tile names relative to the tile index is brand new in 5.2 so in 
> older versions
>> absolute paths or paths relative to the mapfile were your only options.
>> 
>> Steve
>> 
>>>>> On 7/29/2008 at 12:44 PM, in message <488F56FC.9070701 at alumni.uwaterloo.ca>,
>> Mike Leahy <mgleahy at alumni.uwaterloo.ca> wrote:
>>> Ok...I figured out the problem pretty much right after I clicked send on 
>>> that last message.  I had generated my tile index.shp with relative 
>>> paths for the LOCATION field (i.e., relative to the shp file).  I just 
>>> regenerated it with absolute path names, and it the query function works 
>>> fine.
>>>
>>> So would this be a known bug of any sort, or is it just bad practice to 
>>> use relative filenames with MapServer?
>>>
>>> Regards,
>>> Mike
>>>
>>> Mike Leahy wrote:
>>>> Hello list,
>>>>
>>>> I'm sure this one has come up before, but I can't seem to figure out 
>>>> what I need to do.  I have some tiled raster layers that I've got in a 
>>>> mapfile that is being used for generating ka-map tiles.  I'm trying to 
>>>> query the values on these layer using the queryByPoint function in 
>>>> php_mapscript.  I have a generic identify function that returns results 
>>>> for any of my vector layers, and for non-tiled raster layers - just not 
>>>> for the tiled raster layers.  Is it possible to query tiled raster 
>>>> layers?  If so, can someone spot what I'm doing wrong below?
>>>>
>>>> The tiled-raster layers in the mapfile generally look like this:
>>>>
>>>>  LAYER
>>>>   NAME "Tiled Raster"
>>>>   GROUP "Tiled Raster"
>>>>   STATUS ON
>>>>   TYPE RASTER
>>>>   TILEINDEX "/data/index.shp"
>>>>   TILEITEM "LOCATION"
>>>>   METADATA
>>>>    "imageformat" "AGG_JPEG"
>>>>   END
>>>>   PROJECTION
>>>>    "init=epsg:4326"
>>>>   END
>>>>  END
>>>>
>>>>
>>>> And here is the function in PHP:
>>>>
>>>>
>>>>  public function Identify($oMap,$layer,$x,$y,$cellSize)
>>>>  {
>>>>   $oLayer = $oMap->getLayerByName($layer);
>>>>   if (in_array($oLayer->type,
>>>>    array(MS_LAYER_POINT,MS_LAYER_LINE,MS_LAYER_POLYGON)))
>>>>   {
>>>>    $oLayer->set("toleranceunits",$oMap->units);
>>>>    $oLayer->set("tolerance",$cellSize*3);
>>>>   }
>>>>   else
>>>>   {
>>>>    $oLayer->set("tolerance",0);
>>>>   }
>>>>
>>>>   $oLayer->set("template","dummy.html");
>>>>
>>>>   $oQPoint = ms_newPointObj();
>>>>   $oQPoint->setXY($x,$y);
>>>>
>>>>   $aResults = array();
>>>>
>>>>   if (@$oLayer->queryByPoint($oQPoint,MS_MULTIPLE,$oLayer->tolerance) == 
>>>> MS_SUCCESS)
>>>>   {
>>>>    $oLayer->open();
>>>>    $nResults = $oLayer->getNumResults();
>>>>
>>>>    for ($i=0;$i<$nResults;$i++)
>>>>    {
>>>>     $oResult = $oLayer->getResult($i);
>>>>     $oShape = $oLayer->getShape($oResult->tileindex,
>>>>      $oResult->shapeindex);
>>>>     $aResults[] = array($oResult,$oShape);
>>>>    }
>>>>   }
>>>>
>>>>   return $aResults;
>>>>  }
>>>>
>>>>
>>>> Thanks in advance for any help,
>>>> Mike
>>>>
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>> 
>> 
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