[OpenLayers-Users] OpenLayers importing several GML files from different sources

Mon Nov 14 02:44:38 EST 2011

Hi list,

I'm trying to develope a GML file uploader which is supposed to upload different GML files from different sources, I mean, several GML created from different GIS software.

So far I manage to get some QGIS-created GML files into OpenLayers. But when I was trying to do the same with gvSIG, I couldn't get any geometry. The parsing process doesn't throw any error message. In fact, it seems that it reads the GML because while debugging with Firebug I can see that, although the geometry attribute is null, it has read the GML attributes, and they have values. It also has read the fid field correctly. I use this code.

	var theParser = new OpenLayers.Format.GML();
	theParser.internalProjection = null;
	theParser.externalProjection = null;
	theParser.extractStyles = false;
	theParser.extractAttributes = true;
	var features = theParser.read(req);

XML that works fine

<?xml version="1.0" encoding="utf-8" ?>
<ogr:FeatureCollection
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://ogr.maptools.org/ prueba.xsd"
     xmlns:ogr="http://ogr.maptools.org/"
     xmlns:gml="http://www.opengis.net/gml">
  <gml:boundedBy>
    <gml:Box>
      <gml:coord><gml:X>509296.3493197768</gml:X><gml:Y>4754836.958233111</gml:Y></gml:coord>
      <gml:coord><gml:X>518092.0880311229</gml:X><gml:Y>4763261.318750359</gml:Y></gml:coord>
    </gml:Box>
  </gml:boundedBy>                      
  <gml:featureMember>
    <ogr:prueba fid="F0">
      <ogr:geometryProperty>
	  <gml:Polygon>
	  <gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>510483.09779106994,4763261.3187503591 509759.18122358114,4762311.9199733241 509747.31373886816,4762264.4500344731 509759.18122358114,4761647.3408294003 509438.75913633197,4761599.8708905485 509296.34931977681,4762442.4623051668 510483.09779106994,4763261.3187503591</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
      <ogr:Campo1></ogr:Campo1>
      <ogr:Campo2></ogr:Campo2>
      <ogr:Campo3></ogr:Campo3>
      <ogr:Campo4></ogr:Campo4>
      <ogr:Campo5></ogr:Campo5>
      <ogr:Campo6></ogr:Campo6>
      <ogr:Campo7></ogr:Campo7>
    </ogr:prueba>
  </gml:featureMember>
  <gml:featureMember>
    <ogr:prueba fid="F1">
      <ogr:geometryProperty><gml:Polygon><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates>518092.08803112287,4754865.0112195052 518086.47743384406,4754858.1538228309 518068.39884261234,4754853.7900249474 518044.0862544041,4754850.0496267611 518014.16306891706,4754838.205032506 517987.35688191827,4754836.9582331106 517984.86328312766,4754859.4006222263 517999.20147617353,4754869.3750173887 518023.51406438177,4754878.726012853 518049.69685168291,4754883.0898107365 518072.76264049584,4754874.3622149695 518092.08803112287,4754865.0112195052</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></ogr:geometryProperty>
      <ogr:Campo1></ogr:Campo1>
      <ogr:Campo2></ogr:Campo2>
      <ogr:Campo3></ogr:Campo3>
      <ogr:Campo4></ogr:Campo4>
      <ogr:Campo5></ogr:Campo5>
      <ogr:Campo6></ogr:Campo6>
      <ogr:Campo7></ogr:Campo7>
    </ogr:prueba>
  </gml:featureMember>
</ogr:FeatureCollection>

XMl that doesn't load the geometry

<?xml version="1.0" encoding="UTF-8"?>
<gml:FeatureCollection  
xmlns:cit="http://www.gvsig.org/cit"  
xmlns:gml="http://www.opengis.net/gml" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.gvsig.org/cit cit.xsd">
	<gml:name>gestfore.shp</gml:name>
	<gml:boundedBy>
		<gml:Box srsName="http://www.opengis.net/gml/srs/epsg.xml#23030">
			<gml:coord><gml:X>509296.3493197768</gml:X><gml:Y>4754836.958233111</gml:Y><gml:Z>4754836.958233111</gml:Z></gml:coord>
			<gml:coord><gml:X>518092.08803112287</gml:X><gml:Y>4763261.318750359</gml:Y><gml:Z>4763261.318750359</gml:Z></gml:coord>
		</gml:Box>
	</gml:boundedBy>
	<gml:featureMember>
		<cit:FEATURE fid="2">
			<gml:Surface srsName="http://www.opengis.net/gml/srs/epsg.xml#23030">
				<gml:exterior>
					<gml:LinearRing>
					<gml:coordinates>510612.9302840919,4758505.035971242,0 510719.9951351402,4758592.026162719,0 510914.05017766514,4758672.324801005,0 511181.71230528585,4758779.389652054,0 511282.08560314355,4758632.175481862,0 511215.1700712384,4758458.195098909,0 511027.80658190395,4758190.532971288,0 510980.96570957033,4758183.841418098,0 510766.8360074738,4758357.821801051,0 510612.9302840919,4758505.035971242,0 510612.9302840919,4758505.035971242,0</gml:coordinates>
					</gml:LinearRing>
				</gml:exterior>
			</gml:Surface>
			<cit:Campo1>1</cit:Campo1>
			<cit:Campo2></cit:Campo2>
			<cit:Campo3></cit:Campo3>
			<cit:Campo4></cit:Campo4>
			<cit:Campo5></cit:Campo5>
			<cit:Campo6></cit:Campo6>
			<cit:Campo7></cit:Campo7>
		</cit:FEATURE>
	</gml:featureMember>
</gml:FeatureCollection>

I've tried configuring many of the parser's optiones but without success. I know I'm close to the solution, but I'm really stucked.

Does anybody know what could be happening??

Thanks in advance.

Un saludo,

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David Alda Fernández de Lezea
Lurralde eta Biodibertsitate Saila / Dpto. de Territorio y Biodiversidad

IKT
Granja Modelo s/n · 01192 · Arkaute (Araba)

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