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    Hi Andrea,<br>
    <br>
    The VRT is an XML format and hence you need to ensure the content is
    XML compliant: your URL contained `&` characters that need to be
    escaped to `&amp;`.  The following VRT works for me:<br>
    <br>
    <OGRVRTDataSource><br>
      <OGRVRTLayer name="OGRGeoJSON"><br>
       
<SrcDataSource><a class="moz-txt-link-freetext" href="http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&amp;outfields=*&amp;f=json">http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&amp;outfields=*&amp;f=json</a></SrcDataSource><br>
        <LayerSRS>EPSG:3004</LayerSRS><br>
        <SrcLayer>OGRGeoJSON</SrcLayer><br>
      </OGRVRTLayer><br>
    </OGRVRTDataSource><br>
    <br>
    Best regards,<br>
    <br>
    Homme<br>
    <br>
    On 19/11/14 13:22, aborruso wrote:<br>
    <span style="white-space: pre;">> Hi Even,<br>
      > thank you.<br>
      ><br>
      ><br>
      > Even Rouault-2 wrote<br>
      >> Yes, you can use the URL as the datasource name expected
      by the VRT<br>
      >> format.<br>
      ><br>
      > I have tried with:<br>
      > <OGRVRTDataSource><br>
      >     <OGRVRTLayer name="OGRGeoJSON"><br>
      >     <br>
      >
<SrcDataSource><a class="moz-txt-link-freetext" href="http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json">http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json</a></SrcDataSource><br>
      >         <LayerSRS>EPSG:3004</LayerSRS><br>
      >         <SrcLayer>OGRGeoJSON</SrcLayer> <br>
      >     </OGRVRTLayer><br>
      > </OGRVRTDataSource><br>
      ><br>
      > But if I run "ogrinfo -ro my_virtual_format_file.vrt" I have:<br>
      > INFO: Open of `my_virtual_format_file.vrt'<br>
      >       using driver `VRT' successful.<br>
      > 1: OGRGeoJSONERROR 4: Failed to read GeoJSON data<br>
      ><br>
      > If I run:<br>
      > ogrinfo -ro <br>
      >
<a class="moz-txt-link-rfc2396E" href="http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json">"http://www.provincia.caltanissetta.sitr.it/ArcGIS/rest/services/Immobili/MapServer/0/query?where=objectid+%3D+objectid&outfields=*&f=json"</a><br>
      > OGRGeoJSON -summary<br>
      ><br>
      > It's all OK.<br>
      ><br>
      > What's wrong in my VRT definition?<br>
      ><br>
      > Thank you again,<br>
      ><br>
      > a<br>
      ><br>
      ><br>
      ><br>
      ><br>
      > --<br>
      > View this message in context:
<a class="moz-txt-link-freetext" href="http://osgeo-org.1560.x6.nabble.com/Define-Virtual-Format-for-a-remote-GeoJSON-file-tp5173766p5173799.html">http://osgeo-org.1560.x6.nabble.com/Define-Virtual-Format-for-a-remote-GeoJSON-file-tp5173766p5173799.html</a><br>
      > Sent from the GDAL - Dev mailing list archive at Nabble.com.<br>
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    <br>
    <br>
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