[gdal-dev] OGC services requests in VRT?

[Ethan Alpert]

Interesting thanks! I always for get to try just convering to VRT and seeing what GDAL does.

-e

-----Original Message-----
From: Paolo Corti [mailto:pcorti at gmail.com] 
Sent: Thursday, May 10, 2012 7:00 AM
To: Ethan Alpert
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] OGC services requests in VRT?

On Thu, May 10, 2012 at 2:57 PM, Paolo Corti <pcorti at gmail.com> wrote:
> On Thu, May 10, 2012 at 12:49 AM, Ethan Alpert <ealpert at digitalglobe.com> wrote:
>> Is it possible to use an OGC call in a VRTRasterBand?
>>
>
> I guess you mean a WCS, and I think it is possible, just put the xml 
> file in SourceFilename under VRTRasterBand.
>
> Very quick sample, create a test.xml file like this:
>
> <WCS_GDAL>
>  <ServiceURL>http://nsidc.org/cgi-bin/atlas_south?</ServiceURL>
>  <CoverageName>antarctica_satellite_image</CoverageName>
> </WCS_GDAL>
>
> Now if you export this datasource to a vrt:
>
> $ gdal_translate -of vrt test.xml test.vrt
>
> this is the output test.vrt file:
>

sorry, this is the correct output vrt file:

<VRTDataset rasterXSize="48333" rasterYSize="48333">
  <SRS>PROJCS[&quo...........</SRS>
  <GeoTransform> -3.1745125000000000e+06,  1.2500000000000000e+02, 0.0000000000000000e+00,  2.8160125000000000e+06, 0.0000000000000000e+00, -1.2500000000000000e+02</GeoTransform>
  <Metadata />
  <VRTRasterBand dataType="Int16" band="1">
    <Metadata />
    <SimpleSource>
      <SourceFilename relativeToVRT="1">test.xml</SourceFilename>
      <SourceBand>1</SourceBand>
      <SourceProperties RasterXSize="48333" RasterYSize="48333"
DataType="Int16" BlockXSize="1024" BlockYSize="512" />
      <SrcRect xOff="0" yOff="0" xSize="48333" ySize="48333" />
      <DstRect xOff="0" yOff="0" xSize="48333" ySize="48333" />
    </SimpleSource>
  </VRTRasterBand>
</VRTDataset>

--
Paolo Corti
Geospatial software developer
web: http://www.paolocorti.net
twitter: @capooti
skype: capooti

This electronic communication and any attachments may contain confidential and proprietary 
information of DigitalGlobe, Inc. If you are not the intended recipient, or an agent or employee 
responsible for delivering this communication to the intended recipient, or if you have received 
this communication in error, please do not print, copy, retransmit, disseminate or 
otherwise use the information. Please indicate to the sender that you have received this 
communication in error, and delete the copy you received. DigitalGlobe reserves the 
right to monitor any electronic communication sent or received by its employees, agents 
or representatives.