SNAP generates 3-band GeoTIFFs when using per pixel geocoding?

snap
#1

When I try to write a GeoTIFF I get 3 bands instead of one when I use these flags:

-Ds3tbx.reader.olci.pixelGeoCoding=true

If I don’t use those flags, I get a single band. I’m using the following XML file:

<!-- 
     1 band: gpt S3ToSingleTiffs.xml "/path/to/folder.SEN3"
     3 band: gpt -Ds3tbx.reader.olci.pixelGeoCoding=true S3ToSingleTiffs.xml "/path/to/folder.SEN3"
-->

<graph id="Graph">
  <version>1.0</version>
  
  <node id="BandSelect_1">
    <operator>BandSelect</operator>
    <sources>
      <source>${sourceProduct}</source>
    </sources>
    <parameters>
      <sourceBands>Oa01_radiance</sourceBands>
    </parameters>
  </node>
  <node id="Write_1">
    <operator>Write</operator>
    <sources>
      <sourceProduct>BandSelect_1</sourceProduct>
    </sources>
    <parameters>
      <file>debug.tif</file>
      <formatName>GeoTIFF</formatName>
    </parameters>
  </node>
  
</graph>
Trying to run OLCI IdePix via command line
#2

Hey Ken,

Found out where it came from with help from Marco: