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Reproject --> Collocate |
This example reprojects a source file (similar to Reproject: Example 4) with the main difference being that this example adds in a read node and a write node to create a multi-operator workflow. Here we are sending in the file parameter without its extension in order to formulate both the input and output file names.
Command Line Entry
For the daytime SST file:
gpt WorkflowEx01a.xml -p WorkflowEx01a.par -Pfile=A2010283180500.L2_LAC_SST |
For the nighttime SST file:
gpt WorkflowEx01a.xml -p WorkflowEx01a.par -Pfile=A2010283070000.L2_LAC_SST |
File = WorkflowEx01a.xml
<graph id="WorkflowEx01aGraph">
<version>1.0</version>
<node id="ReadNode">
<operator>Read</operator>
<sources/>
<parameters>
<file>${file}.${ifileExtension}</file>
</parameters>
</node>
<node id="ReprojectLambertNode">
<operator>Reproject</operator>
<sources>
<source>ReadNode</source>
</sources>
<parameters>
<crs>
PROJCS["Lambert_Azimuthal_Equal_Area / World Geodetic System 1984",
GEOGCS["World Geodetic System 1984",
DATUM["World Geodetic System 1984",
SPHEROID["WGS 84", 6378137.0, 298.257223563, AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
UNIT["degree", 0.017453292519943295],
AXIS["Geodetic longitude", EAST],
AXIS["Geodetic latitude", NORTH]],
PROJECTION["Lambert_Azimuthal_Equal_Area"],
PARAMETER["latitude_of_center", ${lat}],
PARAMETER["longitude_of_center", ${lon}],
PARAMETER["false_easting", 0.0],
PARAMETER["false_northing", 0.0],
UNIT["m", 1.0],
AXIS["Easting", EAST],
AXIS["Northing", NORTH]]
</crs>
<resampling>${resampling}</resampling>
<orientation>0.0</orientation>
<pixelSizeX>${pixelSize}</pixelSizeX>
<pixelSizeY>${pixelSize}</pixelSizeY>
<orthorectify>false</orthorectify>
<noDataValue>NaN</noDataValue>
<includeTiePointGrids>true</includeTiePointGrids>
<addDeltaBands>false</addDeltaBands>
<maskExpression>${maskExpression}</maskExpression>
<retainValidPixelExpression>${retainValidPixelExpression}</retainValidPixelExpression>
<applyValidPixelExpression>${applyValidPixelExpression}</applyValidPixelExpression>
</parameters>
</node>
<node id="WriteNode">
<operator>Write</operator>
<sources>
<source>ReprojectLambertNode</source>
</sources>
<parameters>
<file>${file}_${ofileSuffix}.${ofileExtension}</file>
<formatName>${ofileFormat}</formatName>
</parameters>
</node>
</graph>
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File = WorkflowEx01a.par
ifileExtension=nc ofileSuffix=Reprojected ofileFormat=NetCDF-CF ofileExtension=nc lat=37.0 lon=-76.0 pixelSize=1000.0 resampling=Bilinear maskExpression=(qual_sst == 0 or qual_sst == 1) and !l2_flags.HISATZEN retainValidPixelExpression=true applyValidPixelExpression=true |