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Creates a text based file containing band values for single pixels or aggregate values for a grid of pixels. |
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Example 1 Matchups to In Situ Cruise Stations |
Example 1 Matchups to In Situ Cruise Stations
This uses a data file which contains measurement time and location for an in situ cruise. It then extracts matching pixels (in the form of 5x5 mean aggregate) for an input level-2 file with criteria restrictions of a 3 hour time window and several quality flags.
Command Line Entry
gpt PixExGraph.xml -Pifile=A2010317175500.L2_LAC_OC.nc -p PixEx.par -Phome=$HOME -PoutputFilePrefix=CV5_A2010317175500 -PcoordinatesFile=cruiseCV5_2010317.txt |
File = PixExGraph.xml
<graph id="PixExGraph">
<version>1.0</version>
<node id="Read">
<operator>Read</operator>
<sources/>
<parameters class="com.bc.ceres.binding.dom.XppDomElement">
<file>${ifile}</file>
<formatName>SeaDAS-L2</formatName>
</parameters>
</node>
<node id="PixEx">
<operator>PixEx</operator>
<sources>
<sourceProduct refid="Read"/>
</sources>
<parameters class="com.bc.ceres.binding.dom.XppDomElement">
<outputDir>${home}/${outputDir}</outputDir>:
<outputFilePrefix>${outputFilePrefix}</outputFilePrefix>
<coordinatesFile>${home}/${coordinatesFileDir}/${coordinatesFile}</coordinatesFile>
<timeDifference>${timeDifference}</timeDifference>
<exportBands>${exportBands}</exportBands>
<exportTiePoints>${exportTiePoints}</exportTiePoints>
<exportMasks>${exportMasks}</exportMasks>
<windowSize>${windowSize}</windowSize>
<aggregatorStrategyType>${aggregatorStrategyType}</aggregatorStrategyType>
<expression>${expression}</expression>
<exportExpressionResult>false</exportExpressionResult>
</parameters>
</node>
</graph>
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File = PixEx.par
#home=DEFINED_ON_COMMAND_LINE outputDir=Desktop/GptExamples/help/PixEx/ #outputFilePrefix=DEFINED_ON_COMMAND_LINE coordinatesFileDir=Desktop/GptExamples/help/PixEx #coordinatesFile=DEFINED_ON_COMMAND_LINE timeDifference=3H exportBands=true exportTiePoints=false exportMasks=false windowSize=5 aggregatorStrategyType=mean expression=!(l2_flags.HIGLINT and l2_flags.HISATZEN and l2_flags.STRAYLIGHT) |
File = cruiseCV5_2010317.txt*
* The coordinates file must be tab delimited -- exactly one tab and no character spaces between each field.
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