MERIS L1b Fourth to Third Reprocessing Adaptation Processor - Command Line Description |

### Command Line Description

Since the MERIS L1b Fourth to Third Reprocessing Adaptation processor makes use of the SNAP graph processing framework, it can be used also as a command line tool. The graph processing is invoked by the command

- ${SNAP-INSTALL-DIR}/bin/gpt

To obtain general help on the graph processing, use the command

- ${SNAP-INSTALL-DIR}/bin/gpt -h

Specific help on the MERIS L1b Fourth to Third Reprocessing Adaptation processor can be obtained with

- ${SNAP-INSTALL-DIR}/bin/gpt -h Meris.Adapt.4To3

In this case, information on the usage of this particular processor is given.
The MERIS L1b Fourth to Third Reprocessing Adaptation processor does not provide any user parameters. However, as for all gpt processors, the processing setup can also be specified via a graph xml file which could look like the following:

        <graph id="Meris4thTo3rdReprocessingAdaptationTest">
            <version>1.0</version>
            <node id="reprocessingAdaptation">
                <operator>Meris.Adapt.4To3</operator>
                <sources>
                    <source>${sourceProduct}</source>
                </sources>
            </node>
        </graph>

This graph can be invoked by the following call on the command line:

- ${SNAP-INSTALL-DIR}/bin/gpt <graph-file.xml> -SsourceProduct=<path-to-source-file>