How to parametrize batch GPT variables with spaces in Python?

snap
1

I’m configuring my snap batch with python code, for example my speckle filter is:
spk_filter = “Lee Sigma”

My os.system command is some like following:

os.system(’/home/esufan/snap/bin/gpt -e’ +…’ -⁠Pspk_filter=’ + spk_filter + …)

The html batch has $spk_filter parameter, to get the filter from python code:

  <node id="Speckle-Filter">
    <operator>Speckle-Filter</operator>
    <sources>
      <sourceProduct refid="Calibration"/>
    </sources>
    <parameters class="com.bc.ceres.binding.dom.XppDomElement">
      <sourceBands>Sigma0_HH</sourceBands>
     <filter>$spk_filter</filter>

I have the following error:

org.esa.snap.core.gpf.graph.GraphException: [NodeId: ReadOp@sourceProduct] Specified ‘file’ [Sigma] does not exist.
at org.esa.snap.core.gpf.graph.NodeContext.initTargetProduct(NodeContext.java:79)
at org.esa.snap.core.gpf.graph.GraphContext.initNodeContext(GraphContext.java:195)
at org.esa.snap.core.gpf.graph.GraphContext.initOutput(GraphContext.java:162)
at org.esa.snap.core.gpf.graph.GraphContext.(GraphContext.java:91)
at org.esa.snap.core.gpf.graph.GraphContext.(GraphContext.java:64)
at org.esa.snap.core.gpf.graph.GraphProcessor.executeGraph(GraphProcessor.java:128)
at org.esa.snap.core.gpf.main.DefaultCommandLineContext.executeGraph(DefaultCommandLineContext.java:86)
at org.esa.snap.core.gpf.main.CommandLineTool.executeGraph(CommandLineTool.java:534)
at org.esa.snap.core.gpf.main.CommandLineTool.runGraph(CommandLineTool.java:388)
at org.esa.snap.core.gpf.main.CommandLineTool.runGraphOrOperator(CommandLineTool.java:287)
at org.esa.snap.core.gpf.main.CommandLineTool.run(CommandLineTool.java:188)
at org.esa.snap.core.gpf.main.CommandLineTool.run(CommandLineTool.java:121)
at org.esa.snap.core.gpf.main.GPT.run(GPT.java:54)
at org.esa.snap.core.gpf.main.GPT.main(GPT.java:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.esa.snap.runtime.Launcher.lambda$run$14(Launcher.java:55)
at org.esa.snap.runtime.Engine.runClientCode(Engine.java:189)
at org.esa.snap.runtime.Launcher.run(Launcher.java:51)
at org.esa.snap.runtime.Launcher.main(Launcher.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:62)
at com.install4j.runtime.launcher.UnixLauncher.main(UnixLauncher.java:57)
Caused by: org.esa.snap.core.gpf.OperatorException: Specified ‘file’ [Sigma] does not exist.
at org.esa.snap.core.gpf.common.ReadOp.initialize(ReadOp.java:81)
at org.esa.snap.core.gpf.internal.OperatorContext.initializeOperator(OperatorContext.java:486)
at org.esa.snap.core.gpf.internal.OperatorContext.getTargetProduct(OperatorContext.java:273)
at org.esa.snap.core.gpf.Operator.getTargetProduct(Operator.java:387)
at org.esa.snap.core.gpf.graph.NodeContext.initTargetProduct(NodeContext.java:77)
… 27 more

Error: [NodeId: ReadOp@sourceProduct] Specified ‘file’ [Sigma] does not exist.

So it is not recognizing the space in “Lee Sigma” speckle filter.
How I can do this?

the same will happen whit DEM:
DEM = “SRTM 1Sec HGT”

2

SOLVED: It is necessary to give the argument as:

spk_filter = ‘“Lee Sigma”’

3

I have this line:

command = ‘cmd /k “gpt D:\Startup_Voucher\Projetos\Artigo\Export_netcdf4.xml” + -PInput=p_preprocessed + -PBandname=Bandname + -POutput=Output_pathname’
os.system(command)

And nothing happens. The cmd opens, runs, but the output folder is empty