Error: [NodeId: Apply-Orbit-File] Input should be a SAR product

Hi everybody,
I have created the following graph to take a SAR image, select a subset and extract GEOTiff images of both polarizations.


My problem is that when I use this graph using gpt command lines, it tells me the input should be a SAR product (IT IS !)
I also tried to remove the Apply Orbit-File part of my graph, then it tells me that my input should be a Sentinel-1 Product… (It is also)
here is my xml file with the line of command:

gpt C:\Users\macl\Documents\Kore_Deimos_UK\Graph_False_Sigma_0_VV_VH_subset.xml -Pinput=C:\Users\macl\Documents\Kore_Deimos_UK\S1A_IW_GRDH_1SDV_20200527T174811_20200527T174836_032754_03CB4D_285A.SAFE\manifest.safe -Poutputvv=C:\Users\macl\Documents\Kore_Deimos_UK\Data_Output\output_VV.tif -Ppolygon=‘POLYGON((-0.9619727471687756 46.883315522721276,-0.8466163018562756 46.883315522721276,-0.8466163018562756 46.82602880080658,-0.9619727471687756 46.82602880080658,-0.9619727471687756 46.883315522721276))’ -Poutputvh=C:\Users\macl\Documents\Kore_Deimos_UK\Data_Output\output_VH.tif

Thanks for your help

1 Like

can you pleas upload the XML file?

Graph_False_Sigma_0_VV_VH_subset.xml (11.3 KB)

It is a little messy, the subset comes at the end of it because I added it at the end… Maybe I should use first only the graph that will create the subset and then another that will take care of the rest of the code…

I can confirm that it runs fine within SNAP.

@marpet Do you see a syntax error here?

I have the same problem just after mosaicing

does your question also refer to the graph processing tool or did you only get the same error message?
Please list your steps before mosaicing

Hi, I have the same problem but with SliceAssembly

I run XML file with gpt in python.

Error: [NodeId: SliceAssembly_Master] Input should be a SAR product
first_line_time metadata value is null
last_line_time metadata value is null

What is interesting is that for SLC S1A_IW_SLC__1SDV_20180831T165143_20180831T165210_023493_028EC7_61F7 and S1A_IW_SLC__1SDV_20180831T165118_20180831T165145_023493_028EC7_5DD4 gpt failed.
But when load XML in the GraphBuilder in Snap the process does not fail. Why? What is wrong?
Thanks