Snap2stamps error

[ryeramirez]

Hi, @ABraun!

Since I am doing the processing per batch (i.e. per 10-20 images), which is in my experience a lot faster compared to processing the whole dataset in one run given the current resources I have, I didn’t do any interferogram re-computation for the batches I have processed before experiencing the problem.

And to trace any source of error when doing StaMPS analysis after processing all batches, I have separated the diff0 and rslc folders created thereafter (after doing the solution proposed). I will merge all all soon.

I hope this won’t create another issue during the StaMPS analysis.

Thank you.

[ABraun]

This surely helps us, thank you!

[ryeramirez]

Hi, @ABraun

Just an update.

After combining all preprocessed data before and after implementing the solution proposed, the StaMPS processing was successful.

Thank you.

[ABraun]

Sounds good, thank you!

[suribabu]

Dear Sir,
I recently updated SNAP Latest version for SNAP2StaMPS processing. My server having these below specifications. Processing 52 interferograms creation it took around 3 days time. Please suggest what setup i wanna change in my Windows 10 server.

[ABraun]

in case you are using SRTM 3 Sec for the integrated topographic phase removal: SRTM ZIP-files are corrupted or not found

[suribabu]

In my Study I’m using SRTM 1sec for interferogram generation.

[ABraun]

you can try to optimize the memory consumption as described here: I’m getting the error “Cannot construct DataBuffer”, "“GC overhead limit exceeded” or “Java Heap Space”. What can I do?
If you have 128 GB RAM you can set Xmx to 96G

[suribabu]

Thank you ABraun.

[nachin6789]

Hi.
I have the following error message in snap version 8.

I knew that for version 7 of SNAP I had to modify the file if only 1 burst is used.

My question is, should I change the names of the parameters in the chart “coreg_ifg_computation_subset.xml” (exactly the same as in version 7 of this post)?:

@szw

so, if you use snap2stamps scrips in snap7, you have to change the parameter names in graph “coreg_ifg_computation_subset.xml” in section:

Enhanced-Spectral-Diversity

1. ```
<sources>

```

```

```

512

6. ```
  <fineWinHeightStr>512</fineWinHeightStr>

16

8. ```
  <fineWinAccRange>16</fineWinAccRange>

128

10. ```
  <xCorrThreshold>0.1</xCorrThreshold>

0.15

12. ```
  <numBlocksPerOverlap>10</numBlocksPerOverlap>

<useSuppliedRangeShift>false

14. ```
  <**useSuppliedAzimuthShift**>false</useSuppliedAzimuthShift>

0.0

16. ```
  <overallRangeShift>0.0</overallRangeShift>

```

[sumiya]

I guess, it should be libgforthran3 error when i use SNAP8, Ubuntu 20.04. My project covering 4 burst on IW2 sub swath

######### CONFIGURATION FILE ######
###################################

PROJECT DEFINITION

PROJECTFOLDER=/bigdata/sentinel/huwsgul
GRAPHSFOLDER=/bigdata/sentinel/huwsgul/graphs
##################################

PROCESSING PARAMETERS

IW1=IW2
MASTER=/bigdata/sentinel/huwsgul/S1B_IW_SLC__1SDV_20190705T233118_20190705T233145_017005_01FFE4_67D3_split_Orb.dim
##################################

AOI BBOX DEFINITION

LONMIN=99.1622
LATMIN=49.8046
LONMAX=100.8844
LATMAX=51.3940
##################################

SNAP GPT

GPTBIN_PATH=/usr/local/snap/bin/gpt
##################################

COMPUTING RESOURCES TO EMPLOY

CPU=30
CACHE=80G
##################################

[NodeId: Enhanced-Spectral-Diversity] Operator ‘SpectralDiversityOp’: Unknown element ‘useSuppliedShifts’\n-- org.jblas INFO Deleting /tmp/jblas3078389692781098785/libjblas.so\n-- org.jblas INFO Deleting /tmp/jblas3078389692781098785/libjblas_arch_flavor.so\n-- org.jblas INFO Deleting /tmp/jblas3078389692781098785/libquadmath-0.so\n-- org.jblas INFO Deleting /tmp/jblas3078389692781098785/libgfortran-4.so\n-- org.jblas INFO Deleting /tmp/jblas3078389692781098785\n"

is there any other ways to solve this problem?
Many of members faced into this kind of error. I tested nasa method (administrator@raster:~/gissoft/libgfortran/opt-linux_64) to solve it. But no difference

[ABraun]

How many bursts did you select during TOPS Split?

Have you seen this suggestion?

Snap2stamps error

Try to change <useSuppliedShifts>false</useSuppliedShifts> to <useSuppliedRangeShift>false</useSuppliedRangeShift> <useSuppliedAzimuthShift>false</useSuppliedAzimuthShift> in coreg_ifg_computation.xml file This option is changed to two attributes in range and azimute for snap V.7

[nachin6789]

@sumiya

I guess, it should be libgforthran3 error when i use SNAP8, Ubuntu 20.04. My project covering 4 burst on IW2 sub swath

use: libgfortran5

[sumiya]

4 burst in IW2. Yes tried it on SNAP 8. Didn’t solved.
Should i downgrade to SNAP7?

My difference than others, just used python v3.8. During this, i changed print xxx in to print(xxx) inside of py files .

[ABraun]

actually, SNAP 7 and 8 are not different here (no downgrade necessary nor recommended), so once you have modified coreg_ifg_computation.xml the problem should no longer persist.

[sumiya]

After that that seems much closer to before.

Error: [NodeId: Enhanced-Spectral-Diversity] Operator ‘SpectralDiversityOp’: Unknown element ‘useSuppliedShifts’\n-- org.jblas INFO Deleting /tmp/jblas2154286250877908177/libjblas.so\n-- org.jblas INFO Deleting /tmp/jblas2154286250877908177/libjblas_arch_flavor.so\n-- org.jblas INFO Deleting /tmp/jblas2154286250877908177/libquadmath-0.so\n-- org.jblas INFO Deleting /tmp/jblas2154286250877908177/libgfortran-4.so\n-- org.jblas INFO Deleting /tmp/jblas2154286250877908177\n"
[1] Finished process in 6.807957410812378 seconds.

[sumiya]

how i can change it?. Do i need to remove ligfortran4.x?

[nachin6789]

sudo apt-get update

sudo apt install libgfortran5

[sumiya]

Have you see difference of OS when you using snap2stamps packages. I have changed 16.04 into 20.04.

[sumiya]

Is it possible to error due to many of version?
result of sudo apt install libgfortran5

error denoting v4