Mt_prep_snap (@: Badly formed number.)

[vis2hnu1]

Dear sir/madam,

I am trying to call the mt_prep_snap script during the Amplitude Dispersion step but encountered an error that I’m unsure how to resolve. I would appreciate any guidance or troubleshooting steps you might suggest.

Looking forward to your response.

Thank you!

[david-ncu2019]

dear @vis2hnu1 ,

have you tried to increase the number of patches (in range & azimuth) so that each patch contains at most 5 million SLC pixels?

[vis2hnu1]

dear @vis2hnu1 ,

have you tried to increase the number of patches (in range & azimuth) so that each patch contains at most 5 million SLC pixels?
Thank you for your response sir, I had solved that problem. Sir, Can you share any information regrading how to generate E-W, North and Vertical velocities from the LOS of Ascending & Descending velocities and any information for better understanding generated Velocities.

[david-ncu2019]

dear @vis2hnu1 ,

For this issue, I recommend you take a look at the explanation in this post: https://groups.google.com/u/1/g/mintpy/c/IBM9wToGVzE

For the scripts, you can view them here: https://github.com/LiChiehLin/3D_decomposition

[ottaviani2]

Hi @vis2hnu1,

I have the same problem, how did you solve it?

[vis2hnu1]

I changed from SNAP 10.0.00 to SNAP 9.0.00 and worked with changing the compiler versions. Go through this forum.
Link: https://forum.step.esa.int/t/segmentation-fault-core-dumped-error-during-mt-prep-snap/15615/17

[ottaviani2]

Thanks, I followed the passages but in the end I solved using Snap 9.0 instead of 10.0.

[vis2hnu1]

Dear @david-ncu2019 sir,

I had successfully performed the stamps(1,1) and stamps(2,2). But I came across something unusual about the size of pm1.mat file (12GB) in PATCH_2 folder but in the other patches they are usually around 3.5 - 4 GB. Because of that I'm facing the error sir.
Error:
Error using load
Unable to read MAT-file
/mnt/v/Kashmir_data/Ascending/2023/24_days/Stamps_Export/PATCH_2/pm1.mat.
File might be corrupt.

Error in ps_select (line 106)
pm=load(pmname);
^^^^^^^^^^^^
Error in stamps (line 356)
ps_select;

Because of this error I had mt_prep_snap again sir but again I'm facing the same error. Please help me how to rectify it sir.

Thanking You Sir.

[david-ncu2019]

Dear,

I have no information about your data sets, as well as input parameters. Please provide some information along with screenshots. Thanks!

[vis2hnu1]

Dear @david-ncu2019 sir,

I hope this email finds you well.

I am currently working on PS-InSAR analysis using StaMPS and have encountered issues regarding velocity overlay.

Issues:

1. Overlay Issues with Different Velocity Corrections:

• After exporting velocities (v, v-do, v-dmo) and applying corrections, the points do not coincide when overlaid in QGIS.
• Could you suggest reasons why this might be happening and how to ensure they align correctly?

Your expertise and insights would be greatly appreciated.

Thank you for your assistance.

Best regards,
Vishnu Vardhan