check the Initial gamma threshold value. Its set as “1”, try by decreasing the value
After many mistakes and read a lot in the forum, I finish StaMPS (1,8) and export a kml file but i think is wrong. Now I need to do a processing with a stack of at least 20 images and read the manuals to interpret the interferograms.
Is there a way to export the results to Geotiff format?
thank you
Nice to see that the technical part works.
You might get better results with a larger stack of images. It would clearly improve the selection of suitable ps and the weeding of noise ect.
I would also recommend to run the steps separately:
stamps(1,1), stamps(2,2),… and check the printed messages, maybe adjusting the parameters which are relevant for the different steps (listed in the manual) with setparm(x,y)
I’m not a Matlab expert, maybe someone can comment on the GeoTiff question.
Thak you @ABraun i will process a stack with 20 images to obtain result better and i will experimet with parameters step by step.
as indicated in chapter 2.1 of the manual, you have to prepare the conf file and set the correct paths for StaMPS, triangle and snaphu and then source the file so these paths (and all scripts which are stored in them) can be found by the shell
Hi,
I have the same issue “0 PS selected initially”.
How did you solve it?
Thanks!
Have you checked if the coregistration in SNAP was sucessful?
Where is you study area and how large is it?
0 is suspicious and something must have gone wrong.
To get a few more, you can increase 0.4 to 0.42 in the mt_prep step.
Thanks for your reply! I think all steps were successful up to this point. But, I am experimenting with a very small stack to see how far I can get in the processing sequence - I have only 5 images in my stack (1 master and 4 slaves) and I think this might be the problem. Do you agree?
yes, the identification of persistent scatterers requires a statistically robust time-series to determine which of the points is stable. So using too few images might result in 0 PS in the end. But at least you can test the pre-processing until the PS selection.
what about this one. https://www.simpliv.com/developmenttool/matlab-app-designing-the-ultimate-guide-for-matlab-apps
Hello @wharfbanger
Sorry for the late response, I solved it by modifying the initial amplitude values and increasing the number of images. I searched the scrip where to modify it but honestly I did not want to move it.
Good luck.
hey…
i’m new to linux and don’t know its basics…neither i’m familar with python programming…
kindly tell me how to install stamps in ubuntu step by step…
thank you
Actually you just download it and make it availabe to you shell by sourcing the conf file as described in the manual.
Note that snaphu and triangle nees to be installed separately.
Hi Thorsten,
I have install StaMPS-4.1-beta in my own machine, I followed your instructions and everything went smoothly,
However,
when I’d like to run, mt_prep_snap I got message, says this command isn’t found, but when I run source ~/StaMPS-4.1-beta/StaMPS_CONFIG.bash
and then run mt_prep_sanp it works,
So, how could I dded up it permanently?
file:///home/falah/Desktop/Screenshot%20from%202020-01-10%2016-59-13.png
Many thanks
you can include source command in your bash_profile which is then called upon every startup (and includes the folders defined in it).
It is similar to the PATH variable in Windows which allows to call the commands in the listed directories from any location.
But I have never done it, I always manually source the StaMPS config file, because I don’t need it that often.
Yes sure, source manually Stamps.CONFIG.bash,
I also tried to add up the path, but it wasn’t accepted, I don’t know why, but I’ll give a trail again.
Dears I can not run mt_prep_snap or gamma correctly instead of not editing config file well dears i need your help thanks for your courageous help
please understand that we cannot easily know the problem by looking at these outputs. There can be many reasons why the script does not find the data in the given folder. But we need more information to help you.
Your screenshots above indicate that the data exported from SNAP lies in
/home/endashaw/INSAR_master_date
if dem, diff0, geo, rslc are inside this folder, the script should be able to run.
Do they contain the data as required? An example is given here: Workflow between SNAP and StaMPS