hi!
Hi have a problem! this the phase
and this is unwrapped phase
Friends ¿what is the problem?
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use the color manipulation tab to move the color stretching of the unwrapped phase. There is probably more going on in the area which is currently purple but as snap tries to stretch the colors over the entire range, this area’s contrasts are still under-represented. Move the color balance more to the lower values.
Based on the low interferogram values in the bottom left part, these extreme values might be just unwrapping errors.
Abraun
I already did what you suggested and no more values appear
please specify your problem.
Can you please show a histogram and the color coding of the image?
what unwrapping options have you chosen for snaphu?
200 pixels overlap are recommended, but not selected by standard.
Ok, I try to it.
can you draw a diagonal line and plot a profile?
I have tried with other images and other years and places and the problem persists, it only develops one sector.
Can I send you the phase file so that you try to unwrap it?
I suspect that snaphu has something wrong
yes, we can try.
ABraun
This is the link for download the file https://drive.google.com/file/d/103UdYbECf5p2QAPU4l7cXXxxvk7XEiFm/view?usp=sharing
Thanks.
the unwrapping is currently processing but I see that your fringes are disturbed by the different burst boundaries
Actually, you should perform the TOPS Deburst after the creation of the interferogram. These phase jumps are probably one reason why the unrapping failed.
the files you send already have deburst
yes, but in the wrong order
S1A_IW_SLC__1SDV_20170225T122529_20170225T122556_015440_019589_15D7_split_deb_Stack_ifg_dinsar_flt.data
actually, you apply it after the interferogram generation (including topographic phase removal). Otherwise you get these phase jumps.
Ok! I try to it.
Very thanks!
ABraun
The error, I solved changing the version of SNAP