Yes, I did check using the getparm option. The value changes for the top folder but when I use getparm in individual patches, the value remains to be unchanged.
This is a major confusion now.
I have my following images after and before unwrapping.
Please do let me know about your insights about the quality of Interferograms and how to go about the interpretation of it.
With regards
Narayanee
Hi Abraun,
I changed my reference latitude and longitude in the stamps, but still the whole area displays.
The limits in the x and y axis change but the figure shows the complete area.
I have done all the 8 steps in stamps. But I still get the following error when I
type ps_plot(‘v-dao’)
Can anyone please help me in this ?
did you set LON_RG and LAT_RG as part of the ps_plot command? What values did you give these variables?
You can see the documentation here: https://github.com/dbekaert/StaMPS/blob/master/matlab/ps_plot.m
(especially lines 108-110)
Hey Abraun,
I changed it using setparm option, but I did not change the values in the ps_plot.
I will try that. Thank you for your input.
It will be nice if you can give the input for the other question on ps_plot(‘v-dao’)
With regards
Narayanee
you can only use the a flag (in “v-toa”) if you have performed atmospheric correction using TRAIN or GACOS. If this is not the case, you can only plot “v-to”.
Thank you. I will look into it.
Same here, did you fix it?
I’m having the same problem, any luck?
Hi,
try to set setparm(“merge_resample_size”,0)
and run again stamps(5,5)
stamps(5,5) command didn’t executed due to following errors:
STAMPS: Will process patch subdirectories
STAMPS: ########################################
STAMPS: ################ Step 5 ################
STAMPS: ########################################
STAMPS: Directory is PATCH_1
PS_CORRECT_PHASE: Starting
Correcting phase for look angle error…
GETPARM: small_baseline_flag=‘n’
PS_CORRECT_PHASE: Finished
STAMPS: Directory is ulaanbaatar
PS_MERGE_PATCHES: Starting
Merging patches…
GETPARM: merge_resample_size=0
GETPARM: merge_standard_dev=Inf
Processing PATCH_1
Index exceeds matrix dimensions.
Error in llh2local (line 41)
dlambda=llh(1,z)-origin(1);
Error in ps_merge_patches (line 485)
xy=llh2local(lonlat’,ll0)*1000;
Error in stamps (line 474)
ps_merge_patches
Is there any solutions.?
ps_parms_initial.log (2.6 KB)
STAMPS.log (36.9 KB)
Try this below one.
solved by myself.
stamps should be run in PATCH directory. 
Not sure what you did… but if you run StaMPS within the INSAR_XXXXX folder, it takes cares all the subfolders and so on.
Probably you run step 5 or so within the PATCH folder, which lead to the issue you reported.
Happy to see that you solved it. This is the best part of it.
Enjoy StaMPS
hello I have the following error in step 8 of the processing with Stamps:
Index in position 1 exceeds array bounds (must not exceed 30350855).
Error in ps_scn_filt (line 179)
xy_near=ps.xy(ix1:ix2,:);Error in stamps (line 540)
ps_scn_filt
I use PAZ images and the following parameters:
(extremely educated guesses by BW and MS)
| Parameter | Default | Used |
|---|---|---|
max_topo_err |
20 | 10 |
filter_grid_size |
50 | 40 |
clap_win |
32 | 16 |
scla_deramp |
‘n’ | ‘y’ |
percent_rand |
20 | 1 |
unwrap_grid_size |
200 | 50 |
unwrap_time_win |
730 | 88 |
scn_time_win |
365 | 88 |
scn_wavelength |
100 | 50 |
unwrap_gold_n_win |
32 | 16 |
can someone help me to solve the error?
I have the same problem , tried with setparm(“merge_resample_size”,0) but still not working
I have got this message during step 3 in some of the patches
“Warning, not enough random phase pixels to set gamma threshold”
And in some patches, very few pixels were initially selected, leaving nothing after the weeding step. Should I increase the selection density and repeat the whole process "stamps(1,4) for all patches? or only re-do steps 3 and 4 so that the files 2.mat files will be overwritten?
Here’s Patch 27, 21 logs
STAMPS_patch27.log (16.0 KB)
STAMPS_patch21.log (16.0 KB)
Just increase the amplitude dispersion value to 0.42.
I appreciate it. what if some of the patches have interferograms already initially deficit of pixels because the area they represent is pre-dominant by water body
There will rarely ever be any ps pixels left for weeding. Shall I continue processing and ignore those areas? or must I try the best to subset away water bodies during the pre-processing ?
After merging Is it possible to view the patch gird with each’s number on the merged scene in order to identify why some patches are devoid of PS during weeding ?
like this
