SNAPHU Unwrapping

[ABraun]

you can decrease the tile number in the conf file and run again.

[narelly]

how do I do this? I only know how to decrease the number of tiles rows and columns on SnaphuExport step

[ABraun]

Just open the conf file and move to the line with the tile numbers (quite at the end, search for “Tile control” and change the variables (standard is 10):

NTILEROW           10
NTILECOL           10

[Aashishm]

Hi
I am working with RADARSAT 2 data and while trying to unwrap the phase it’s unable to read the snaphu.conf file when I copied and pasted the snaphu call command. What should I do ?
I am doing it on VM player for windows.

[Aashishm]

Hi
I am working with RADARSAT 2 data and while trying to unwrap the phase it’s unable to read the snaphu.conf file when I copied and pasted the snaphu call command. What should I do ?
I am doing it on VM player for windows.

[ABraun]

what happens when you insert and execute the command?

Did you see that snaphu v1.4.2 is now Windows compatible and you no longer need a virtual machine?

Install SNAPHU using Cygwin

p[quote=“ABraun, post:12, topic:4828”] The latest version of snaphu is standalone and already compiled. http://step.esa.int/main/new-release-of-snaphu-1-4-2-is-available/ [/quote] please read carefully - snaphu 1.4.2. is already installed when you download it. “Compiled” means that windows can use it as it is.

[Aashishm]

the problem is , cygwin says snaphu command not found and vm player isnt able to read the config file of snaphu

[ABraun]

you don’t need cygwin any longer when you are using snaphu 1.4.2.

Please have a look here:

• Install SNAPHU using Cygwin
• Install SNAPHU using Cygwin

[Aashishm]

this is what i am getting after defining system path for snaphu1.4.2 as u told

[ABraun]

Just add the snaphu\bin folder to your system’s path variable (http://www.computerhope.com/issues/ch000549.htm) and use the window command prompt instead (https://www.howtogeek.com/235101/10-ways-to-open-the-command-prompt-in-windows-10/)

[Aashishm]

in the command prompt as well the problem is same, it is unable to read the snaphu.conf file

[ABraun]

the configuration file and the exported data must be in the folder where the command is called.

[Aashishm]

config. file is in same exported snaphu folder.

[Aashishm]

please elaborate, sorry i didnt get u…

[ABraun]

start snaphu in exacty this folder, then it will be able to read the conf file and the exported rasters.

How to Open the Windows Command Prompt from any Folder

[Aashishm]

I did as u just told but as u can see again same issue, unable to read config file

[ABraun]

your screenshot indicates that you still open snaphu in the folder F:\snaphu

You have to navigate to your directory with the exported files or open the Power Shell directly in this folder …\ab\snahpu\subset…
Go ther, hold down your shift key, right click at some empty area and select “open windows power shell here”.

It’s not that hard…

[Aashishm]

ok thanks, but now it is showing this message- pixel spacings be positive

[ABraun]

good to see it technically works. The error message about the pixel spacings is strange however. Which steps did you perform before the snaphu export?

[Aashishm]

subset_1_of_RS2-SLC-FQ12-DES-13-Jan-2018_00_Stack_ifg_dinsar_flt
i have subsetted my images then coregistered both, then generated interferogram, then topographic phase removal and then phase filtering.