SNAPHU Unwrapping

zahra0729 · February 6, 2018, 4:15pm

Hi,dear.
How can you perform step of snaphu exporting and unwarping?
Is it nessecary to install linux?

ABraun · February 6, 2018, 4:39pm

no, the latest version of snaphu is windows compatible and standalone.
http://step.esa.int/main/third-party-plugins-2/snaphu/

Please see this video from 4:40

zahra0729 · February 6, 2018, 8:28pm

Hi dear,can you pls explain me, how did you perform unwarping using windows? Can i perform snaphue exporting without using linux?

ABraun · February 7, 2018, 6:24am

snaphu works with windows, please see the other topics and the video I poseted above:

zahra0729 · February 8, 2018, 3:06pm

Hi dear,could you pls, explain to me,how did you do unwarping on linux?
I have been installed virtual linux on my windows also I installed snaphu on linux, but i cant perform unwarping!!!pls help me

ABraun · February 8, 2018, 6:32pm

You do not need linux, you can run snaphu directly in windows.
http://step.esa.int/main/third-party-plugins-2/snaphu/

To access snaphu from any folder in windows, please read here: Import Unwrapped result back into SNAP for terrain correction

cyntiamee · February 10, 2018, 8:15am

I used Linux virtual in my windows.
i followed this S1TBX Stripmap Interferometry with Sentinel-1 Tutorial, download here https://sentinel.esa.int/web/sentinel/toolboxes/sentinel-1/tutorials
open page 29 - 34.

good luck

narelly · March 3, 2018, 6:27pm

I’m having the same problem. Did you get any solution?

ABraun · March 3, 2018, 6:34pm

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

narelly · March 3, 2018, 7:31pm

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

ABraun · March 3, 2018, 7:47pm

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 · March 7, 2018, 1:01pm

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 · March 7, 2018, 1:04pm

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 · March 7, 2018, 1:13pm

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?

Aashishm · March 8, 2018, 8:16am

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

ABraun · March 8, 2018, 8:23am

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

Please have a look here:

Aashishm · March 8, 2018, 9:54am

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

ABraun · March 8, 2018, 10:13am

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 · March 8, 2018, 1:37pm

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

ABraun · March 8, 2018, 1:39pm

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