SAR Subset

[SAR2016]

Is there any way in SNAP to clip the image through an available clipping shape file rather than giving the coordinates of the area of interest manually?

Thanks!

[ABraun]

no need for new topics at all times

Subset several images on a same area

Hello, I would like to subset several radar images on a same area while making sure they will all have the same size (same number of rows and columns). The problem is that the images are obtained from different passes thus not covering exactly the same percentage of the area of interest. Usually, it is possible to add NoData on the subsetted raster then obtain the exact footprint of each radar image. Do you know if this functionality is existing on SNAP ? Many thanks for your answer, Kind r…

SNAP: Clip Raster by Shapefile

I have a sentinel GRD image that i want to analyse only in some specific areas. Is there a way to create a subset with clipping or similar? I have done it with Raster -> Subset, but it is rather time consuming and not exact… thanks

Clip raster file using Shapefile

Greetings! How can I clip a part of image using shapefile in SNAP? Thanks in advance

It is possible to clip S-1 before corregistration using shapefile

Hi! I would like to ask for some help. I want to create the interferometry using the S-1 images. Before creating the coregistration I want to cut out my study area using a shapefile. Is this possible? I am also having an overlap problem. My study area shapefile does not overlap with the S-1 image. I used the same projection and they are overlapping in other GIS software. Thank you!

Cropping a specific area from a whole scene

greeting! i have checked others discussion regarding this topic but i cant understand, maybe it is because i am new to this application. this is my whole scene [image] and this is the specific area i want to work on ( .shp file) i import this using vector->import->ESRI shapefile [image] how to crop the image to a specific area? can you give the details step-by-step? thank you so much in advance

[baotran1308]

Hi everyone,
Recently, I downloaded Sentinel 1 - SAR image. When I open file in SNAP, location of my study area was reversed. I think there is something wrong here. Anyone can explain for me and give me solution.

Thank you very much.

[mengdahl]

The images are in sensing geometry, you need terrain correct them before use. Study the tutorials and older discussions on this forum.

[baotran1308]

Dear all,
Firstly, thank you Mengdaht,
I used terrain correct and my image was right in shape.
However, when I used image corrected terrain to analyse polarimetric parameters in SNAP, it appear this message. Anyone can help me.
Thank you in advance

[ABraun]

Your data is VV/VH only. For most of the polarimetric analyses you need full-polarized data HH/HV/VH/VV

Besides that, calibrating to Sigma0 is no suitable pre-processing for polarimetry. Use the complex calibration instead.

[yang121]

I am so sorry. I cant find the answer about to clip the image through an available clipping shape file rather than giving the coordinates of the area of interest manually?

[ABraun]

Use the Land/Sea Mask operator - you will find instructions here:

• SNAP: Clip Raster by Shapefile
• How do creat subset image by vector polygon using S1-toolbox?
• Clip raster file using Shapefile
• Subset using Vector file
• How do creat subset image by vector polygon using S1-toolbox?
• SNAP: Clip Raster by Shapefile
• How to Subset a Image in the shape of Polygon from a geocoded Image