Jump to content

extract spectral data using SAGA-GIS


Recommended Posts


I'm beginer in use of SAGA-GIS.

I did a topographic correction on OLI/8 image following this steps:

1- I open SRTM of 30m  (1arc ) of reolution and OLI image in Q-GIS

2- I cut the image at the study area using Q-GIS

3- I open the cut images (srtm, oli) in SAGA

4-I did topographic correction 

I looked for to extract spectral data from corrected image as folow :

1-I open a shapefile contains the points in saga, but when I display the shapefile with images the images disappears. I expected a difference between projections but the two files have same one "I think".

2- I used "add grid values to points" tool but there was no data in new created column.

I obtain same result whene I use "add grid values to shapes" tool. 



I read many tutorials I did not find some one hows talk about topographic correction or about the tools used to extract data.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.



If you enjoy our contents, support us by Disable ads Blocker or add GIS-area to your ads blocker whitelist