Good day!
I’m trying to do radiometric calibration in ENVI. I saved cropped S3L1 images in netcdf4. Now ENVI asks me to provide gain and offset for a band.
Where can I find it?
I tried ./Bands/frame_offset but it did not work.
Thank you
Good day!
I’m trying to do radiometric calibration in ENVI. I saved cropped S3L1 images in netcdf4. Now ENVI asks me to provide gain and offset for a band.
Where can I find it?
I tried ./Bands/frame_offset but it did not work.
Thank you
Select the band in SNAP and then chose from the menu Analysis / Information.
Thank you!
Can I find it somewhere in .nc files (metadata or something else) if i want to open them not in SNAP?
Yes, it is in the variable attributes of the NetCDF as scale_factor
and add_offset
.
See the product format specification. Here for OLCI:
https://sentinel.esa.int/documents/247904/1872756/Sentinel-3-OLCI-Product-Data-Format-Specification-OLCI-Level-1
Thank you, Marco. We’ll see