Search found 12 matches
- Thu Feb 25, 2021 6:49 pm America/New_York
- Forum: Questions/Comments
- Question: chlor_a Hu color index wavebands and coefficients
- Replies: 5
chlor_a Hu color index wavebands and coefficients
Hi everyone!I'm trying to figure out how to implement NASA's chlor_a algorithm in R for MODIS-Aqua, SeaWiFS, and VIIRS-SNPP. The OCx part of it has been no problem, but I'm having trouble finding which wavebands and coefficients to use for the Hu color index algorithm. I've been look...
- Tue Oct 16, 2018 11:24 am America/New_York
- Forum: Questions/Comments
- Question: O'Reilly band ratio - Finding best coefficients with iterative minimization routines?
- Replies: 1
O'Reilly band ratio - Finding best coefficients with iterative minimization routines?
Hello,I'm trying to assess the performance of the ocean colour band ratio algorithms for a couple different regions and sensors, and finding new optimal coefficients for different polynomial degrees using R. I started out simply using the lm() function to find the least squares polynomial throug...