I want to calculate Co-efficient of determination (R^2) for the images of NDVI and T-cap brightness.
Which software give easy and best results: SPSS, ENVI, MATLAB
And what will be the input files respectively?
I am going to guess that what you want to do is to fit a regression equation of the form NDVI=f(T-cap brightness) and then find R^2 for each function you try and choose the function that gives the largest R^2. First graph NDVI against T-cap brightness to get some idea of f. I assume the NDVI can be treated as continuous. Then get a copy of the book described in the link below. Full details for running your OLS regression can be found in Chapter 16. R^2 is part of the output. R is no cost, downloadable software. Instructions for doing that and getting started are in Chapters 1 and 2 of the book. The book is available as an ebook at the second link. as well. Best wishes.
http://www.amazon.com/gp/product/0321888030/ref=s9_simh_gw_g14_i20_r?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1&pf_rd_r=1KEBX0JVZF3KD0YZWRR0&pf_rd_t=36701&pf_rd_p=2079475242&pf_rd_i=desktop
https://play.google.com/store/books/details/Jared_Lander_R_for_Everyone?id=EkpvAgAAQBAJ
Mr. David, unluckily the book content is not available here. Can i have something regarding this in another way.
Try to Google R for dummies. I think it is available free somewhere on the web. This book also covered ols regression in R, how to download the package and so on. Best wishes.
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