Hi Everyone!
I have already calculated the original NDSI index, and I would like to use PCA analysis for more accurate results. I read in a study that I need the brightest and the darkest component for the index calculation (NDPCSI). I also read that this corresponds to the PCA component 1 and component 2. That is also mean Band 1 and Band 2? (if not, which bands should I use) Because I did the PCA analysis with Landsat 8 Bands (1-8), but I'm not sure what I supposed to use. I am a little bit confused about it.
Somebody could help me in this case, please?
I would be very glad if you tell me.
https://www.usgs.gov/core-science-systems/nli/landsat/landsat-fractional-snow-covered-area?qt-science_support_page_related_con=0#qt-science_support_page_related_con
PCA normally use to remove the redundancy of satellite bands and to select appropriate bands for image classification.
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