All Questions
3 questions
2
votes
2
answers
451
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Comparability of Landsats
I have collected data (spectral bands) from Landsat 4-5 and Landsat 8. I was calculating NDVI when I noticed that the two Landsats have different band numbers designated as Red and Near Infra Red (...
- 736
3
votes
1
answer
2k
views
Is atmospheric correction necessary when working with multi-spectral indexes?
When you are working with Landsat Level 1 data and calculate indexes, e.g. NDVI, NDBI, SAVI ..., do you calculate them using raw data (pixel DN value), or atmospherically corrected data (surface ...
- 423
2
votes
1
answer
993
views
Doing NDVI when nir data is given as 3 bands
I have been provided with two data sets of the same area, one with normal RGB bands and one with NIR data. My problem is that since the NIR data is given as 3 bands, i am not sure how I should ...
- 1,087