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Hi. Ive calculated the spi index in matlab. And now I want to calculate the frequency (moderate, severe and strong) drought with gridded data as I want to plot the spatial in the form of frequency and severity. Thus, to calculate the frequency of each drought class (moderate, severe and strong) I have to define the spi value associated with each class and then take the frequency of values belonging to it. Can I do this in matlab? I have to have a predefined frequency in each class. Thank you in advance!

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KSSV
KSSV 2021년 3월 17일
You can use logical indexing. Also have a look on histogram.
Nurul Ain Basirah Zakaria
Nurul Ain Basirah Zakaria 2021년 3월 17일
Can I use it on gridded data?
KSSV
KSSV 2021년 3월 17일
Yes it can be used.

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Nurul Ain Basirah Zakaria
Nurul Ain Basirah Zakaria
2021년 3월 17일

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KSSV
KSSV
2021년 3월 17일

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