How do I extract the specific values from NDVI time serie?
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I have generated ndvi input file time series over crop season(1 year period) and want to extract the following; POS value;MAX sum;AVG sum;SOS;POS;EOS The discription of above mentioned parameters are as follows; (a) Phenological markers • Start of season (SOS): the date of growth start and crop emergence • Peak of season (POS): the date of the maximum NDVI value in the time series • End of season (EOS): the date of the harvesting and chlorophyll ab- sence • POS value: maximum NDVI value in the time series •
Average sum: sum of average NDVI values in the time series
• Maximum sum: sum of maximum NDVI values in the time series
• Base: the range between minimum and maximum NDVI
I am attaching input ndvi file as excel csv file. I am also attaching the output file as a sample it has not been derived from the above mentioned two input files. This is just sample output file. I am requesting to matlab signal processing comunity to please suggest me how to write this code. I would be highly obliged for any kind help.
Jyoti
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