Hi,
I want to create spatio-temporal variograms of NDVI data that comes in raster format, with a raster for each date of interest. For doing this in Gstat package, I need first to organize all the data into  an object of class STFDF. I would like to know if anybody knows a way of creating a STFDF object from a stack of rasters from different times.
Thanks
Sebastian Botero. 		 	   		  
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