search for: foragepotential

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2011 Apr 04
1
moving mean and moving variance functions
Hello Lets say as an example I have a dataframe with the following attributes: rownum(1:405), colnum(1:287), year(2000:2009), daily(rownum x colnum x year) and foragePotential (0:1, by 0.01). The data is actually stored in a netcdf file and I'm trying to provide a conceptual version of the data. Ok. I need to calculate a moving mean and a moving variance for each cell on the following temporal windows - 7 day, 14 day, and 28 day. So far I have code for the moving a...