Covariance in grid space

This operator calculates the covariance of two fields over all gridpoints for each timestep. With S(t) = {x, i_1(t,x) != missval and i_2(t,x) != missval} it is o(t,1) = Covar{(i_1(t,x), i_2(t,x)), x_1 < x <= x_n} where w(x) are the area weights obtained by the input streams. For every timestep t only those field elements x belong to the sample, which have i_1(t,x) != missval and i_2(t,x) != missval.

Usage

cdo_fldcovar(ifile1, ifile2, ofile = NULL)

Arguments

ifile1, ifile2

Strings with the path to the input files.

ofile

String with the path to the output file.