Dear Ferreters I try to do the EOF analysis using ferret and save outputs like let efs_sst = EOF_SPACE(ssta, 1.0) let eft_sst = EOF_TFUNC(ssta, 1.0) save/file=ef_space.cdf efs_sst[l=1:3] save/file=ef_time.cdf eft_sst[i=1:3] My understanding is that ferret EOF output is related to the following : data(x,y,t) = sum_nmode[efs_sst(x,y,n)*eft_sst(t,n)] So I reconstruct the original data (SSTA) using just first EOF mode as the following let re_ssta = efs_sst[l=1]*eft_sst[i=1] Looks like problem would be to time index For testing, I plotted the reconstructed data at a certain time contour/l=1 re_ssta It is saying No Valid Data. Any solution ? Thanks -Peter |