[ncl-talk] Computing coefficient of determination
Dennis Shea
shea at ucar.edu
Thu Mar 5 10:45:30 MST 2015
The question is not clear to me.
Click 'Functions'; search for 'correlation'
http://www.ncl.ucar.edu/Document/Functions/Built-in/escorc_n.shtml
http://www.ncl.ucar.edu/Document/Functions/Contributed/pattern_cor.shtml
===
x(ntim,nlat,mlon), y(ntim,nlat,mlon)
r = *escorc_n*(x,y,0,0) ; r(nlat,mlon) ; r2 = r^2
===
ra = *pattern_cor*(x, y, 1.0, 0) ; no weighting, centered,
ra(ntim); r2 = ra^2
clat = *cos* <http://www.ncl.ucar.edu/Document/Functions/Built-in/cos.shtml>(0.01745329*lat)
; cos(lat) weight
re = *pattern_cor*(x, y,clat, 0) ; cos(lat) weighting, centered,
re(ntim); r2 = re^2
===
On Thu, Mar 5, 2015 at 5:16 AM, Darren Slevin <slevindn at tcd.ie> wrote:
> Hi,
> I would like to compute the coefficient of determination (r squared)
> between 2
> gridded datasets of the form (time,lat,lon). Is there to do this using
> NCL? Can I use the function regcoef? Thanks.
> regards,
> Darren
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