/usr/share/metview/app-defaults/CommonMacroFuncs/acc is in metview-data 5.0.0~beta.1-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | # Metview Macro
# **************************** LICENSE START ***********************************
#
# Copyright 2012 ECMWF. This software is distributed under the terms
# of the Apache License version 2.0. In applying this license, ECMWF does not
# waive the privileges and immunities granted to it by virtue of its status as
# an Intergovernmental Organization or submit itself to any jurisdiction.
#
# ***************************** LICENSE END ************************************
function acc(z1,z2,cl)
# computes anomaly correlation coefficient between 2 fields z1 and z2
# cl is the monthly climate
x1=z1-cl
y1=integrate(x1*x1)-integrate(x1)*integrate(x1)
x2=z2-cl
y2=integrate(x2*x2)-integrate(x2)*integrate(x2)
acc=(integrate(x1*x2)-integrate(x1)*integrate(x2))/sqrt(y1*y2)
return acc
end acc
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