[R] problem with creating a netcdf file under script sh

[tuatu]

Hi everyone,
I try to make a netcdf file which disposes a difference between 2 variables
of 2netcdf files same dimension
When I programmed under R, everything is ok but when I put the code under
EOF of a sh script, an error occurs:
"Error, passed variable has a dim that is NOT of class dim.ncdf!". My
programme is:

x1<-open.ncdf("file1.nc")
x2<-open.ncdf("file2.nc")
y1<-get.var.ncdf(x1,"a")
y2<-get.var.ncdf(x2,"a")
y<- y1-y2
t<-var.def.ncdf("t",units="c",dim=x1$dim,-1)
nc<-create.ncdf("test.nc",vars=t)
put.var.ncdf(nc,t,y)
close.ncdf(nc)

Thanks in advance,
T.A


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