I'm trying to extract a single variable from a 3-dimensional netCDF file.
[1] "file blah.nc has 3 dimensions:"
[1] "longitude Size: 200"
[1] "latitude Size: 100"
[1] "time Size: 2000"
[1] "------------------------"
[1] "file blah.nc has 1 variables:"
[1] "short temp[longitude,latitude,time] Longname:temperature Missval:-9999"
Time's units are "days". I just want to get a single day in the middle of the dataset at time=t1
say. The manual seems to indicate that I should temp1 = get.var.ncdf(blah.nc, "temp", start=c(long1, lat1, t1))
, but this gets all temperatures for all longs and lats until the ends of the arrays. I don't want to read the entire variable and then extract the desired value in R, I want the ncdf library to do it. get.var.ncdf
doesn't take a end=c(long1+1, lat1+1, t1+1)
argument as far as I can tell? So, how can I do this using ncdf?