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Using Dimension Variable
I'm trying to create a new 3D variable based on two variables in a NetCDF file as follows:
let depth_at_sigma = zpos * depth
but it produces:
**ERROR: variable unknown or not in data set: 'zpos'
zpos is a Dimension variable. The header for the NetCDF file looks like:
netcdf pom.24day {
dimensions:
xpos = 151 ;
ypos = 121 ;
zpos = 15 ;
time = UNLIMITED ; // (46 currently)
variables:
float xpos(xpos) ;
xpos:long_name = "Columns" ;
xpos:units = "column" ;
float ypos(ypos) ;
ypos:long_name = "Rows" ;
ypos:units = "row" ;
float zpos(zpos) ;
zpos:long_name = "Layer" ;
zpos:units = "sigma_level" ;
float time(time) ;
time:units = "days since 30-MAR-1998 00:00:00" ;
time:time_origin = "30-MAR-1998 00:00:0" ;
time:modulo = " " ;
float depth(ypos, xpos) ;
depth:valid_range = 0.f, 5000.f ;
depth:long_name = "Bathymetry" ;
depth:units = "meters" ;
depth:missing_value = -99999.f ;
Is there a way for me to use this variable in the way I want?
Thanks,
Steve
________________________________________________
Steve Cousins Email: cousins@umit.maine.edu
Research Associate Phone: (207) 581-4302
Ocean Modeling Group
School of Marine Sciences 208 Libby Hall,
University of Maine Orono ME 04469
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