Example: Meridional temperature during spin-up
Finally, the following command was issued:
mlayersection.sh hycom_031_h.nc hycom_031_TS.nc thknss temp lat 16 1 21
By executing this command, a set of ppm & gif images for a meridional temperature section are created, at longitude node no. 16, for time steps no. 1 through 21. Note that for spherical grids, values along the horizontal axis at the bottom correspond to coordinate values (here, °N). When these images are assembled as a gif animation, the result is:
mlayersection.sh --help mlayersection.sh / ncl-metno 1.2 >>> >>> >>> NOTE: The user is **STRONGLY** recommended to copy >>> /home/arnem/lib/ncl-metno/userdef.ncl >>> to the directory where the command 'mlayersection.sh' is given, >>> and at least specify >>> * color map (palette) >>> -otherwise, the series of files produced by mlayersection.sh >>> will (usually) NOT have the same color map (see more information below) >>> >>> NOTE: This script assumes that the variable to depict has been >>> stored with dimensions in the order x -y -layer(-time) >>> or lon-lat-layer(-time) >>> (w/ Fortran style sequence of dimensions). >>> >>> >>> Syntax: >>> ======= >>> >>> mlayersection.sh <hfile> <varfile> <hname> <varname> <dimname> <node> <first> <last> (<step>) >>> where >>> <hfile> name of netCDF file w/thickness results >>> <varfile> name of netCDF file w/requested variable >>> you may use '.' if both variables are on the same file >>> <hname> name of thickness variable >>> <varname> name of variable to depict >>> NOTE! This script requires the existence of an >>> attribute 'missing_value' to <varname> >>> <dimname> name of crossection's horizontal dimension >>> e.g., lat for a lat-z (meridional) crossection >>> <node> node of non-depicted dimension >>> if <dimname> is lat , this is the lon grid no. >>> <first> first time step no. >>> <last> last time step no. >>> <step> time step between consequtive frames >>> (optional, set to 1 if not specified by user) >>> <delay> frame delay in ms (optional, set to 10 if not specified by user) >>> >>> The script will produce a gif animation. >>> >>> >>> User specifications: >>> ==================== >>> >>> By copying the default spec.s from >>> /home/arnem/lib/ncl-metno/userdef.ncl >>> to the directory where the command 'mlayersection.sh' is given, >>> the user may specify >>> * title >>> * font >>> * zooming >>> * color map (palette) >>> * no. of colors >>> * plot size limits >>> (look up, or copy, this file to edit your own 'userdef' file). >>> >>> >>> Example: >>> ======== >>> >>> mlayersection.sh hycom_expt007.nc . thknss salin lat 30 47 49 >>> will produce a lat-z crossection normal to longitude node no. 30, >>> of the variable 'salin' on the file 'hycom_expt007.nc', >>> w/ layers given by 'thknss' on the same file, >>> from timestep no. 47, 48 and 49 >>> >>> >>> Terminating.