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v5d_setLowLev

Sets the lowest vertical offset, in grid level, for each 3-dimensional gridded variable in a Vis5D+ format file.

Prototype

	procedure v5d_setLowLev (
		lowLev [*] : integer   
	)

Arguments

lowLev

An array of integers of size numvars 

lowLev(1) = offset for first variable
lowLev(2) = offset for second variable
...
lowLev(numvars-1) = offset for last variable

Description

v5d_setLowLev() sets a lowest vertical offset, in grid level, for each data variable in a 3D gridded dataset.

By default, the bottom-most grid level of each variable is displayed at the bottom of the 3D box; each grid extends upward for however many levels are present. Sometimes, however, the bottom-most grid level of a particular variable is best positioned higher up in the grid. An example of this might be a combined ocean/atmosphere dataset. There may be a total of 18 grid levels, the bottom 8 grid levels being ocean data and the top 10 grid levels being atmospheric data. In this case, the bottom of the atmospheric data is best offset, or shifted upward, by 8 grid levels.

Elaborating on the ocean/atmosphere example, suppose we have two ocean variables named S (salinity) and To (ocean temperature), and two atmosphere variables named P (pressure) and Ta (atmospheric temperature). Further suppose there are 8 layers of ocean data and 10 layers of atmospheric data. Below is a summary showing how the v5d_setLowLev() function can address this situation: 

varnum  varname(varnum)     nl(varnum)  lowlev(varnum)
  1            S                 8            0
  2            To                8            0
  3            P                10            8
  4            Ta               10            8

v5d_setLowLev() may be called at any point between v5d_create and v5d_write().

For further information on Vis5D+ and file formats, see documentation at the Vis5D website.

See Also

v5d_create, v5d_write, v5d_write_var, v5d_close, and v5d_setUnits.

Examples


  Assignment        Comments

  numvars = 1       ; 1 physical variables
  lowLevels = new(/3, 4, 8/)
  ...
  v5d_create(...)
  v5d_setLowLev(lowLevels)

  v5d_write(...)
  v5d_close()