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coordsys.units - Function



Package general
Module images
Tool coordsys


Recover the units for each axis


Synopsis
units(type)


Arguments

type in Coordinate type
    Allowed: String from 'direction', 'stokes', 'spectral', 'linear' or unset
    Default: All



Returns
Vector of strings or fail



Description

Each axis associated with the Coordinate System has a unit. This function (short-hand name u) returns those units (in world axis order).

You can recover the units either for all coordinates (leave type unset) or for a specific coordinate type (mimumum match of the allowed types will do). If you ask for a non-existent coordinate an exception is generated.

You can set the units with function setunits.



Example
- cs := coordsys(direction=T, spectral=T)
- cs.units(T)
' ' Hz 
-
- cs.units('spec')
Hz





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