1.1.3.0 coordsys.findcoordinate

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coordsys.findcoordinate - Function

1.1.3 Find axes of specified coordinate
Description

This function finds the axes in the Coordinate System for the specified coordinate (minimum match is active for argument type). By default it finds the first coordinate, but if there is more than one (can happen for linear coordinates), you can specify which. If the coordinate does not exist, it returns F.

See also the function axesmap which returns the mapping between pixel and world axes.

Arguments


Outputs
pixel	Pixel axes
	allowed:	intArray
	Default:
world	World axes
	allowed:	intArray
	Default:
Inputs
type	Type of coordinate to find: direction, stokes, spectral, linear, or tabular
	allowed:	string
	Default:	direction
which	Which coordinate if more than one
	allowed:	int
	Default:	0

Returns
bool

Example

"""
#
print "\t----\t findcoordinate Ex 1 \t----"
csys=cs.newcoordsys(direction=T)
rtn=cs.findcoordinate(’direction’)
print rtn
#{’world’: [0L, 1L], ’return’: True, ’pixel’: [0L, 1L]}
print ’pixel, world axes =’, rtn[’pixel’], rtn[’world’]
#pixel, world axes = [0 1] [0 1]
#
"""

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