1.1.3.0 coordsys.findaxis

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coordsys.findaxis - Function

1.1.3 Find specified axis in coordinate system
Description

This function finds the specified axis in the Coordinate System. If the axis does not exist, it returns F.

Arguments


Outputs
coordinate	Coordinate number
	allowed:	int
	Default:
axisincoordinate	Axis in the coordinate
	allowed:	int
	Default:
Inputs
world	is axis a world or pixel axis ?
	allowed:	bool
	Default:	true
axis	Axis in coordinate system
	allowed:	int
	Default:	0

Returns
bool

Example

"""
#
print "\t----\t findaxis Ex 1 \t----"
csys=cs.newcoordsys(direction=T, linear=2)          # RA/DEC/Lin1/Lin2
rtn=csys.findaxis(T,1)                              # DEC
rtn
#{’axisincoordinate’: 1L, ’coordinate’: 0L, ’return’: True}
rtn = csys.findaxis(T,2)                            # Lin1
rtn
#{’axisincoordinate’: 0L, ’coordinate’: 1L, ’return’: True}
#
"""

In these examples, the Coordinate System has 2 coordinates and 4 axes (0-rel, both world and pixel the same). The first example finds the DEC axis (coordinate system axis 1) to be the second axis of the Direction Coordinate (coordinate 0). The second example finds the first linear axis (coordinate system axis 2) to be the first axis of the Linear Coordinate (coordinate 1).

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