Getting Started

Documentation

Glish

Learn More

Programming

Contact Us

Version 1.9 Build 1383

News	FAQ
Search	Home

coordsys.convertmany - Function

	Package	general
	Module	images
	Tool	coordsys

Convert many numeric mixed coordinates

Synopsis
convertmany(coordin, absin, dopplerin, unitsin, absout, dopplerout, unitsout, shape)

Arguments

coordin	in	Input coordinate
		Allowed:	Numeric matrix
absin	in	Are input coordinate elements absolute ?
		Allowed:	Boolean vector
		Default:	All T
dopplerin	in	Input doppler type for velocities
		Allowed:	String
		Default:	'radio'
unitsin	in	Input units
		Allowed:	String vector
		Default:	Native
absout	in	Are output coordinate elements absolute ?
		Allowed:	Boolean vector
		Default:	All T
dopplerout	in	Output doppler type for velocities
		Allowed:	String
		Default:	'radio'
unitsout	in	Output units
		Allowed:	String vector
		Default:	Native
shape	in	Image shape
		Allowed:	Integer vector
		Default:	Unused

Returns
Numeric matrix or fail

Description

This function converts between many mixed pixel/world/abs/rel numeric coordinates. See function convert for more information.

The only diffference with that function is that you provide a matrix holding many coordinates to convert and a matrix of many converted coordinates is returned.

Example

- cs := coordsys(direction=T, spectral=T)    # 3 axes
-
- p := [15,20,30];                           # absolute pixel coordinate
- cin := array (p, 3, 10);                   # 10 conversions each of length 3
- cin[3,] := 1:10;                           # spectral pixel runs from 1 to 10
- cin
[[1:3,]
    15 15 15 15 15 15 15 15 15 15
    20 20 20 20 20 20 20 20 20 20
    1  2  3  4  5  6  7  8  9  10] 
-
- cout := cs.convertmany (coordin=cin,     
                          absin=[T,T,T],
                          unitsin="pix pix pix",
                          absout=[T,F,T],
                          dopplerout='optical',
                          unitsout="pix deg km/s");
-
- cout
[[1:3,]
    15          15          15          15          15          15          15          15          15          15
    0.316668279 0.316668279 0.316668279 0.316668279 0.316668279 0.316668279 0.316668279 0.316668279 0.316668279 0.316668279
    1145.30291  1145.09023  1144.87756  1144.66488  1144.4522   1144.23953  1144.02685  1143.81418  1143.6015   1143.38883] 
-
- cout[,1]                                     # First coordinate
[15 0.316668279 1145.30291] 
-
- cout[,10]                                    # 10th coordinate
[15 0.316668279 1143.38883]