Chandra X-Ray Observatory
	(CXC)
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Last modified: December 2013

URL: http://cxc.harvard.edu/ciao/ahelp/get_transform_matrix.html
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AHELP for CIAO 4.9

get_transform_matrix

Context: crates

Synopsis

Extract the transform matrix from a crate.

Syntax

get_transform_matrix(crate, name)

Description

Argument Description
crate A Crate object such as a TABLECrate or IMAGECrate
name The name of the transformation (e.g. 'EQPOS'); case insensitive.

The get_transform_matrix command extracts the transform matrix for the given transform name from the input crate.

Example

>>> cr = read_file("evt2.fits")
>>> print(get_transform_matrix(cr, "SKY"))
[[  8.00000000e+00   0.00000000e+00   0.00000000e+00]
 [ -0.00000000e+00   8.00000000e+00   0.00000000e+00]
 [  2.28450000e+03   2.73250000e+03   1.00000000e+00]]

Bugs

See the bug pages on the CIAO website for an up-to-date listing of known bugs.

Refer to the CIAO bug pages for an up-to-date listing of known issues.

See Also

crates
copy_piximgvals, get_axis_transform, get_col, get_col_names, get_colvals, get_crate_item_type, get_crate_type, get_key, get_key_names, get_keyval, get_number_cols, get_number_rows, get_piximg, get_piximg_shape, get_piximgvals, get_transform
transform
apply_transform, copy_transform, get_transform_type

Last modified: December 2013
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