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Last modified: December 2009

URL: http://cxc-newtest.cfa.harvard.edu/ciao4.2/get_transform.py.html
AHELP for CIAO 4.2

get_transform

Context: py.crates

Synopsis

Extract the transform from a crate.

Syntax

get_transform(crate, name)

Description

  • crate - input crate
  • name - transform name

The get_transform command extracts the transform with the given name from the input crate. The name check is case-sensitive.

Example

>>> cr = read_file("evt2.fits")
>>> trans = get_transform(cr, "EQPOS")
>>> trans.print_parameter_list()
Name: CRPIX Type: dmDOUBLE Value: 4096.500000, 4096.500000 Desc:
Reference Point Pixel Coordinates Parent: EQPOS
Name: CRVAL Type: dmDOUBLE Value: 259.254013, 67.195519 Desc: Center
Coordinate in decimal degrees Parent: EQPOS
Name: CDELT Type: dmDOUBLE Value: -0.000137, 0.000137 Desc: Transform
Scale in degrees/pixel Parent: EQPOS
Name: CROTA Type: dmDOUBLE Value: 0.000000 Desc: Rotation Angle Parent:
EQPOS
Name: EQUINOX Type: dmSHORT Value: 2000 Desc: Equinox of Coordinates
Parent: EQPOS
Name: EPOCH Type: dmDOUBLE Value: 2000.000000 Desc: Epoch of
Coordinates Parent: EQPOS

The "EQPOS" transform is retrieved from the input file and printed to the screen.

Bugs

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

See Also

py.crates
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_matrix
py.transform
apply_transform, copy_transform, get_transform_type

Last modified: December 2009