get_contour_transform

Synopsis

Retrieves a transform associated with a contour

get_contour_transform([id])

Description

• id - an optional ChipsId structure containing values to modify the currency state for the command, or a string to specify the id of the contour to operate on.

The get_contour_transform command retrieves a tranform that is associated with a contour. This command is part of the advanced ChIPS module; refer to "ahelp chips" for information. To load the module:

from pychips.advanced import *

Transforms are originally applied to contours either when the contour is created or after the set_contour_transform ("ahelp set_contour_transform") function has been called.

The transform returned is a Transform structure ("ahelp transform"). If no transform is associated with a contour then the value None is returned.

Example

chips> from pychips.all import *
chips> add_contour('contour.fits','wcs=params')
chips> t = get_contour_transform ()

Creates a contour with the params coordinate system applied. Retrieves the transform associated with that contour.

Bugs

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

See Also

contours

add_contour, apply_contour_transform, apply_contour_transform_inverse, current_contour, delete_contour, display_contour, get_contour, hide_contour, set_contour, set_contour_transform, shuffle_contour