EllipticalROI

class glue.core.roi.EllipticalROI(xc=None, yc=None, radius_x=None, radius_y=None, theta=None)

Bases: Roi

A 2D elliptical region of interest with semimajor/minor axes radius_[xy].

Parameters:

xcfloat, optional

x coordinate of center.

ycfloat, optional

y coordinate of center.

radius_xfloat, optional

Semiaxis along x axis.

radius_yfloat, optional

Semiaxis along y axis.

thetafloat, optional

Angle of anticlockwise rotation around (xc, yc) in radian.

Notes

The radius_x, radius_y properties refer to the semiaxes along the x and y axes before any rotation is applied.

Methods Summary

bounds()	Returns (conservatively estimated) boundary values in x and y
contains(x, y)	Test which of a set of (x, y) points fall within the region of interest.
defined()	Returns True if the ROI is defined
get_center()
move_to(xdelta, ydelta)	Translate the ROI to a center of (x, y)
reset()	Reset the rectangular region
rotate_to(theta)	Rotate anticlockwise around center to position angle theta.
to_polygon()	Returns vertices vx, vy of a polygon approximating the Roi, where each is an array of vertex coordinates in x and y.
transformed([xfunc, yfunc])	A transformed version of the Roi

Methods Documentation

bounds()

Returns (conservatively estimated) boundary values in x and y

contains(x, y)

Test which of a set of (x, y) points fall within the region of interest.

Parameters:

xfloat or array-like

x coordinate(s) of point(s).

yfloat or array-like

y coordinate(s) of point(s).

Returns:

insidebool or ~numpy.ndarray

An boolean iterable, where each element is True if the corresponding (x, y) tuple is inside the Roi.

Raises:

UndefinedROI

If not defined.

defined()

Returns True if the ROI is defined

get_center()

move_to(xdelta, ydelta)

Translate the ROI to a center of (x, y)

reset()

Reset the rectangular region

rotate_to(theta)

Rotate anticlockwise around center to position angle theta.

Parameters:

thetafloat

Angle of anticlockwise rotation around center in radian.

to_polygon()

Returns vertices vx, vy of a polygon approximating the Roi, where each is an array of vertex coordinates in x and y.

transformed(xfunc=None, yfunc=None)

A transformed version of the Roi