# get_data_contour_prefs¶

sherpa.astro.ui.get_data_contour_prefs()

Return the preferences for contour_data.

Returns

prefs – Changing the values of this dictionary will change any new contour plots. The default is an empty dictionary.

Return type

dict

contour_data()

Contour the values of an image data set.

Notes

The meaning of the fields depend on the chosen plot backend. A value of None (or not set) means to use the default value for that attribute, unless indicated otherwise.

alpha

The transparency value used to draw the contours, where 0 is fully transparent and 1 is fully opaque.

colors

The colors to draw the contours.

linewidths

What thickness of line to draw the contours.

xlog

Should the X axis be drawn with a logarithmic scale? The default is False.

ylog

Should the Y axis be drawn with a logarithmic scale? The default is False.

Examples

Change the contours to be drawn in ‘green’:

>>> contour_data()
>>> prefs = get_data_contour_prefs()
>>> prefs['color'] = 'green'
>>> contour_data()