Interacting with Maps and Figures

The madcubapy.visualization.interaction module offers various functions to let the user interact with plotted figures and maps.

Get pixel coordinates from mouse clicks

The get_input() function opens a previously plotted Figure, or a map object (MadcubaMap or CCDData), and lets the user select points with mouse clicks:

• Left click: Adds a point to the image.

• Middle click: Deletes the last selected point.

• Right click: Ends the function and returns the selected points.

Example Usage

>>> selected_points = get_input(fig)
>>> selected_points
array([[30, 30],
       [56, 90]])

>>> selected_points = get_input(madcuba_map)
>>> selected_points
array([[13, 65],
       [23, 60],
       [70, 11]])

Returns

This function returns a numpy.ndarray containing the pixel coordinates of the selected points.

Additional Parameters

This function accepts optional keyword arguments that are passed to add_wcs_axes() if the input object is a MadcubaMap or CCDData.

>>> get_input(madcuba_map, vmin=0, vmax=100)