getline_3dplane

 GETLINE_3DPLANE Select polyline with mouse.
    [X,Y,Z] = GETLINE_3DPLANE(FIG) lets you select a polyline in the
    current axes of figure FIG using the mouse.  Coordinates of
    the polyline are returned in X and Y and Z.  Use normal button
    clicks to add points to the polyline.  A shift-, right-, or
    double-click adds a final point and ends the polyline
    selection.  Pressing RETURN or ENTER ends the polyline
    selection without adding a final point.  Pressing BACKSPACE
    or DELETE removes the previously selected point from the
    polyline.

    [X,Y,Z] = GETLINE_3DPLANE(AX) lets you select a polyline in the axes
    specified by the handle AX.

    [X,Y,Z] = GETLINE_3DPLANE is the same as [X,Y] = GETLINE_3DPLANE(GCF).

    [X,Y,Z] = GETLINE_3DPLANE(...,'closed') animates and returns a closed
    polygon.

    Example
    --------
        imshow('moon.tif')
        [x,y] = getline_3dplane 

    See also GETLINE, GETRECT, GETPTS.

    Modified from GETLINE by SDV