Include pixels using the region defined in the image viewer.
Include points that lie within the region defined in the image viewer.
The region definition is converted into the coordinate system relevant to the data set before it is applied.
Use the region in the image viewer to include points from the default data set.
Include points in the data set labelled “2”.
Include points in data sets “src” and “bg”.
>>> notice2d_image(["src", "bg"])