The old and deprecated API specified the interpolation style as part of the BackgroundControl object passed to this ctor. This is still supported, but the work isn't done until the getImage() method is called
Don't call this image (not even in test code). This can be a very costly function to get a single pixel. If you want an image, use the getImage() method.
For purposes of backwards compatibility, older config files that use root="root" instead of root="config" will be loaded with a warning printed to sys.stderr. This feature will be removed at some point.
For purposes of backwards compatibility, older config files that use root="root" instead of root="config" will be loaded with a warning printed to sys.stderr. This feature will be removed at some point.
Tasks other than cmdLineTask.CmdLineTasks should not accept a blob such as a butler data reference. How we will handle data references is still TBD, so don't make changes yet! RHL 2014-06-27