Here we will show how to link parameters of Panel objects, typically from widgets to other objects. To do this, we will introduce three APIs:
obj.link: convenient high-level API to link objects via Python calls
obj.param.watch: powerful but lower-level Python API provided by param
At the end of this notebook, we will then show how to use these APIs to set up links between widgets and plots that work even in exported HTML files where the Python process is no longer available.