This question (EXTjs gridfilter: How to clearfilter without reloading store?) shows how to clear all the filters on the entire grid.
Is there a way to clear only the filters in a specific column? For example, if I have a column with a list filter that has 20 options and I select 8 of them, I'd like a button that will uncheck all of those, but leave any other filters I've selected to remain in tact.
The 'size' column on this demo is a good example of what the filtering looks like: http://dev.sencha.com/deploy/ext-4.0.0/examples/grid-filtering/grid-filter-local.html