I have a content type where the mapping field is optional. When I create an OpenLayers overlay and map view, the non-mapped nodes aren't shown. So if there are supposed to be 10 items per page in the view and 2 don't have mapping, then only 8 nodes will show on the map.
What I'd like to do is show the 2 non-mapped items in an attachment view below the map. I tried doing this by creating an attachment view with a filter that only displays nodes where the Geo WKT field is empty. This does only display non-mapped nodes, but I can't find a way to limit the number so that it displays the correct number (2 in the given example). I need some way to filter the number of nodes in the attachment views based on the main map view.
I realize this may be more of a Views question than a mapping question, but I thought other people working on mapping and OpenLayers may have experienced the same problem.