Yes, for that last option, the MapView would display both the spatial facet and the mapped items. Areas on the map outside the spatial facet could be greyed out. This could work.
I am tending to favor the idea of a separate spatial facet box in a sidebar. This would be a google map where the current view extent would be the spatial filer. Instead of a google map, this could also be text boxes with north, south, east, west bounding coordinates. This would reduce confusion in the MapView. It's also desirable in many cases to use a spatial filter without seeing them on a map. (e.g., show me all events that happened in a certain place/city/state/country, or show me all publications written about a certain geographic region. No map view required here, just a spatial filter.) - John ************************************************** John Callahan Geospatial Application Developer Delaware Geological Survey, University of Delaware 227 Academy St, Newark DE 19716-7501 Tel: (302) 831-3584 Email: [email protected] http://www.dgs.udel.edu ************************************************** David Huynh wrote: > John Callahan wrote: > >> Re: thoughts on spatial filtering, I like the way Exhibit has been >> designed thus far, keeping filters separate form views. I was thinking >> of the spatial filter as a bounding box issue, with north, south, east , >> west coordinates. It would simply be a numeric filter (maybe range >> would work?) on each latitude and longitude. In other words, the >> spatial filtering would be very to how it is now and separate from the >> map view. >> >> You could have a facet box with a google map dedicated to assigning the >> spatial filter. If you don't want to require a Google Maps API key, >> then simply have text boxes with north, south, east, west limits. Or >> the site developer can create a list of places (predefined spatial >> filters) and supply them on the site as a pull-down menu. There are >> many ways to allow users to define bounding box coordinates. As long as >> the spatial facet accepts only numeric coordinates, you can offer many >> possibilities. >> >> Another option (possibly?) is to allow users to draw a box inside the >> Google Map view. It could show up on the map with a dotted red outline >> and shaded interior. This would simply define coordinates to pass to >> the spatial facet. Or, maybe you have a button that grabs the current >> map view and sets those coordinates as the spatial filter. You probably >> could also have a parameter that forces the spatial facet bounding box >> to always match the google map view. Any case, the google map view >> extents and spatial facet bound box would be separate. >> >> > In the last option, it seems like we should also plot the items on the > same map (so you see what you select). But then that map is a hybrid > between a facet and a view, which might be OK. I'll revamp the map view > when I get a chance. > > David > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "SIMILE Widgets" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/simile-widgets?hl=en -~----------~----~----~----~------~----~------~--~---
