Tim Smith wrote: > > Thanks Daniel, > I tried this with the area I'm viewing and it has reduced the amount of > features, which is great. > Is it possible to use SetSpatialFilter to dynamically filter the > features I require as part of a map renderer? > i.e. would this be feasible from a performance perspective? >
Yes, it should be possible to change the filter multiple times. You'd have to call OGRLayer::ResetReading() each time you change the spatial filter and then you can use GetNextFeature() calls to read the features that match the new filter. Daniel -- Daniel Morissette http://www.mapgears.com/ ------------------------ Yahoo! Groups Sponsor --------------------~--> Everything you need is one click away. Make Yahoo! your home page now. http://us.click.yahoo.com/AHchtC/4FxNAA/yQLSAA/dkFolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/mitab/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
