I hit send preamtureley! Second question is - would it be better to have the layer in PostGIS? If so I'm not sure on how to query two layers agaisnt each other (unless like a SLAYER query)
Any thoughts would be greatly appreciated. Kind regards Mike On 30/01/2008, Mike Saunt <[EMAIL PROTECTED]> wrote: > > Hi All > > I've got a requirement to be able to 'select' multiple features and then > perform a query against them to find features from other layers that > intersect. The goal is for an interactive tool to select polygons which > will be highlighted on every map redraw (using itemnquery) and when the user > chooses to have a feature query (itemfeaturequery) against them all. > > Our issue is that our selectable layer could have in excess of 1.5 million > features and the speed for each map refresh / feature qwould be too long. > We're testing agaisnt MapInfo TAB but can have the layer in Shape or > PostGIS. > > Questions therefore are: > Can we have an attribute index built against the field for the layer > somehow that MapServer can read and therefore become ALOT faster? > > > >
