[Mapserver-users] Zoom to Selected Feature

[woodbri at swoodbridge.com]

Patrick,

I do this in my router display application

see http://imaptools.com/demos1/?tab=2

The way I solved this problem is to open the shapefile for the layer 
and get its extents in mapscript, then you that info to $map-
>setextent()

My PHP code looks like this:


         $router = ms_newShapefileObj($shapefile, -1);
         $ext = $router->bounds;
         /* increase bounds by 5%, do the math */
         $rminx = 1.025*$ext->minx - 0.025*$ext->maxx;
         $rmaxx = 1.025*$ext->maxx - 0.025*$ext->minx;
         $rminy = 1.025*$ext->miny - 0.025*$ext->maxy;
         $rmaxy = 1.025*$ext->maxy - 0.025*$ext->miny;
         $map->setExtent($rminx, $rminy, $rmaxx, $rmaxy);
         $router->free();

-Steve

On 28 Mar 2003 at 21:23, Patrick Rouse wrote:

> I've scoured the archives and seen this question asked before, but I
> didn't seem to see any clear cut answers, so here it goes again.  I
> have a layer of weather stations and I would like to allow the user to
> input an ID and have the map zoom to that point.  It would be similar
> to Steve Lime's 'find' tool on the MDNR browser, but would not launch
> a popup with one or many hyper link query results, it would
> automatically zoom to the point.  I am sure this can be done, so I
> guess my real question is having one can assist with some sample code.
> 
> Thank you
> 
> Patrick Rouse
> Senior GIS Analyst
> The Weather Channel
> 
>