Problem setting maximum extents

Delfos, Jacob jacob.delfos at MAUNSELL.COM
Mon Jan 9 16:23:49 PST 2006


Morgan,

In this line:

>> $max_extent_obj->setExtent (7510802, 548620, 7827464, 783920);

Is there any chance you mixed up your X and Y (order of arguments is
MinX, MinY, MaxX, MaxY) ?

If your coordinates are in UTM, then the Y coordinates has 7 digits, the
x has 6.

Hope this helps,

Jacob


> -----Original Message-----
> From: UMN MapServer Users List 
> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of morgan harvey
> Sent: 10 January 2006 07:59
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: [UMN_MAPSERVER-USERS] Problem setting maximum extents
> 
> Hello.
> 
> I am using the zoompoint, zoomscale, and zoomrectangle 
> methods within  
> PHP MapScript and am observing some incorrect behavior w/r/t the  
> maximum extent argument. When zooming out of the map, the maximum  
> extents seem only to be bound to a single axis, so that, for  
> instance, the minx and maxx boundaries are met, but the map goes way  
> over the y extents. It will consistently zoom out until the 
> it passes  
> both axis constraints. All other zooming operations work 
> properly for  
> me. Is this a bug within mapserver or mapscript (i couldn't find any  
> known bug within bugzilla) or is this the way this is 
> supposed to work?
> 
> Here's the applicable code:
> 
>          if ($extent['x1'] && $extent['y1'] &&
>              $extent['x2'] && $extent['y2']) {
>                  $map->setExtent($extent['x1'], 
> $extent['y1'], $extent 
> ['x2'], $extent['y2']);
> 
>                  $extent_obj = ms_newRectObj();
>                  $extent_obj->setExtent($extent['x1'], 
> $extent['y1'],  
> $extent['x2'], $extent['y2']);
>          }
> 
>          else {
>                  $extent_obj = ms_newRectObj();
>                  $extent_obj->setExtent ($map->extent->minx, $map- 
>  >extent->miny, $map->extent->maxx, $map->extent->maxy);
>          }
> 
> 
> $max_extent_obj = ms_newRectObj();
> $max_extent_obj->setExtent (7510802, 548620, 7827464, 783920);
> 
> $zoom_factor = -4;
> $map->zoompoint($zoom_factor,$point_obj,$map->width,$map->height, 
> $extent_obj,$max_extent_obj);
> 
> 
> ------------------------
> Nostalgia isn't what it used to be.
> 



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