[mapserver-users] PHP ZoomPoint

[ANDREW WOOLEY]

Folks,

I am getting what seems to me to be strange results on my zoompoint method.  I feel like I have followed the docs pretty closely and have even tried an example that I found in the email archives, but still have yet to get a useable result.

I am using MapScript Version (Aug 1, 2001), a nightly build and when executing the code: 

$ptClicked = ms_newPointObj(); 
$ptClicked->setXY($mainmap_x,$mainmap_y); 

$extent = ms_newRectObj();
$extent->setextent($map->extent->minx, $map->extent->miny, $map->extent->maxx, $map->extent->maxy); 

$map->zoompoint(2, $ptClicked, 600, 600, $extent); 

When I echo the extent minx, etc. it gives reasonable coordinates for the map extent (1800193, 825044, 2115496, 542882), however, after this code executes and I echo the new extent, I get good values for some of the coordinates but not others (1877442.235, -78702.92, 2035093.735, 78702.92).  Can someone explain to me what I am doing wrong and why the negative values show up?  Thanks.




Andrew Wooley
GIS Operations Manager
Mountainland Association of Governments
Orem, UT

phone:  801.229.3844
fax:       801.229.3801
email:   awooley at mountainland.org