Zooming to shapes found by queryByAttributes

[Volkan Ulukut]

void zoomrectangle(rectObj oPixelExt, int nImageWidth, int nImageHeight,
         rectObj oGeorefExt) 
Parmeters are :
  - oPixelExt (rect object) : Pixel Extents, with (0,0) at the top-left
          The rectangle contains the coordinates of the LL and UR
coordinates in pixel.

Shape's bounds are georef coordinates. Zoomrectangle takes pixel extents as
parameter.
When i try to use shape's bounds anyway here's the result:
Fatal error: [MapServer Error]: msCalculateScale(): Invalid image extent,
minx=-31.418490, miny=75.002064, maxx=-31.418490, maxy=75.002064.
-----Original Message-----
From: tesciltu at host.tescilturk.com [mailto:tesciltu at host.tescilturk.com] On
Behalf Of Umberto Nicoletti
Sent: Monday, June 12, 2006 3:45 PM
To: Volkan Ulukut
Cc: MAPSERVER-USERS at lists.umn.edu
Subject: Re: [UMN_MAPSERVER-USERS] Zooming to shapes found by
queryByAttributes

Try to zoomRectangle using the shape's bounds.

HTH,
Umberto

On 6/12/06, Volkan Ulukut <vulukut at tescilturk.com> wrote:
>
>
>
>
> Hey list;
>
> I'm having trouble zooming to the exact location of the shape after doing
a
> search with queryByAttributes. I'm trying to use zoomrectangle and
zoomscale
> but they both need pixel position. So i try to convert my georef
coordinates
> to pixel coordinates. I believe that was successful too, but the problem
is
> that the shape is too small (a street in the worldmap) and the pixel i
> calculate is not an integer value. The zoom actually happens but not
exactly
> on the shape just a bit miles west and north. I tried to workaround this
by
> zooming step by step. By that i mean zooming to that location a little
then
> zooming to the centre till i get to the shape. But that won't give the
same
> result on every search as you may guess. I'm stuck now cause i can't zoom
to
> the right place with pixel coordinates. Is there any way that i can zoom
> with georef coordinates(lat/long)?