[Mapserver-users] Zoom In to a defined area

[Palle Due Larsen]

You should name your <select> imgbox, not viewarea. Also separate your
your coordinates by +, not ,.

Best regards

Palle Due Larsen
Carl Bro GIS&IT


-----Original Message-----
From: "Jeff L." <nf10 at hotmail.com>
To: mapserver-users at lists.gis.umn.edu
Date: Mon, 01 Sep 2003 20:30:31 +0000
Subject: [Mapserver-users] Zoom In to a defined area

> Hi,
> 
> By knowing the map coordinates of a specific area (xMin, yMin, xMax
> and 
> yMax), i would like to zoom in to such area. I have a combo box with
> defined 
> areas to zoom in, i’m using CGI and JavaScript to change map extents,
> but no 
> success so far. My question would be how to pass the map extents and
> may be 
> the center of the image is also required to change? Here is my code
> snippet:
> ....
> 
> <SCRIPT LANGUAGE="JavaScript"><!--
> 
> function AreaSelected()
> {
>     if (document.forms[0].ViewArea.selectedIndex != 0 &&
> 	 document.forms[0].ViewArea.selectedIndex !=1)
>     	document.forms[0].submit();
> }
> 
> //--></SCRIPT>
> 
> <form method=GET action="[program]" name=myform>
> 
> ....
> 
> <SELECT NAME="ViewArea"  onChange="AreaSelected()">
> <OPTION>Go to</OPTION>
> <OPTION>- - - - - - - - - - - - - </OPTION>
> <OPTION VALUE="-180,45,180,90">Area 1</OPTION>
> <OPTION VALUE="-180,0,180,45">Area 2</OPTION>
> </SELECT >
> 
> ....
> 
> <input type="hidden" name="imgxy" value="299.5 299.5">
> <input type="hidden" name="imgext" value="[mapext]">
> ....
> </form>
> 
> 
> Any help is appreciated
> 
> Jeff Lacoste
> 
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