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<TITLE>RE: [mapserver-users] Zoom to extents - NOT</TITLE>
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<P><FONT SIZE=2>A guess - your zoom variable is set to 2 or your zoomdir is set to 1 with a zoomsize of 2</FONT>
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<P><FONT SIZE=2>As part of your zoomall function you need to "handle" this (e.g., set zoom = 0 or zoomdir = 0)</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Murray, Ross [<A HREF="mailto:rmurray@NRCan.gc.ca">mailto:rmurray@NRCan.gc.ca</A>]</FONT>
<BR><FONT SIZE=2>Sent: Monday, October 21, 2002 8:05 AM</FONT>
<BR><FONT SIZE=2>To: 'mapserver-users@lists.gis.umn.edu'</FONT>
<BR><FONT SIZE=2>Subject: [mapserver-users] Zoom to extents - NOT</FONT>
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<P><FONT SIZE=2>I am very new to MapServer and would appreciate any words of encouragement</FONT>
<BR><FONT SIZE=2>you may provide before I am prematurely old.</FONT>
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<P><FONT SIZE=2>I have a button on my HTML form called "zoomtoextents". There are seperate</FONT>
<BR><FONT SIZE=2>buttons allowing the user to zoom in or zoom out to explore the image. The</FONT>
<BR><FONT SIZE=2>theory was that at some point they may wish to see the entire map again, so</FONT>
<BR><FONT SIZE=2>they should be able to do so by a single click of a button. The code I wrote</FONT>
<BR><FONT SIZE=2>was:</FONT>
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<P><FONT SIZE=2>function zoomall() {</FONT>
<BR><FONT SIZE=2> document.forms[0].imgext.value = "[allext]" ;</FONT>
<BR> <FONT SIZE=2>document.forms[0].submit();</FONT>
<BR><FONT SIZE=2> }</FONT>
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<P><FONT SIZE=2>where "[allext]" is a constant that holds the bounding latitude/longitude</FONT>
<BR><FONT SIZE=2>values of the map area (the value comes from a database and is set before</FONT>
<BR><FONT SIZE=2>the mapserv.exe is called).</FONT>
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<P><FONT SIZE=2>Problem:</FONT>
<BR><FONT SIZE=2> No matter how much (or little) the image is zoomed, clicking</FONT>
<BR><FONT SIZE=2>"zoomtoextents" returns an image at exactly half the maximum scale. For</FONT>
<BR><FONT SIZE=2>example, when one of my sample maps loads for the first time, its extents</FONT>
<BR><FONT SIZE=2>([allext]) are the bounding lat/long as described above and the scale is 1</FONT>
<BR><FONT SIZE=2>to 500000. If I zoom in by any amount then click "zoomtoextents" I get a map</FONT>
<BR><FONT SIZE=2>at 1 to 250000.</FONT>
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<P><FONT SIZE=2>Go Figure?</FONT>
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<P><FONT SIZE=2> <<Murray, Ross.vcf>> </FONT>
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