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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=031564023-16112007>Hi,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=031564023-16112007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=031564023-16112007>if you want to use SphericalMercator with Google Maps,
then you can only use the resolutions of Google Maps. They deliver their maps
only in this resolutions.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=031564023-16112007></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=031564023-16112007></SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=031564023-16112007><!-- Converted from text/plain format -->
<P><FONT size=2>Mit freundlichen Grüssen<BR><BR>Arnd Wippermann<BR><A
href="http://gis.ibbeck.de/ginfo/">http://gis.ibbeck.de/ginfo/</A><BR><BR></FONT></P></SPAN></FONT></DIV>
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</DIV>
<DIV dir=ltr align=left><FONT face=Tahoma size=2><B>Von:</B>
users-bounces@openlayers.org [mailto:users-bounces@openlayers.org] <B>Im Auftrag
von </B>Linda Rawson<BR><B>Gesendet:</B> Freitag, 16. November 2007
15:18<BR><B>An:</B> users@openlayers.org<BR><B>Betreff:</B> [OpenLayers-Users]
Changing Resolution in Spherical Mercator<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>I am using the following to define my map:</DIV>
<DIV> </DIV>
<DIV>options = {<BR> projection:
"EPSG:900913",<BR> units: "m",<BR>
maxResolution: 156543.0339,<BR> numZoomLevels:
18,<BR> maxExtent: new OpenLayers.Bounds(-20037508,
-20037508,<BR>
20037508, 20037508.34)<BR>};</DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>map = </FONT><FONT color=#0000ff size=2>new</FONT><FONT
size=2> OpenLayers.Map(</FONT><FONT color=#800000 size=2>'map'</FONT><FONT
size=2>,options);</FONT></DIV>
<DIV>
<P><FONT size=2>Then my layer:</FONT></P>
<P><FONT size=2>var sat = new
OpenLayers.Layer.Google(<BR>
"Google",<BR>
{'sphericalMercator': true}<BR> );</FONT></P>
<P><FONT size=2>What the sphericalMercator true does is run the </FONT></P>
<P>initMercatorParameters: function()
{<BR> // set up properties for
Mercator - assume EPSG:900913<BR>
this.RESOLUTIONS = [];<BR> var
maxResolution = 156543.0339;<BR>
for(var zoom=0; zoom<= this.MAX_ZOOM_LEVEL; ++zoom)
{<BR>
this.RESOLUTIONS[zoom] = maxResolution / Math.pow(2,
zoom);<BR>
}<BR> this.units =
"m";<BR> this.projection =
"EPSG:900913";<BR> }, </P>
<P>The maxResolution of 156543.0339 is based on (20037508.34 + 20037508) /
256.</P>
<P>I need a different Resolution but I still want the forward and inverse
mercator functions to work. Where are all the different places to change
the resolution? I need it based on a tile that is not 256 in size. I
have tried changing this in initMercatorParameters, the map, but It still does
not seem to play nice. </P>
<P>Thanks,</P>
<P>Linda Rawson</P></DIV></BODY></HTML>