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<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff size=2>Bruno,
</FONT></SPAN></DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff size=2>The
Itasca demo is actually based on Itasca County Minnesota.
</FONT></SPAN></DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff size=2>The
data is in the projection UTM Zone 15 (north). The epsg code is
26915. </FONT></SPAN></DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff size=2>The
units for UTM are meters. In UTM, there is a Northing value measured from
the equator and an Easting value measured from a central meridian. A
'false easting' of 500,000 meters is applied to ensure that all values are
positive. </FONT></SPAN></DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff size=2>Do a
Google on UTM projections for more info. </FONT></SPAN></DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=732594819-03082006><FONT face=Arial color=#0000ff
size=2>David.</FONT></SPAN></DIV>
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<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> UMN MapServer
Users List [mailto:MAPSERVER-USERS@LISTS.UMN.EDU] <B>On Behalf Of </B>Bruno
Patini Furtado<BR><B>Sent:</B> Thursday, August 03, 2006 2:33 PM<BR><B>To:</B>
MAPSERVER-USERS@LISTS.UMN.EDU<BR><B>Subject:</B> [UMN_MAPSERVER-USERS] Demo,
Itasca coordinate system<BR><BR></FONT></DIV>Hi,<BR>I'm a bit confused with
the EXTENT property of the mapfile of MapServer Demo, the one that shows the
Itasca village (<A
href="http://en.wikipedia.org/wiki/Itasca%2C_Illinois">http://en.wikipedia.org/wiki/Itasca%2C_Illinois
</A>). As it's possible to see on wikipedia page the coordinates of this place
are 41.974678, -88.018513, being the X a negative number, as it's expected to
all the USA country. <BR><BR>My question is: Why the EXTENT has two points of
whose X coordinates on both are positive numbers? Which coordinate system is
being used? <BR><BR><BR>Thanks for your time.<BR><BR>-- <BR>"Minds are like
parachutes, they work best when open."<BR><BR>Bruno Patini Furtado<BR>Software
Developer<BR>webpage: <A href="http://bpfurtado.net">http://bpfurtado.net
</A><BR>software development blog: <A
href="http://bpfurtado.livejournal.com">http://bpfurtado.livejournal.com</A>
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