[mapguide-users] Re: How to rotate the map??

Bob Basques Bob.Basques at ci.stpaul.mn.us
Tue Jun 22 11:14:58 EDT 2010


Gordon, 

Do you have any sample output for this projection "trick"?  It sounds like something I've been after for a few years now, and for the same use as you, with PROJ. 

bobb 




>>> GordonL <gordon.luckett at arrowgeomatics.com> wrote:


Hi, about 12 years or so ago, I came up with a trick for the old MapGuide..I
would create a coordinate system using the Oblique Sterographic with
OSTEROUS coordinates with WGS84.
"Gord's Coords" they called it.

You can set the parameters such as:

      <Projection Code="OSTEROUS">
        <LatitudeOfOrigin>49.2124055555556</LatitudeOfOrigin>
        <LongitudeOfOrigin>-122.917591666667</LongitudeOfOrigin>
        <FalseEasting>506001.915</FalseEasting>
        <FalseNorthing>5451071.504</FalseNorthing>
        <MapScale>1</MapScale>
        <ScaleReductionFactor>1</ScaleReductionFactor>
        <CombinedScaleFactor>1</CombinedScaleFactor>
        <UnitsCode>METER</UnitsCode>
        <UnitsScaleFactor>1</UnitsScaleFactor>
        <P1>-39.5</P1>

The most important part was the P1 parameter (or rotation).  

I used this technique for printing with the Dynamic Authoring Toolkit.  I
have defined this in Autodesk Map 3D and ported the CSD files over to
MapGuide in the past, but I would love to the PROJ WKT definition for this
if anyone has it...


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