[Manifold-l] Coordinate Weirdness

[Springfield Harrison]

Hello:

         Yes. that was the problem.  All traffic was on the Forum:

                         http://forum.manifold.net/Site/Thread.aspx?id=53356&reply=53405

         Thanks, though . . .



At 22/11/2007 04:08 PM Thursday, jburn_gis at cogeco.ca wrote:
>I think you'll find that the problem is a "local offset" problem.  Often 
>(I won't get into why) raster images are
>projected, and then offset to put them in the "right spot".  If this *is* 
>the case, then you should just have to
>"change" the projection of the component to whatever you want, but just 
>make sure that the check box for keeping local
>values (bottom of the change projection box) is not checked.  You should 
>see no actual change on the screen, but if you
>check your X(I)/Y(I) values, you'll see that they're probably different.
>
>Hope that helps.
>
>
> >
> >
> >
> > Hello Wizards:
> >
> >          I have an ECW image and several drawings, all NAD83, UTM 10N.  The
> > ECW was sent me georegistered and all drawings were referenced to it.  I
> > have generated several export files (shp, dxf) from my drawings which the
> > client cannot load properly (project).  I have discovered the following
> > upon importing my own exports:
> >     * files imported with the XML file available import with the correct
> > projection and datum.
> >     * files imported without the XML file and assigned NAD83/UTM "manually"
> > are not projected correctly.
> >     * changing the projection to Lat/Lon has no effect.
> >     * the wrong coordinates are in the range of -500 to 16,000.
> >          I don't believe I've ever seen the likes of this and am hard
> > pressed to guess what might be wonky.  I may have overlooked something
> > simple.  This is the latest Manifold release.
> >
> >          I've appended the XML file for reference for those who may be
> > familiar with the content.
> >
> >          Any thoughts would be appreciated . . . .
> >
> > <?xml version="1.0" encoding="UTF-8"?>
> > <data>
> >          <coordinateSystem>
> >                  <name>Universal Transverse Mercator - Zone 10 (N)</name>
> >                  <datum>North American 1983 (mean for CONUS)</datum>
> >                  <system>Transverse Mercator</system>
> >                  <unit>Meter</unit>
> >                  <majorAxis>6.378137000000000000000000e+006</majorAxis>
> > 
> <eccentricity>8.181919104281579200000000e-002</eccentricity>
> >                  <centerX>0.000000000000000000000000e+000</centerX>
> >                  <centerY>0.000000000000000000000000e+000</centerY>
> >                  <centerZ>0.000000000000000000000000e+000</centerZ>
> >                  <rotationX>0.000000000000000000000000e+000</rotationX>
> >                  <rotationY>0.000000000000000000000000e+000</rotationY>
> >                  <rotationZ>0.000000000000000000000000e+000</rotationZ>
> > 
> <scaleAdjustment>0.000000000000000000000000e+000</scaleAdjustment>
> >                  <scaleX>9.996000000000000400000000e-001</scaleX>
> >                  <localScaleX>1.000000000000000100000000e-001</localScaleX>
> >                  <scaleY>9.996000000000000400000000e-001</scaleY>
> >                  <localScaleY>1.000000000000000100000000e-001</localScaleY>
> > 
> <falseEasting>5.000000000000000000000000e+005</falseEasting>
> > 
> <localOffsetX>4.675800000000000000000000e+005</localOffsetX>
> > 
> <falseNorthing>0.000000000000000000000000e+000</falseNorthing>
> > 
> <localOffsetY>5.389200000000000000000000e+006</localOffsetY>
> >                  <centerLat>0.000000000000000000000000e+000</centerLat>
> >                  <centerLon>-1.230000000000000000000000e+002</centerLon>
> >          </coordinateSystem>
> > </data>
> >
> >
> >                             Spring Harrison
> >                                        Stellar GPS & Mapping
> >                                  103 - 9800 McDonald Park Road
> >                                         Sidney, B. C. Canada
> >
> >
> > _______________________________________________
> > Manifold-l mailing list
> > Manifold-l at lists.directionsmedia.net
> > http://www.directionsmedia.net/mailman/listinfo/manifold-l
> >
>
>--------------
>James Burn AScT
>
>
>--
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>22/11/2007 6:55 PM

                            Spring Harrison
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