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Lat/Lons of the Corners of a Rectangle Object
This is a discussion on Lat/Lons of the Corners of a Rectangle Object within the MapPoint 2006/2009 Discussion forums, part of the Map Forums category; I see it's easy to get the center lat/lon and the Height and Width of a rectangle object, but I ...
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04-04-2008
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| Lat/Lons of the Corners of a Rectangle Object Do I just need to do some great circle distance calculation to get the corner lat/lon's (I could probably figure it out from here: Aviation Formulary V1.43) or is there any easier way? Eric
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04-04-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
Hi Eric, Hopefully, this will help ... Find latitude and longitude of map corners with VBA Mike Mattys |
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04-07-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
Just to complicate things, the rectangle is oriented relative to the screen - not the North Pole! So as the user pans the map, the rectangle corners will move. As well as getting the locations and finding their coords, you can get the width & height of the rectangle, and extrapolate the edges & corners out. This would give a north pole oriented rectangle. Ie. it doesn't change, but it might not exactly match what the user sees. Richard
__________________ Winwaed Software Technology LLC http://www.winwaed.com See http://www.mapping-tools.com for MapPoint Tools Pre-Order MapPoint 2009 today: http://www.mapping-tools.com/mappoint2009 |
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04-08-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
Hi Richard, Since the map itself is pointed northward at lower altitudes, the corners will also point northward or negligably different. Looking at the sphere from higher elevations, I don't see where one could obtain any -rectangle- that has either eastern or western corners that line up with the north pole. A rhombus, perhaps?  Mike Mattys |
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04-08-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
I guess it's best to try to use the Queryshape method when appropriate.. I wonder if it returns different results depending on the zoom level..  I'll let you know what we find out.Eric
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04-09-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
Mike: There's also a rotational affect with MapPoint's map display. It is greater when you zoom out a bit. Richard
__________________ Winwaed Software Technology LLC http://www.winwaed.com See http://www.mapping-tools.com for MapPoint Tools Pre-Order MapPoint 2009 today: http://www.mapping-tools.com/mappoint2009 |
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04-09-2008
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| Re: Lat/Lons of the Corners of a Rectangle Object
Hi Richard, Yes, sir, there certainly is.  I wonder how this would look if the graticule sample was combined with the spinning globe sample. I guess I'll try it!  Mike Mattys |
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| Tags |
| corners, lat or lons, object, rectangle |
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| Programming MapPoint via .NET - MapPoint Articles - MP2K Magazine | This thread | Refback | 04-08-2008 06:30 PM | |
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