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Finding Streets by coordinates
This is a discussion on Finding Streets by coordinates within the Development forums, part of the MapPoint 2006/2009 Discussion category; Dear specialists, I have coordinates (wsg84) and want to get the Adress (Town, Street and so on). How is it ...
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02-02-2008
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 Finding Streets by coordinates I have coordinates (wsg84) and want to get the Adress (Town, Street and so on). How is it possible with MapPoint? I know how to get a location object. But how can I find out Town, Street from this object? Any help is welcome Best regards Peter         |
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02-02-2008
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| Re: Finding Streets by coordinates
Hi Peter, Look up the ObjectFromPoint method. Mike Mattys |
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02-03-2008
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| Re: Finding Streets by coordinates
Hi Mike, Thank you for quick answer and the Tip. I will try to use it and then we will see what will happen. Best regards Peter  |
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02-04-2008
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| Re: Finding Streets by coordinates
Note that ObjectsFromPoint takes screen coordinates, not latitudes and longitudes. The process you might want to follow is: - Form a Location with your desired lat/lon - Move to that location - Find the screen X,Y coordinates for that location - Call ObjectsFromPoint for that X,Y. In C++, you might call the following code. This is mostly from my head and hasn't been tested. Your class names may also differ slightly. Code: CString GetStreetName(double dLat, double dLon, double dAlt)
{
CMPMap thisMap;
CMPLocation locTest;
CMPLocation locTemp;
CMPFindResults mpFindResults;
CMPStreetAddress saddrLocation;
long lXPos;
long lYPos;
CString strResult = _T(""); // default
int nFound;
VARIANT vItem;
thisMap = m_mapMain.GetActiveMap();
locTest = thisMap.GetLocation(dLat, dLon, dAlt);
locTest.GoTo();
lXPos = thisMap.LocationToX(locTest);
lYPos = thisMap.LocationToY(locTest);
if ((lXPos != -1) && (lYPos != -1)) {
mpFindResults = thisMap.ObjectsFromPoint(lXPos, lYPos);
nFound = mpFindResults.GetCount();
if (nFound > 0) {
locTemp = mpFindResults.GetItem(&vItem);
saddrLocation = locTemp.GetStreetAddress();
if (saddrLocation.m_lpDispatch != NULL) {
strResult = saddrLocation.GetValue();
}
}
}
return strResult;
}
Dave Last edited by 208_Fireball; 02-04-2008 at 07:44 PM. |
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02-05-2008
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| Re: Finding Streets by coordinates
Hi Dave, THank you. What you wrote is exectly what I do (in VB6). Is there a possibility to get the same result without displaing the chart? That means that I want to have a small software with input of the coordinates and output the adresse (city, street and so on) and no chart is shown. Best regards Peter  |
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02-05-2008
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| Re: Finding Streets by coordinates
Hi, Yes, you can set the active map's Visible to false. it also will speed up.
__________________ rgds, Wilfried Mestdagh www.mestdagh.biz MapPoint coding demo Order MapPoint 2009 with Routing and User Tools Spreadsheet |
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| Tags |
| coordinates, finding, streets |
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