You could try plotting your query point on the map to help visualize things I
suppose. Perhaps the PixelToGeo function is off.
One things I'd try is taking the output from that function and using it to
formulate
a query to the CGI. That would allow you to compare your results against another
source. You can do this at the command line. The form would be:
mapserv
"QUERY_STRING=map=your.map&mapxy=yourx+youry&qlayer=yourlayer&mode=query"
Steve
>>> shurhen <[EMAIL PROTECTED]> 09/08/08 8:25 AM >>>
Hello!
Why queryByPoint returns neighbour object instead of clicked object?
For several days I tried to solve this problem, but things are still
where they started. Sometimes selection was correct, sometimes
incorrect. I've noticed if I click in the middle of the object - very
often selection was incorrect (it was highlighted neighbour object),
but if if I click nearer to the vertex - right results go more often.
May be something wrong with projections?
Here is my code example that I've gathered from many sources
pointObj a_geopointObj = PixelToGeo(m_map, e);
a_layer.toleranceunits = (int)MS_UNITS.MS_PIXELS;
double a_tolerance = -1;
bool a_foundflag = false;
while (!a_foundflag && (a_tolerance < 100))
{
m_map.prepareQuery();
a_layer.queryByPoint(m_map, a_geopointObj, mapscript.MS_SINGLE,
a_tolerance);
using (resultCacheObj results = a_layer.getResults())
{
textBoxSRCC1.Text = a_tolerance.ToString();
a_foundflag = results.numresults > 0;
if (!a_foundflag)
a_tolerance++;
}
}
What I have missed?
And then some, I don't understand why tolerance values "-1" does not
work? Documentation says: "-1" is for MS_PIXELS
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