[Mapserver-users] Problems with NQUERY and MapServer crash

Thu May 29 03:54:53 PDT 2003

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Hi,

I have an application that is working fine using MODE=QUERY where the
user selects a point on the map and the nearest object is returned.

However when I try and change this so that a list of objects are
returned within a box I am having no success.

An example call is given below - this should definitely contain records
- I have seen other people having similar problems on the list group -
but I have not been able to find a reply.

http://localhost/scripts/mapserv.exe?map=c:\inetpub\wwwroot\mapserver\ES
DM.map&MODE=NQUERY&IMGSHAPE=12 60 156 60 156 204 12 204 12
60&mapext=171131.25 203531.25 180318.75 212718.75

Returns:

msQueryByShape(): Search returned no results. No matching record(s)
found.

I have tried the same with MAPSHAPE

If I add &LAYERS=SurveyEvents or &QLAYER=SurveyEvents to the above URL I
get a standard MS Crash dialog (I'm running on XP)

I have tested on both Mapserver 3.63 and the current development copy -
but with the same results each time.

My SurveyEvents layer is a MapInfo file - but this shouldn't make any
difference should it ?

Can I clarify should:

1)       IMGSHAPE should have pixel parameters?

2)       MAPSHAPE - as an alternative - have map co-ordinates ?

3)       Can anyone give me a working example call - and any other
pointers ?

4)       Am I doing something obviously wrong ?

Many Thanks

James

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<div class=3DSection1>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I have an application that is working fine using =
MODE=3DQUERY
where the user selects a point on the map and the nearest object is =
returned.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>However when I try and change this so that a list of =
objects
are returned within a box I am having no success.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>An example call is given below – this should =
definitely
contain records – I have seen other people having similar problems =
on the
list group – but I have not been able to find a =
reply.</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>http://localhost/scripts/mapserv.exe?map=3Dc:\inetpub\=
wwwroot\mapserver\</span></font><font
 size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>ESDM</span></font><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'>.map&MODE=3DNQUERY&I=
MGSHAPE=3D12
60 156 60 156 204 12 204 12 60&mapext=3D171131.25 203531.25 =
180318.75
212718.75</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Returns:</span></font></p>

msQueryByShape(): Search returned no results. No matching =
record(s)
found.

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> </span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>I have tried the same with MAPSHAPE</span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> </span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>If I add &LAYERS=3DSurveyEvents or =
&QLAYER=3DSurveyEvents to the above
URL I get a standard MS Crash dialog (I’m running on =
XP)</span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> </span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>I have tested on both Mapserver 3.63 and the current development =
copy –
but with the same results each time.</span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>My SurveyEvents layer is a MapInfo file – but this =
shouldn’t
make any difference should it ?</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Can I clarify should:</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal =
style=3D'margin-left:36.0pt;text-indent:-18.0pt'><font size=3D2
face=3DArial><span style=3D'font-size:10.0pt;font-family:Arial'>1)<font =
size=3D1
face=3D"Times New Roman"><span style=3D'font:7.0pt "Times New =
Roman"'>      
</span></font></span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>IMGSHAPE should have pixel =
parameters?</span></font></p>

<p class=3DMsoNormal =
style=3D'margin-left:36.0pt;text-indent:-18.0pt'><font size=3D2
face=3DArial><span style=3D'font-size:10.0pt;font-family:Arial'>2)<font =
size=3D1
face=3D"Times New Roman"><span style=3D'font:7.0pt "Times New =
Roman"'>      
</span></font></span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>MAPSHAPE – as an alternative – =
have map
co-ordinates ?</span></font></p>

<p class=3DMsoNormal =
style=3D'margin-left:36.0pt;text-indent:-18.0pt'><font size=3D2
face=3DArial><span style=3D'font-size:10.0pt;font-family:Arial'>3)<font =
size=3D1
face=3D"Times New Roman"><span style=3D'font:7.0pt "Times New =
Roman"'>      
</span></font></span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>Can anyone give me a working example call =
– and
any other pointers ?</span></font></p>

<p class=3DMsoNormal =
style=3D'margin-left:36.0pt;text-indent:-18.0pt'><font size=3D2
face=3DArial><span style=3D'font-size:10.0pt;font-family:Arial'>4)<font =
size=3D1
face=3D"Times New Roman"><span style=3D'font:7.0pt "Times New =
Roman"'>      
</span></font></span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial'>Am I doing something obviously wrong =
?</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Many Thanks</span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>James</span></font></p>

<p><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'> </span></font></p>

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