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List:       postgis-users
Subject:    [postgis-users]
From:       Damian Schroder <map_surfer () yahoo ! com>
Date:       2003-11-25 16:52:03
Message-ID: 20031125165203.52966.qmail () web80701 ! mail ! yahoo ! com
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follow-up:
The scenario mention in the previous message only happens when I mix shapefile layers \
with postgis layers. If all layers are turned off except the postgis layer, the \
drawquery() function works perfectly regardless of the bbox size. I am still \
searching for any info on how the drawquery() interacts with the layers and why it \
fails with different data types. 


Damian Schroder <map_surfer@yahoo.com> wrote:
Dear list, 
 
I have researched this high and low and come up empty. Please help.
 
In my map application, the drawquery() function fails when a bounding box is is below \
a certain size. Currently, my map is in Geographic (dd). The drawquery() fails when \
the the hieght or width of the bbox is below 1.5 degrees (at full extent the height \
and width of the bbox is 115 pixels, mapsize is 450x450 pixel, so it is not a tiny \
rectangle). The drawquery() only fails with postgis layers. When it does fail I still \
receive query results. If I draw a bbox large enough, everything works perfectly.   
I am using:
mapserver 4.0.1
postgres 7.3.3
postgis 0.7.5
rosa applet
Mapscript/PHP
 
Is there some tolerance control I neet to edit? Is there coarse rounding with the \
pixel to geographic conversion with the drawquery() function?Any ideas or suggestion \
would be greatly appreciated.  
Thanks,
Damian Schroder



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[Attachment #3 (text/html)]

<DIV>
<DIV>follow-up:</DIV>
<DIV>The scenario mention in the previous message only happens when I mix shapefile \
layers with postgis layers. If all layers are turned off except the postgis layer, \
the drawquery() function works perfectly regardless of the bbox size. I am still \
searching for any info on how the drawquery() interacts with the layers and why it \
fails with different data types. <BR><BR><BR><B><I>Damian Schroder \
&lt;map_surfer@yahoo.com&gt;</I></B> wrote:</DIV> <BLOCKQUOTE class=replbq \
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> \
<DIV>Dear list, </DIV> <DIV>&nbsp;</DIV>
<DIV>I have researched this high and low and come up empty. Please help.</DIV>
<DIV>&nbsp;</DIV>
<DIV>In my map application, the&nbsp;drawquery() function fails when a bounding box \
is is below a certain size. Currently, my map is in Geographic (dd). The drawquery() \
fails when the the hieght or width of the bbox&nbsp;is below 1.5 degrees (at full \
extent the height and width of the bbox is 115 pixels, mapsize is 450x450 pixel, so \
it is not a tiny rectangle). The drawquery() only fails with postgis layers. When it \
does fail I still receive query results. If I draw a bbox large enough, everything \
works perfectly. </DIV> <DIV>&nbsp;</DIV>
<DIV>I am using:</DIV>
<DIV>mapserver 4.0.1<BR>postgres 7.3.3<BR>postgis 0.7.5</DIV>
<DIV>rosa applet</DIV>
<DIV>Mapscript/PHP</DIV>
<DIV>&nbsp;</DIV>
<DIV>Is there some tolerance control I neet to edit? Is there coarse rounding with \
the pixel to geographic conversion with the drawquery() function?Any ideas or \
suggestion would be greatly appreciated.</DIV> <DIV>&nbsp;</DIV>
<DIV>Thanks,</DIV>
<DIV>Damian Schroder<BR></DIV>
<P>
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