[maplab-users] Query map with PostGIS layer

[Mike Leahy]

All,

An update on this one:

I've tried using the Mapserver/Mapscript 4.1 currently available, and the 
problem is identical.  I also tried turning off warning/notice messages in 
PHP, but the WARNING text still appears after the table in the query results.  
I'm still not sure how this prevents the Rosa applet from displaying the 
image...perhaps the image itself is also corrupted somehow by these messages, 
and possibly Internet Explorer is able to ignore them (such that when I view 
the IMG_URL directly in IE, the image alone displays fine). 

BTW, Thanks Daniel and Paul re. the documentation sources.

Mike

Quoting Mike Leahy <mgleahy@golden.net>:

> Hello all,
> 
> I've just now been able to get maps working in MapLab, using PostGIS layers
> (PostGIS 0.7.5 in PostgreSQL 7.3.4-2, built in cygwin on WinXP).  The maps
> display fine, and if I do a point query, that also works fine.  However,
> there are two problems that occur when I query multiple objects (i.e., with
> a box query instead of a point).  First, and more important, is that the
> ROSA applet doesn't seem to like waiting for the map image.  If I go
> directly to the IMG_URL parameter for the Rosa applet, the image is there,
> and looks fine.  But the applet just gives me a white box, with the
> navigation controls visible.
> 
> Second, I get a series of warning messages in the query attributes, such as
> the following:
> 
> WARNING: BEGIN: already a transaction in progress WARNING: Closing
> pre-existing portal "mycursor" WARNING: BEGIN: already a transaction in
> progress WARNING: Closing pre-existing portal "mycursor" WARNING: BEGIN:
> already a transaction in progress WARNING: Closing pre-existing portal
> "mycursor" WARNING: etc...(I think there are two warnings for every row in
> the attributes table).  
> 
> I can turn off warnings in PHP, but that's already caused problems before
> when I was getting errors that I couldn't fix, when all I needed to see were
> the warnings sent from PostGIS.
> 
> Any suggestions?
> Mike
> 
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> 




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