Resubmit Question: ms4w, variable substitution, mapfile EXTENT object attr

[Matt Pettis]

line 8 is the 'SIZE' line i've included... i'll dig it up 

________________________________

From: Fawcett, David [mailto:David.Fawcett at state.mn.us] 
Sent: Wednesday, December 06, 2006 1:10 PM
To: Pettis, Matthew (TLR Corp); MAPSERVER-USERS at lists.umn.edu
Subject: RE: [UMN_MAPSERVER-USERS] Resubmit Question: ms4w, variable
substitution, mapfile EXTENT object attr


Matt, 
 
Can you post the text of your map file?  What is in line 8?
 
David.

	-----Original Message-----
	From: UMN MapServer Users List
[mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of Matt Pettis
	Sent: Wednesday, December 06, 2006 12:37 PM
	To: MAPSERVER-USERS at LISTS.UMN.EDU
	Subject: [UMN_MAPSERVER-USERS] Resubmit Question: ms4w, variable
substitution, mapfile EXTENT object attr
	
	
	No one answered this question, so I am resubmitting:
	----------------
	Hi,

	

	I am trying to write a mapfile that will use javascript to
dynamically sent EXTENT values to a .map file via POST parms.
Concretely, when I select a county in MN from a dropdown, I want to send
the appropriate values for the EXTENT bbox so that the selected county
is rendered in it's specific bbox.

	

	The beginning of my mapfile looks like this:

	---

	MAP

	IMAGETYPE PNG

	EXTENT %xmin% "%ymin%" "%xmax%" "%ymax%"

	SIZE 880 660

	...

	---

	

	the url i issue is:

	
http://localhost/cgi-bin/mapserv.exe?map=C%3A%5Cms4w%5CApache%5Chtdocs%5
Ctest_postgis2%5CDynSQL_ByCounty%5Cmap.map&map_web_imagepath=C%3A%5Cms4w
%5CApache%5Chtdocs%5Ctmp%5C&mode=map&xmin=439430.71875&ymin=4959166&xmax
=486045.78125&ymax=5010473.5&coid=27
<http://localhost/cgi-bin/mapserv.exe?map=C%3A%5Cms4w%5CApache%5Chtdocs%
5Ctest_postgis2%5CDynSQL_ByCounty%5Cmap.map&map_web_imagepath=C%3A%5Cms4
w%5CApache%5Chtdocs%5Ctmp%5C&mode=map&xmin=439430.71875&ymin=4959166&xma
x=486045.78125&ymax=5010473.5&coid=27> 

	

	

	the error i get is:

	getDouble(): Symbol definition error. Parsing error near
(%):(line 7) 

	

	line 7 is the EXTENT line.

	

	So, my questions are:

	1. Does MapServer support variable substitition for extent
values? If so, what am i doing wrong? If not, how do I dynamically set
the extent for dynamically selected polygons with different bboxes?

	

	2. Is there a better way to set the bbox rather than send it
precalculated values in a GET? It seems natural that I should be able to
leave the EXTENT line off and a default of the smallest bounding box
that works for the returned geometry would be returned as a default.

	

	tia,

	Matt

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