trying to get dbox working...

[Steve Lime]

Just to clear things up - the variables [BOX], [DRAG] and [PROGRAM] are not MapServer CGI variables. That is, MapServer knows nothing about them. Remember any variable passed into the CGI can also be retrieved using [variable] syntax. So, in this case the variables are being used by the web application to maintain state and/or ease configuration. That's the case with the map_ vars as well. The authors wanted to simplify configuration by concentrating edits to one file. That's how the main Itasca demo works too. Unfortunately the ease of configuration often causes more confusion than it's worth.

With the cms-based MapServer site there are certainly opportunities for anyone and everyone to contribute to the docs!

Steve

>>> "piero.cavalieri at gmail.com" <piero.cavalieri at GMAIL.COM> 04/23/06 2:54 AM >>>
I never see [BOX], which should be "true" or "false" (it was so in  the 
older version and hardcoding "true" should work).
I never see [DRAG] (as it's not documented, as [BOX]).
[PROGRAM] it's not documented, but I fell to remember I saw it in itasca 
demo application last year (when I set up it)
[map_web_imagepath] and [map_web_imageurl] are right, see "Changing map 
file parameters via a form or a URL" (MAP object in .map file has WEB 
child object, which has IMAGEPATH child object; u colud specifiy 
everything in map file in tis manner, for example MAP_LEGEND_SIZE= 140 
130, passing it to cgi u can change legend size dinamically).
[ZOOMSIZE] is correct, it's the last parameter before "ROSA-Applet 
specific".


Personally I think cgi reference it's not too much well documented, 
especially for a beginner. I had basic cgi working (less or more) with:
-to cgi ("input"): IMGEXT, IMGXY, IMGBOX
-output (in template tag): MAPEXT wich value become that of IMGEXT when 
you give to the url the next time, and so on.

Other paramters are intuitive, but I had to do a lot of try and error to 
have something working and I'm still a bit confused. Then one ask 
himself why there is not BBOX for example (among others), which is OGC 
(I think)...
I repeat myself: cgi reference should be documented well, specifiing 
that in reference there are only Mapserver specific (if so) and not OGC 
variables, and doing at the reference end, a bit of examples for most 
common situations (it should be only one or two pages more...)

Cheers
     Piero


Date:    Fri, 21 Apr 2006 09:38:30 -0500
From:    John Cole <john.cole at UAI.COM>
Subject: trying to get dbox working...
MIME-Version: 1.0
Content-Type: text/plain

I'm trying to get the dbox demo working on my data, but the page from
http://www.greenwoodmap.com/mapserver/Ottawa-workshop/presentation/demo3_dBo
x-src.html seems to use some template tags that aren't working (and are not
in the template file reference).

Among these are [box], [drag], [program], [map_web_imagepath],
[map_web_imageurl], and [zoomsize].

Is there a working dbox demo I could download? :-) or get some hints as to
how to get this one to work?

I'm using mapserver 4.8.1. I think I have all of the js files needed, but
I'm getting a js error, box is not defined, on
        main.box = [box];

Thanks,

John Cole
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