[Chameleon] Contexts

Ken Sanderson ken at rockies.ca
Mon Sep 27 19:28:22 EDT 2004

I have been goofing around with contexts today and it would do what I
need if I was only using WMS layers, as the context saves visibility
status as well as extents. I had a couple other questions about

1) Whats the real difference between Download a Context and Extract a
Context? Seems one puts it right to your hard drive while the other just
provides a URL for it, but the URL is to a file in a temp folder that
isnt likely to be around that long. Is there a reason to use Extract vs

2) Is it feasible to combine a context with your current map? Right now
if you upload a context it replaces the map you have with the new one.
Is it feasible that you could add the layers in a context to your
existing map so that you would get a combination of the two in your map
window instead of just the newly loaded context?



-----Original Message-----
From: chameleon-bounces at lists.maptools.org
[mailto:chameleon-bounces at lists.maptools.org] On Behalf Of Paul Spencer
Sent: September 26, 2004 1:31 PM
To: Ken Sanderson
Cc: chameleon at lists.maptools.org
Subject: Re: [Chameleon] Contexts and SLD's Widgets


the Context widgets are to work with Web Map Contexts, an OGC spec for 
portable map files ... it only works with WMS layers.  SLD is also an 
OGC spec, this one defines styling information for WMS layers.

Neither set of widgets will help you with that.  There are no other 
widgets that do that, either.  You will likely need to build something 
to do this.



Ken Sanderson wrote:
> What are the Context and SLD widget/tools for, ie what do they do?
> I am looking for a way to save a current extent, visible layers, etc 
> so that a user can come back later and start where he left off, would 
> either of these be good for that? Is there any other widgets that 
> would work for this type of thing?
> Thanks,
> Ken
> _______________________________________________
> Chameleon mailing list
> Chameleon at lists.maptools.org 
> http://lists.maptools.org/mailman/listinfo/chameleon

|Paul Spencer                           pspencer at dmsolutions.ca   |
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|

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