[Chameleon] ka-Map: new open source project
Ken Sanderson
ken at rockies.ca
Tue May 17 17:40:33 EDT 2005
Looks great, very fast.
Is there a 'powered by' graphic like for ka-Map but for chameleon?
Ken
Paul Spencer wrote:
> ka-Map: new open source project
> ===============================
>
> http://ka-Map.maptools.org/
>
> DM Solutions Group is pleased to annouce the release of a new MapTools
> open source project aimed at the growing interest in highly interactive,
> javascript mapping applications based on MapServer. Here are some
> details ...
>
> ka-Map provides many of the features that one should expect in a
> state-of-the-art web-mapping application.
>
> Features include:
>
> * tile-based continuous panning
>
> * no page reloading
>
> * keymap, legend and scalebar
>
> * zoom in/zoom out
>
> * keyboard navigation
>
> * sliding effects for panning on double click (ok, that one's for fun!)
>
> We have also implemented some advanced features that are more in tune
> with the MapServer community's needs:
>
> * configuration can include multiple map files with different extents,
> image formats, and scales for each map file. Client side interface can
> include the ability to change between map files
>
> * ability to have layer visibility controls by drawing each GROUP as a
> separate HTML layer on the client side
>
> * ability to use HTML legend template to build more advanced layer controls
>
> * flexible tile caching system
>
> * separation of the javascript logic from the HTML page to provide an
> API with which to build your applications
>
> ka-Map is built on AJAX principles and uses the XmlHttpRequest object to
> communicate with the server, providing a much more responsive user
> interface. The server side is implemented using PHP/MapScript (what
> else!) but could easily be replaced with anything that would spit out
> the equivalent javascript in response to the various requests.
>
> ka-Map uses cached tiles generated on demand by drawing much larger map
> images and slicing them up. The caching mechanism is currently quite
> simplistic and could not handle large data projects, but it is
> definitely sufficient for getting started. There are issues with this
> kind of tile generation, but it is almost essential for performance
> given the current state of the art.
>
> ka-Map is aiming to be an API for developing mapping applications. As
> such, we are hoping it will be picked up by, and integrated into, some
> of the other open source projects such as MapBender, ZMapServer,
> GeoServer, and (of course) Chameleon.
>
> The home of ka-Map is:
>
> http://ka-Map.maptools.org
>
> Downloads and CVS are not quite ready, but you can try out the interface
> by visiting our first public site based on this technology (basic
> features only in this one):
>
> http://maps.dmsolutions.ca/
>
> Subscribe to the user list to find out when downloads and CVS access are
> available, and also to participate in the ongoing development and
> testing of this new technology.
>
> http://lists.maptools.org/mailman/listinfo/ka-map-users
>
> We are hoping this project will engage the MapServer community's
> interest and gain momentum from user contributions. Please join up and
> start contributing if you are interested in this technology!
>
> Sincerely,
>
> Paul
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