ka-Map: new open source project

[Paul Spencer]

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