[mapserver-users] How do they do that???

[Stephen Lime]

Well I can speak to landview since I wrote it. In short it uses a small applet to do the display and mouse event handling and manages all of the coordinate information using a javascript library. Then I use a public method of the applet to swap the image being displayed. The image urls are actually calls to the MapServer (mode=map). This could also be done using DHTML (i.e. layers) IF you use frames or a single page design with absolute positioning of layers. Absolute positioning is fine in a frame with nothing else or if you have a design with nothing that will change size to the left and above your map. Personally I like the freedom the applet gives you.

All of my code is available on request, but it really needs more documentation (like everything else).

Steve

Stephen Lime
Data & Applications Manager

Minnesota DNR
500 Lafayette Road
St. Paul, MN 55155
651-297-2937

>>> "Hankley, Chip" <Chip.Hankley at GASAI.Com> 11/21/01 10:33AM >>>
I've seen a few MapServer apps where, after a navigation event, the entire
page doesn't reload... only the map window.

for example:
http://maps.dnr.state.mn.us/landview/ 
http://144.92.235.164/orthofinder/ 

How do they do that? Is this using Java? One site uses frames and the other
doesn't...

TIA

Chip Hankley