vectors by using many divs or layers to represent pixels and groups of
pixels options for drawing vectors client side include:
VML - (IE 5.0+ with the VML option installed)
SVG - (requires plugin from Adobe)
Flash - (requires Macromedia Flash plugin)
If you want your maps to be more accessible then draw the vectors server
side. There are graphic libraries and applications to assist you with this.
A couple of suggestions would be to look at:
ImageMagick - http://www.imagemagick.org/
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/draw/
There is also a coldfusion custom tag MagickTag which wraps ImageMagick at
http://www.alagad.com/index.cfm/name-products
Java 2D API - http://java.sun.com/products/java-media/2D/
Google directory - Computers > Programming > Graphics > Libraries
http://directory.google.com/Top/Computers/Programming/Graphics/Libraries/
As far as the GIS side of things it may make things easier to avoid using
one entirely. If the only dynamic part of your maps will be the vectors you
draw over them then you can just use static maps to start with. For maps
try:
GeoConnections(canada) http://geodiscover.cgdi.ca/gdp/index.jsp?language=en
USGS http://edc.usgs.gov/geodata/
Geography Network http://www.geographynetwork.com/
-----Original Message-----
From: Thomas Chiverton [mailto:[EMAIL PROTECTED]
Sent: September 22, 2004 9:49 AM
To: CF-Talk
Subject: Re: dynamic maps (GIS and other acronyms)
On Wednesday 22 Sep 2004 03:21 am, Matt Liotta wrote:
> What library do I use to create the vector graphics?
We use one from http://www.walterzorn.com/jsgraphics/jsgraphics_e.htm
(typicaly, this site is down atm :-)).
We're doing basicaly the same thing - retrive a map from a map server and
then
draw lines over it, to represent a 'zone'.
> Where do I get the
> maps I am layering the graphics on?
There are a few companies out there that will provide this as a web service,
or you can investigate things based on OpenGIS - such as
http://geoserver.sourceforge.net/
--
Tom Chiverton
Advanced ColdFusion Programmer
Tel: +44(0)1749 834997
email: [EMAIL PROTECTED]
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