Is JFreeChart suitable to my application

Velan · Post by **Velan** » Wed Jan 25, 2006 12:44 am

Hi,
I am going to develop a java applet based chart system which will constanly get the feed from a server. Based on these data, the applet has to update the chart in realtime. Chart type I am planning to develop are :

candlestick charts
lines
low/close bars

Is it possible to do this with JfreeChart.. Is any one done this aready.. What is your experience.. Is there any other api in java / any other platform having better support than JFreeChart..

Thanks in advance..

Thanks & Regards
Vadivelan.R.

imamicPH · Post by **imamicPH** » Thu Oct 12, 2006 10:04 pm

I would like to up this. Thank you. My second post.

develop · Post by **develop** » Fri Oct 13, 2006 7:26 pm

do you mean to say real time chart ?? or intraday charts ?

we have developed the intra day charts using Jfreechart .(not applet but application which is java web start)

we have also done real time charting using Jfreechart.

so this is definately possible with JfreeChart.

Thanks

imamicPH · Post by **imamicPH** » Fri Oct 13, 2006 10:05 pm

I'm going to start out trying to display intraday charts . . .

I think this will be easier considering I will not need to deal with communicating with a data vendor's server . . . .

Any tips on how to get started with jfreecharts. Do I need to d/l jcommon?

I have experience with Java but am not sure what I'm supposed to do with the download. Am I supposed to download it and then import libraries into my program? Does it matter where I store the file?

Am I going to need to buy the guide?

develop · Post by **develop** » Fri Oct 13, 2006 10:18 pm

guide is helpful. you will need all libraries from jfreechart. jfreechart uses jcommon, so you will need that.

if you have all examples, you should look at the MemoryUsageDemo.

thats the one i used when i started making Intra day chart.

and one thing Jfreechart has something called SegmentedTimeLine (which is DateAxis) that has one method called fifteenMinuteTimeline .. that is very cool. i used that with some modifications and now i dont have any gaps between intra day data.

let me know if you need any help.

Jfreechart is great product and i am using it .. so i would love to help if i can.

imamicPH · Post by **imamicPH** » Sat Oct 14, 2006 6:29 am

develop wrote:
if you have all examples

What examples are we talking about?

develop · Post by **develop** » Sat Oct 14, 2006 3:55 pm

there is a demo jar files if you have downloaded all the example. thats what i am talking about

imamicPH · Post by **imamicPH** » Sat Oct 14, 2006 6:26 pm

develop wrote:there is a demo jar files if you have downloaded all the example. thats what i am talking about

alright I extracted the download called "jfreechart-1.0.2.tar".

I attached a screenshot of of my windows explorer.

I don't know if I have the right download. This is one of the downloads from jfreechart. I did not see anything labeled examples though.

Sorry about the my confusion

I'll follow with a screenshot

imamicPH · Post by **imamicPH** » Sat Oct 14, 2006 6:58 pm

Forget the screenshot . . .

Can't figure it out . .

I'm going to spend the afternoon playing around see if I can come up with something before I splurge for the guide . .

develop · Post by **develop** » Sat Oct 14, 2006 8:07 pm

sorry. my mistake. actually to get that demo, you need to purchase the guide. normal demo jar file does not have that demo.

thanks

imamicPH · Post by **imamicPH** » Sun Oct 15, 2006 10:26 pm

Would something like MatLab be easier to work with ?. . . .

I mean I'm like everyone else if I need a guide my interest declines . .