hw to plot a graph in java

[jyothik]

i want a program that reads a file with 2 columns:
- time in minutes for the x axis
- value (e.g. temperature, heart freq.) for the y axis

Plot the last m minutes, the y axis shall have a range from min...max.
Start with parameter values m=5, speed s=1, min=20, max=120.
After m=5 minutes, the graphical display shall plot the curve of the
last 5 minutes. In other words, you have to implement a sliding window
with a 5 minute history. This way of displaying measurements is common
for many medical instruments.
The speed s is useful for testing, 1=real time, 10=10 times faster.
To implement the real time behaviour, you have to let the program wait the
time interval between two values. The time interval is not constant.

Out put can be seen in this link
http://alf42.dyndns.org/oost/temperature_diagram_example.gif

Test data can be seen in this link
http://alf42.dyndns.org/oost/temp_testdata_2007-06-21

[prometheuzz]

i want a program that reads a file with 2 columns:
...

The answer is the same as in the previous forum you posted:
- try to do it yourself and ask specific questions on the forum;
- you can use http://www.jfree.org/jfreechart/ (the site has examples!).

Good luck.

[madhoriya22]

i want a program that reads a file with 2 columns:
- time in minutes for the x axis
- value (e.g. temperature, heart freq.) for the y axis

Plot the last m minutes, the y axis shall have a range from min...max.
Start with parameter values m=5, speed s=1, min=20, max=120.
After m=5 minutes, the graphical display shall plot the curve of the
last 5 minutes. In other words, you have to implement a sliding window
with a 5 minute history. This way of displaying measurements is common
for many medical instruments.
The speed s is useful for testing, 1=real time, 10=10 times faster.
To implement the real time behaviour, you have to let the program wait the
time interval between two values. The time interval is not constant.

Out put can be seen in this link
http://alf42.dyndns.org/oost/temperature_diagram_example.gif

Test data can be seen in this link
http://alf42.dyndns.org/oost/temp_testdata_2007-06-21

Hi U can use JFreeChart for that...Its a free java library... just download it from here here. And start use it.......

Thanks :)
madhoriya

[prometheuzz]

Hi U can use JFreeChart for that...Its a free java library... just download it from here here. And start use it.......

Thanks :)
madhoriya

Excellent suggestion, if I say so myself!
; )

[blazedaces]

I wish I had known about JFreeChart before writing a program to plot an array of polar points ... Ah well, at least I learned quite a lot figuring it out...

This is a great program though from what I've seen of the site...

Good luck to you,

-blazed