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Real Time Graph

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  Real Time Graph jsscshaw88@gmail.com - 2012-12-19 11:02 -0800
    Re: Real Time Graph Roedy Green <see_website@mindprod.com.invalid> - 2012-12-19 19:16 -0800
      Re: Real Time Graph David Lamb <dalamb@cs.queensu.ca> - 2012-12-20 06:01 -0500
        Re: Real Time Graph jsscshaw88@gmail.com - 2012-12-20 08:33 -0800
          Re: Real Time Graph jlp <jlp@jlp.com> - 2012-12-20 19:35 +0100
            Re: Real Time Graph jsscshaw88@gmail.com - 2012-12-20 10:45 -0800
              Re: Real Time Graph Lew <lewbloch@gmail.com> - 2012-12-20 11:11 -0800
              Re: Real Time Graph jsscshaw88@gmail.com - 2012-12-20 11:37 -0800
              Re: Real Time Graph "John B. Matthews" <nospam@nospam.invalid> - 2012-12-20 17:47 -0500
                Re: Real Time Graph jsscshaw88@gmail.com - 2012-12-21 11:38 -0800

#20583 — Real Time Graph

Hi,

I am a newbie and trying to plot a real time X Y plot in java. I am using Net Beans IDE7.2. Data has been sampled at the rate of 250 Samples per second. It looks like as follows 

http://img402.imageshack.us/img402/4927/plotqe.png

Data will be coming into the computer over bluetooth but right now I am trying to read and plot the file. The file can be found at the following link

 https://hotfile.com/dl/185255400/ea220f1/packetr.dat.html

You can better view this file in Hex Editor like HxD from wwww.mh-nexus.de.

I do not know how many samples are in the file. But Data sample is 32 bytes long (from byte 13 to byte 44). This Data is the part of a 46 byte Frame. 

It will be a square wave of 1Hz, if we plot the data. It will be like 2 to 4 sec long wave form. 

I tried to work with the following Code to do this 

1. http://audio-analysis.googlecode.com/svn/trunk/src/com/badlogic/audio/samples/part4/RealTimePlot.java

2. http://www.sharewareconnection.com/livegraph-2-0-beta01.htm


But no sucess. I was not even able to run these above mentioned codes. 

Please advise!

jess

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#20616

On Wed, 19 Dec 2012 11:02:14 -0800 (PST), jsscshaw88@gmail.com wrote,
quoted or indirectly quoted someone who said :

>I am a newbie and trying to plot a real time 
X Y plot in java. I am using Net Beans IDE7.2. 
Data has been sampled at the rate of 250 Samples 
per second. It looks like as follows 
>
>http://img402.imageshack.us/img402/4927/plotqe.png

You will sent up a Swing Timer to trigger repaints. see
http://mindprod.com/jgloss/timer.html

You will paint with the draw* methods on a JPanel.
see http://mindprod.com/jgloss/jpanel.html

You will best use a VolatileImage.  On each repaint, you block move to
scroll, then freshly generate the new tail. see
http://mindprod.com/jgloss/jgloss/volatileimage.html

you can put it in a tight loop by calling repaint at the end of your
PaintComponents method.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
Students who hire or con others to do their homework are as foolish 
as couch potatoes who hire others to go to the gym for them. 

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#20624

On 19/12/2012 10:16 PM, Roedy Green wrote:
> You will best use a VolatileImage.  On each repaint, you block move to
> scroll, then freshly generate the new tail. see
> http://mindprod.com/jgloss/jgloss/volatileimage.html

That should be just one /jgloss, Roedy.

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#20628

Hi Guys,

Its not a school home work. As you can see in the original post that the data is coming over wirless bluetooth. 

I designed and made a bluetooth device and I am trying to write a high level software to obtain the data over bluetooth and display it on the screen and store it on the computer. 

jess

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#20634

Le 20/12/2012 17:33, jsscshaw88@gmail.com a écrit :
> Hi Guys,
>
> Its not a school home work. As you can see in the original post that the data is coming over wirless bluetooth.
>
> I designed and made a bluetooth device and I am trying to write a high level software to obtain the data over bluetooth and display it on the screen and store it on the computer.
>
> jess
>
Did you take a look at JFreeChart?
http://www.jfree.org/jfreechart/
You can treat "TimeSeries" with a slightly delayed time ( not in real time)
-- 
Cordialement
Jean-Louis

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#20635

Hi,

I will appricate, if you give me some steps to work with "jfreechart". Like how can I make it integrate with my java code and how can i make it read the format of my file that I did post on the following link

https://hotfile.com/dl/185255400/ea220f1/packetr.dat.html 


Thanks
jess

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#20639

 jsscs...@gmail.com wrote:
> I will appricate, if you give me some steps to work with "jfreechart".
> Like how can I make it integrate with my java [sic] code and how can i [sic]
> make it read the format of my file that I did post on the following link
> 
> httq://yeah, right, we're going to follow your link. Sheesh.

Here you go:
jlp wrote:
> Did you take a look at JFreeChart?
> http://www.jfree.org/jfreechart/
> You can treat "TimeSeries" with a slightly delayed time ( not in real time)

-- 
Lew

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#20641

I posted the file on another link 

http://www.4shared.com/file/8b5-YNcn/packetr.html#

jess

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#20649

In article <c83089a0-6b19-4dfc-9aec-6b0c715607ce@googlegroups.com>,
 jsscshaw88@gmail.com wrote:

> I will appricate, if you give me some steps to work with "jfreechart".

This Q&A shows two approaches to displaying the incoming data:

<http://stackoverflow.com/q/5048852/230513>.

This Q&A illustrates updating a chart's model from a background thread:

<http://stackoverflow.com/q/13205251/230513>

> Like how can I make it integrate with my java code and how can i make 
> it read the format of my file that I did post on the following link
> 
> https://hotfile.com/dl/185255400/ea220f1/packetr.dat.html 

Rather than ask readers to divine the format, you might describe it in 
terms of a minimal sample.

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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#20670

Hi,

I posted the jpeg image of the data file at the following link

http://img43.imageshack.us/img43/1448/datafile.png

jess

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