Path: news.mathworks.com!not-for-mail
From: "Prashant Patil" <prashantpatil002@gmail.com>
Newsgroups: comp.soft-sys.matlab
Subject: real time plotting data from GPIB device
Date: Fri, 16 May 2008 11:50:03 +0000 (UTC)
Organization: IIT Bombay
Lines: 32
Message-ID: <g0jsdb$327$1@fred.mathworks.com>
References: <g09fov$lp8$1@fred.mathworks.com> <g09nic$h3h$1@fred.mathworks.com>
Reply-To: "Prashant Patil" <prashantpatil002@gmail.com>
NNTP-Posting-Host: webapp-02-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1210938603 3143 172.30.248.37 (16 May 2008 11:50:03 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Fri, 16 May 2008 11:50:03 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 1381085
Xref: news.mathworks.com comp.soft-sys.matlab:468819


"Ankit Desai" <adesai.nospam@mathworks.com> wrote in message
<g09nic$h3h$1@fred.mathworks.com>...
> "Prashant Patil" <prashantpatil002@gmail.com> wrote in
> message <g09fov$lp8$1@fred.mathworks.com>...
> > I have a model 6487 picoammeter (Keithley ) connected to my
> > PC through GPIB interface . I have to find V-I
> > characteristic of a sample and real time data plotting of
> > the data taken from the device .I am new to matlab and need
> > serious help. 
> 
> Hi Prashant,
> 
> Assuming that you are getting data regularly from your GPIB
> device (probably using a loop)you can plot it in real time
> by plot once before the loop. If you provide an output
> argument to plot command, it returns you a handle to the
> plot window.
> 
> Using this handle you can now update the XData and YData
> properties inside your loop. You will have to however call
> 'drawnow' command to refresh your plot window to reflect the
> changes made to XData and YData.
> 
> The following link might be useful:
>
http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/creating_plots/f10-1460.html&http://www.google.com/reader/view/
> 
> -Ankit
> 

Thank you very much , It really helped .