Thread Subject: Need Help With Plot

Hello,

Can someone please explain me how can I plot data on real time , so when I will watch the figure window I'll see the graph being updated while the data is still incoming ( like a monitor ) ?

Thanks .

Hello,

I have a question: Do you have access to Simulink, or MATLAB only?

Rick



"conplot" <conplot@gmail.com> wrote in message
news:4235818.1215027348462.JavaMail.jakarta@nitrogen.mathforum.org...
> Hello,
>
> Can someone please explain me how can I plot data on real time , so when I
> will watch the figure window I'll see the graph being updated while the
> data is still incoming ( like a monitor ) ?
>
> Thanks .

Yes, I have access to simulink .

Since you have mentioned simulink , Is it possible to use the rs232 blockset in a way that i can plot on real-time the data that is being sent to the serial port ?
perhaps using a unit that translate every 8 bits to an integer number and plotting it ?

Thanks

conplot <conplot@gmail.com> wrote in message
<24448310.1215066830447.JavaMail.jakarta@nitrogen.mathforum.org>...
> Since you have mentioned simulink , Is it possible to use
the rs232 blockset in a way that i can plot on real-time the
data that is being sent to the serial port ?
> perhaps using a unit that translate every 8 bits to an
integer number and plotting it ?
>
> Thanks

If you are using R2008a, you can use Instrument Control
Toolbox. It provides Simulink Blocks for Serial
Communication (Serial Send and Serial Receive).

However, Serial Blocks are available only in R2008a.

-Ankit

> conplot <conplot@gmail.com> wrote
> Can someone please explain me how can I plot data
> on real time , so when I will watch the figure
> window I'll see the graph being updated while the
> data is still incoming ( like a monitor ) ?

Interesting that nobody answered your original question
which seems to be about plotting. Matlab's plot function
is really for plotting static data, but you can use it
to plot moving data in the following way:

1) Plot the first data set (or a dummy one) using "plot".
2) Then as the new data comes in, change the xdata and/or
  ydata properties of the line objects created by plot.

I have several example programs that show moving plots in
Matlab. (To find them, search for "plt" in the file
exchange and look in the demo folder). The examples that
involve dynamic plots are: pltsq, wfall, bounce, movbar,
and dice. (The last one shows how to plot a single data
set as it is growing or being acquired). They all use
"plt" (my alternative to plot) to plot the initial data
set, but they would work with "plot" as well. It's all
about how you change the properties of the line objects
created by plot (or plt).

~Paul