Re: How to read file and plot

[Stephan Wyder]

Hi Rizal

Reading a text file and plotting its data can easily be done in octave (see 
example below).
Please notice that you have to juggle a bit around with your data, depending on 
the format.
You can always type 'help' in front of a command to get a help text in the 
octave console, or have a
look at the octave documentation.

Stephan

-------------------
% create your dataset (exampledata)
x = (-1:0.1:1);
y = sin(x);
data = zeros(length(x),2);
data(:,1) = x;
data(:,2) = y;

% save data to file (your textfile)
save('-ascii','data2.txt','data');

%load textfile
data2 = load('data2.txt');

%plot data
plot(data2(:,1),data2(:,2));
-------------------



On 05.05.2010, at 09:18, rizal wrote:

> 
> Haii all
> i have on file (example : data.txt), i want read this file and then to plot.
> how to code in octave
> thank`s all
> -- 
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