Plotting different sections of multiple arrays using a loop

Hi,

I have multiple data files that I have extracted using a for loop, I can easily plot these files in the loop aswel.

The problem however is that for each file I only want to plot a snapshot of the data. does anyone know if this is possible to introduce in a loop.

My code to plot all the graphs is:

Time=linspace(1,3000,3000/(50*10^(-6)));
Files =   dir(fullfile('C:blah blah/*.mat')); 
filename = cell(length(Files),1); 
data = cell(length(Files),1); 
for k = 1:length(Files) 
filename{k} = Files(k).name;
data{k} = load(filename{k});
figure;
  plot(Time(1:length(data{k,1})),data{k,1});
  title(filename(k))
end

but to reiterate i want to say plot first data points 1000-2000 for 1, 1-1001 for 2 etc the only similarity is that the data ranges I want to plot are the same. Is this possible?

Answer 1

[Iain]

Assuming your plot command is correct, all you need to do is modify it:

 plot(Time(1:length(data{k,1})),data{k,1});

 plot(Time(1:1000),data{k,1}(1:1000));

[Bill]

yeah thanks but what happens if I want to plot say 1:1000 for k=1, but 501-1500 for k=2, 201-1200 for k=3 etc is this possible in a loop? Or should is just plot them all individually

[Iain]

You just need a function that tells you the first index to use, and a function that tells you the last index to use.

something like

 first = [1 501 201 640 981 321];
 first_index = first(k);
 plot(Time(first_index:(first_index+999)),data{k,1}(first_index:(first_index+999)));

I am assuming that you want the same part of "Time" as you do data...