plotting without signal(.csv) file being hard coded

Hello

I am trying to plot a huge signal to do some time analysis. Here's a piece of my code.

asig = csvread('tek0001CH1.csv',15,0);% input signal from matlab workspace
%tim =sig(1:1000000,1);
aamp = asig(1:5000000,2);%vary this to get more samples
ts = asig(2,1) - asig(1,1);%sampling rate calculated automatically
tim = [0:5000000 - 1]*ts;%vary this in accordance with aamp
time = tim';%transposed to get a column vactor for plotting
ax1 = subplot(2,1,1);plot(time, aamp);
xlabel('time');
ylabel('amplitude(volts)');
grid;
axis([0 max(tim) -0.1 1.9]);

If I have to change my input signal, I have to change it every time since its hard coded. Is it possible to have an interface where the user selects an input signal from the hard drive or an external interface(usb drive)each time the program runs?

Thanks

Answer 1

[vsee]

I was eventually able to do this with uigetfile. I wonder if there are other ways

[Fangjun Jiang]

That's probably the best way based on your task.