How to plot data against samples

let say I have sample 1000 and myData = rand(1,samples) how can I plot myData against samples do I tried

figure
plot(myData);

and

figure
plot(sample);

but I got nothing show on my window

Answer 1

[Star Strider]

See if this does what you want:

figure(1)
plot(myData)
hold on
plot(sample)
hold off

[will99]

it didn't work I only got think straight line on the x-axis

[Star Strider]

It actually did work. Your ‘sample’ is a single data point plotted at (0,1000). Your ‘myData’ vector are a sequence of random floating-point numbers on the interval (0,1). The plot scales them linearly in both axes, so the random vector appears as a line on the x-axis.

To see this, plot them logarithmically:

sample = 1000;
myData = rand(1,sample);

figure(1)
semilogy(myData, '-r')
hold on
plot(sample, 'bp')
hold off