compare two vectors plot

Hi,I have 2 vectors of length 1024, I want to take 100 samples equally spaced from each to make a comparison plot?

Answer 1

[the cyclist]

Of course, it is not possible to do this perfectly evenly spaced, and span the entire vector, so you have to make some compromise somewhere.

Here is one possibility. It will generalize to other cases:

% Some made-up data
N = 1024;
a = sort(rand(1,N));
b = sort(rand(1,N));

% How much to sample
N_sample = 100;

% Create an (almost) uniform sample
sampleIdx = round(linspace(1,N,N_sample));
a_sample = a(sampleIdx);
b_sample = b(sampleIdx);

% Plot
figure
plot(a_sample,b_sample)

Here is the result ...

[yousef Yousef]

Perfect ,Thanks,just I notice, the comparison should be done as:

t=1:100;

plot(t,a_sample,t,b_sample)