How can I interpolate rows in an array with a loop?

Hi I would like to interpolate rows of an array with a loop. I wrote this code but it doesn't work, can you help me to solve this problem? Thanks

for i=1:size(A,1)

vq=0.01

b(i,:)=interp1((1:length(A{i,:})),A{i,:},vq)

end

[Dave B]

What is A (i.e. type, shape)? what are you expecting in b?

Answer 1

[Yazan]

if A is an array, then Matlab will throw an error, as you are using curly braces for indexing.

Below is a demo on how to user interp1

t0 = 1:1:10;

% create a matrix contaning data sampled at step = 1;
t = repmat(t0, [3,1]);
x = (1:3)';
A = x.*t;

% assume you need to sample at a step = 0.5
tq = t0(1):0.5:t0(end);

% interpolate every row linearly and save results in B
B = nan(size(A,1), length(tq));
for j=1:size(A,1)
    B(j, :) = interp1(t0, A(j,:), tq);
end

% plot one row of A and B
figure,
plot(tq, B(1,:)); hold on
plot(t0, A(1,:), 's'); grid minor
legend({'Interpolated data', 'Original data'})