How to concatenate arrays of different size in a loop?

I have been trying to concatonate arrays from multiple files in a loop. It worked fine when I could initialize a zeros array with set dimensions and append each column with a files data , such as:

set_length = 1875;

num_f = 18;

init = zeros(1875,18);

for i = 1: num_f

init(:,i) = file_content

But now I applied a filter to the data and the file_content arrays are all different, such as 105 x 1 or 371 x 1, is there any way I can set up the loop to concatonate these into one array?

Answer 1

[KALYAN ACHARJYA]

How to concatenate arrays of different size in a loop?

result=0;
for i=1:iter_num
x_new=  % array New generation
result=[result,x_new]
end

[Kyle Vanlerberghe]

I tried this and I am getting an error:

Error using horzcat

Dimensions of arrays being concatenated are not consistent.

I think this is because my x_new is a 105 x 1array and the result is only an integer when initialized. Is there any fix to this?

[KALYAN ACHARJYA]

I tried with this sample example (random), no error

result=0;
for i=1:5
x_new=randi(10,[1,randi(8)])  % array New generation with different length
result=[result,x_new]
end

[KALYAN ACHARJYA]

Are those all unequal arrays already generated? You are asking variable length array concatenate using loop, right?

[Kyle Vanlerberghe]

My problem was that my array was 105 x 1 instead of 1 x 105, I just had to use the transpose of my x_new array. Thank you so much for your help

[KALYAN ACHARJYA]

One way do the transpose and save it

or

result=[result; x_new]
%.............^