Add different numbers to numbers in vector and have multiple output vectors

I have a vector of 1 row and 7 colomns, the first number is 0.

I want to add 1,-1,i,-i to a the first number in my vector as my second number, and add 1,-1,i,-i to the second number as my third number, etc until I get to number 7 and get all the vectors.

How can I achieve that?

[James Tursa]

This is not clear. Can you give an example of what the first, second, and third numbers would be after the operations?

[Haosheng Yang]

so the first number is 0, the second number would be 1, -1, i, -i; In the case of second number being 1, then the third number would be 2, 0, 1+i, 1-i.

Answer 1

[Walter Roberson]

bsxfun(@plus, [1,-1,i,-i].', YourRowVector)

Or if you have R2016b or later,

[1,-1,i,-i].' + YourRowVector

These will give a 4 x 7 array that you can then index to extract the parts you want.

[Haosheng Yang]

I only want it to be added to the second number in the vector, this one adds to all numbers at once

[Walter Roberson]

for K = 1 : length(YourRowVector)
    this_result = [1,-1,i,-1] + YourRowVector(K);
    disp(this_result)
end

[Haosheng Yang]

I couldn't get this one to work. The first one you provided, [1,-1,i,-i].' + YourRowVector, gives me 1 in the entire first row, -1 in the second, i in the third and -i in the fourth (which I think is close to what I need). I need the result of this to be everything other than the second column to be zero. The ideal situation is to add [1,-1,i,-i] to the first number in the 1*7 vector, and after the first step of addition, I can add [1,-1,i,-i] to the second column of every row and store them in the third column.

[Walter Roberson]

What size are you expecting out of the first step? 4 rows and some number of columns? 7 rows and some columns? And then you want to add [1,-1,i,-i] to the second column of every row, so that would be to 4 (or 7?) rows, giving a 4 x 4 or 7 x 4 result, all of which you want to store into the third column??

[Haosheng Yang]

4 rows and 7 columns, then it would be 16 rows 7 columns and so on.

[Haosheng Yang]

Hello, do you have an idea how to do that? I still couldn't figure it out

[Walter Roberson]

Use for loops. It isn't worth the effort to develop a vectorized solution (especially as I still do not understand what you want.)