How to assign a vector with predefined data?

I need to a assign a n x n vector with data and use that vector to call a function. All example i found is for creating random or zero vector.

x size n x n (5 x 5) and n must equal length(y), and y size n x 1

A = [10695.88;10446.39;10082.36;9760.39;9390.26];

B = [10705.50;10439.13;10171.95;9794.65;9455.76];

x = vector of A with size 5 x 5 ?

y = vector of B with 5 x 1 ?

Thank you.

Answer 1

[Shanmukha Voggu]

Hi fatema,

I understand that you want to create a vector with predefined data instead of using zeros, ones, rand functions.

let's create a vector A(5 x 1)

A=[1;2;3;4;5]

A = 5×1

1 2 3 4 5

let's create a vector B(5 x 5) from the predefined data(A)

B=A(:,[1,1,1,1,1])

B = 5×5

1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5

The same result as above can be achieved by doing the following

RowCount = size(A, 1)

RowCount = 5

ColumnIndexes = ones(1, RowCount)

ColumnIndexes = 1×5

1 1 1 1 1

B=A(:, ColumnIndexes)

B = 5×5

1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5

The best way to use the predefined data is to index it to get the desired results. refer to this document for more info.

[israt fatema]

Thank you very much.