Normalize using first element of vector

I want to normalize the elements of the following vector using the first element. I want the first element of my vector 'stock_market' to be 100 and the other elements of the vector to be normalized according to that value. I used the normalize function:

stock_market = readmatrix('^FTSE.csv' , 'Range' , 'F2:F313')

norm_stock_market = normalize(stock_market , 'scale' , 'first' , '100')

but I am getting an error.

Any help would be appreciated. Thanks!

Answer 1

[Ameer Hamza]

A = [10 20 15 12];
A_new = A/A(1)*100;

Using normalize()

normalize(A, 'scale', 'first')*100

[Anaya Kharwadkar]

This works! Thanks so much

[Ameer Hamza]

I am glad to be of help!