what does this code mean?

Hey everybody, I copied a piece of code and I am trying to translate this code to formulas in excel but I am having a hard time trying to transform this part of code:

SSB(t)=((N(:,t).*exp((-FKA*f)+(-M02*m))).*MAKA)'*WAKA;

N is 9 x 31 FKA is 9 x 1 M02 is 9 x 1 MAKA is 9 x 1 WAKA is 9 x 1

Can anyone explain to me the steps in this column? And what do the stars and dots mean?

Cheers, Ruben

Answer 1

[Paulo Silva]

. before operation means that the operation is element wise

[a b].*[c d]=[a*c b*d]

' means transpose (columns turn into rows and rows into columns)

[a b]'=[a;b]

: means every element of column or row, it depends if it's before or after the comma, there are also other uses.

M(:,1) means all rows of column 1 and M(1,:) means all columns of row 1

M(:) means all elements of the array M

It can also be used to create vectors like this

v=1:0.1:10; %creates a vector with elements starting at 1 with 0.1 increment and ending at 10

M(1:10); %get the first 10 elements of the array M

Now you can understand your expression, I won't do it because by doing it you will learn better.

[Oleg Komarov]

You meant [a*c b*d]

[Paulo Silva]

yes thanks, silly typo lol