what does this code mean?
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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
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Paulo Silva
2011-5-2
0 个投票
. 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.
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2011-5-2
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