MATLAB: Improve efficiency of a matlab code that includes for loop and if statement

code matlabefficency

I have the followig script which I am running for a matrix that consists of several thousand rows and which makes the full ccode very slow. Is there any way to improve the speed of the code?
Here you find the code which is saved in a seperate script and which is called by the function run the speciific script:
     dataset=zeros(size(data9,1),9);
     dataset(:,1:9)=data9;for i=1:length(dataset(:,1))
     %h=msgbox(num2str(i))
   if dataset(i,3)==1
         vola(i)=blkimpv(dataset(i,1),dataset(i,2),dataset(i,7),dataset(i,5),dataset(i,4));   elseif dataset(i,3)==2
         vola(i)=blkimpv(dataset(i,1),dataset(i,2),dataset(i,7),dataset(i,5),dataset(i,4),10,[],{'Put'});
     end 
    end
Which improvements are there to get the code execution the desired functions much faster?

Best Answer

It really depends whether BLKIMPV can work on vectors. If so, you can go for something like:
 dataset = zeros(size(data9,1), 9) ;
 dataset(:,1:9) = data9;
 vola = zeros(size(dataset,1), 1) ;
 id = dataset(i,3) == 1 ;
 vola(id) = blkimpv(dataset(id,1), dataset(id,2), dataset(id,7), ...
                    dataset(id,5), dataset(id,4)) ;
 id = dataset(i,3) == 2 ;
 vola(id) = blkimpv(dataset(id,1), dataset(id,2), dataset(id,7), ...
                    dataset(id,5), dataset(id,4), 10, [], {'Put'}) ;
where you might have to replace 10 and {'Put'} with arrays of these values.
I don't have the Financial Toolbox though, so I can't test.
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