Code covered by the BSD License

# Algorithmic Trading with MATLAB - 2009 update

### Ameya Deoras (view profile)

M-file scripts and Simulink models from webinar on 28 May 2009

callnnpiterScan.m
```% routine to call nnpiter
%x=diff(eurusd(1:300000,4));
N=round(length(bid)/10);
tic
%WW = [25,50,75,100,150];
WW = 15:2:75;
DD = 2:20;
NN = 1:12;
%SH=zeros(length(WW),length(DD), length(NN));
for ii=24:length(WW)
window=WW(ii);
for jj=1:length(DD)
d=DD(jj);
for kk = 1:length(NN);
n=NN(kk);
%tic
% parameters for the model
%window=25; d = 10; n=5;
% evaluate the model and compute predictions and signal
xp2=zeros(length(x),1);
sig2=zeros(length(x),1);
% call the iterative nnpred routine
parfor ll=1:length(x)
[x2,s2]=nnpiter(x(ll),window,d,n,0);
xp2(ll)=x2; sig2(ll)=s2;
end
% calculate the time for the backtest
%toc
[window,d,n]
% calculate PnL
pnl = ([0;x(2:end).*sig2(1:end-1)-abs(diff(sig2))*0]);
SH(ii,jj,kk)=sqrt(60*60*11*255)*mean(pnl)/std(pnl);
clear persistent
end
end
end

toc
% find the best sharpes ratio
[I,J]=find(SH==max(max(max(SH))));
K=ceil(J/size(SH,2));
J=rem(J,size(SH,2));
% best parameters
[WW(I), DD(J), NN(K)]
save nnpresults WW DD NN SH I J K
% plot it
figure
[W,D,M]=ndgrid(WW,DD,NN);
isoplot(W,D,M,SH)
```