plotting values calculated in loop

Question

Here I'm trying to plot the error (normalized difference between matrices) against the variable rho. All other variables should remain constant. What I'd really like to do is store rho as a separate vector and store values for the error as they're being calculated in each loop.

Any ideas?

%Variables:
%MatrixGen.m:   p,q - matrix size, rho- percentage complete, r - rank
%NuclearNorm.m :   Zincomplete

clear

p=10; q=10;
r=2;

for rho=0.1:0.3:0.9;

    [Ztrue, Zincomplete] = MatrixGen(p,q,r,rho)

    tic
    [Zreconstructed] = NuclearNorm(Zincomplete)
    toc

    Error= norm(Ztrue-Zreconstructed, 'fro')

    hold on
    plot (rho, Error)

end

AdrienNK · Accepted Answer · 2014-03-03 19:46:53Z

1

'Is that what you meant?

%Variables:
%MatrixGen.m:   p,q - matrix size, rho- percentage complete, r - rank
%NuclearNorm.m :   Zincomplete

clear
p=10; q=10;
r=2;

rho = 0.1:0.3:0.9
errors = zeros(size(rho))

for i=1:length(rho);

    [Ztrue, Zincomplete] = MatrixGen(p,q,r,rho(i))

    tic
    [Zreconstructed] = NuclearNorm(Zincomplete)
    toc

    errors(i) = norm(Ztrue-Zreconstructed, 'fro')
end

plot(rho, errors)

end

answered Mar 3, 2014 at 19:46

AdrienNK

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