CODEWITHSUNDEEP
matlab
Mihan
Mihan

Reputation: 189

Confidence Band using ciplot in MATLAB

I am trying to draw a confidence band in MATLAB using the ciplot function

The code as follows:

Y=Y(:,1); % 5139 by 1 vector
pd = fitdist(Y,'Normal');
ci = paramci(pd);% gives a 2 by 2 matrix of lower, upper for my(:,1) and sigma(:,2)
%ciplot(lower, upper,x, colour)
ciplot(ci(1,1),ci(2,1),Y);

I get the following error

Error using fill
Vectors must be the same length.

Error in ciplot (line 36)

fill([x fliplr(x)],[upper fliplr(lower)],colour)

Error in GHVDConfidenceInterval (line 12)
ciplot(lower,upper,Y);

Please help.

Upvotes: 1

Views: 620

Answers (1)

Zep
Zep

Reputation: 1576

I guess ciplot is the function from Mathworks' FileExchange. In this case, the function expects the same length of vectors for lower, upper and x. I think this is what you are looking for:

Y = randn(5139,1);

pd = fitdist(Y,'Normal');
ci = paramci(pd);
plot(Y);
hold on;
ciplot([ci(1,1) , ci(1,1)] , [ci(2,1) , ci(2,1)] , [1 length(Y)]);

Upvotes: 2

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