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I want put test 3 sigma on time series by 800*1 dimension. I have this code, it return nothing.

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tara es 2022-6-21

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编辑： tara es 2022-6-21

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clc; clear all; close all;
fid=xlsread('rohi.csv');
x = fid(:,2); res = [];
upperbond = mean(x) + 3*std(x);
lowerbond = mean(x) - 3*std(x);
for n= 1:length(x)
    if x(n) <= upperbond & x(n) >= lowerbond;
        res=[x n];
        emp_prob(x)=1 
    else
        emp_prob(x)=0
        end
end

what is problem?

Thanks in advance

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回答（1 个）

Karim 2022-6-21

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the error is because you intialize

lat = fid(:,2);

this means that 'lat' will be a vector with 1 column

next you ask for

lat(:,i)

or the i-th column, which will give an arror as soon as i becomes larger then 1

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