Create confidence interval for linear regression line
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Hi, how can I plot a confidence interval bound for the regresison line using lsline? The code I wrote is this:
clc, clear all, close all
X(:,1) = (1:1:100);
X(:,2) = rand(100,1);
figure;
hold on
plot(X(:,1),X(:,2),'b*','MarkerSize',5);
h = lsline;
set(h,'color','g','LineWidth',3)
%s = lsline + 0.95 * h;
title 'TRY';
xlabel 'X';
ylabel 'Y';
hold off
Thank you
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Star Strider
2019-6-26
2 个投票
I would use the fitlm (link) function to calculate the regression line, the the predict function to calculate the confidence intervals. If you want to use polyfit and polyval instead, you can use the File Exchange contribution polypredci.
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