Cannot add shaded confidence intervals?

Question

nines 2023-1-31

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1903870-cannot-add-shaded-confidence-intervals

回答： Star Strider 2023-1-31

采纳的回答： Star Strider

example.png

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Hello all,

I have a graph with confidence intervals, where I want to make it so that the confidence intervals are shaded between both of them. I have the following code:

% 1) getting confidence intervals
[ci_groups, ci_pre, ci_post]=bootstrapping_function(matrix_mean, matrix_post_mean)
% 2) taking confidence intervals and multipling by size of matrix
ci_lower_pre = ci_pre(1)*ones(size(matrix_mean));
ci_higher_pre = ci_pre(2)*ones(size(matrix_mean));
% 3) making figure
figure;
plot(f_mr,matrix_mean, '-b'); hold on
% 4) fill the area between the confidence intervals
x = [f_mr, fliplr(f_mr)];
y = [matrix_mean + ci_higher_pre, fliplr(matrix_mean - ci_lower_pre)];
fill(x, y, 'r', 'FaceAlpha', 0.5, 'EdgeColor', 'none');

But when I use the code above I get the attached 'example' as my figure, where there is shading outside of the confidence intervals. Do you have any advice?

Thanks a ton