Replacing values in cell array in for loop

Question

ARN 2020-5-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526330-replacing-values-in-cell-array-in-for-loop

评论： Stephen23 2020-5-18

I have cell array {1x5} and each cell contains 1000x1000 matrix. I need to find values which are less than 100 and replace it with 100. I tried with cellfun but i couldn't get the right solution.

Can anyone help me with that?

Y(cellfun(@(Y) Y < spect_threshold, spect_threshold, 'UniformOutput', false));

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephen23 2020-5-18

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526330-replacing-values-in-cell-array-in-for-loop#answer_433118

编辑：Stephen23 2020-5-18

在 MATLAB Online 中打开

It is simpler and more efficient to use max:

F = @(m) max(m,spect_threshold);
Y = cellfun(F, Y, 'UniformOutput', false);

2 个评论
显示无隐藏无

ARN 2020-5-18

What does the first line mean? can you please eleborate.

Thanks

Stephen23 2020-5-18

The first line defines an anonymous function (called "lambda function" in some other languages):

https://www.mathworks.com/help/matlab/matlab_prog/anonymous-functions.html

The function has one input m and for each element in m returns either its value or spect_threshold, whichever may be greater. cellfun applies that function to each matrix in the cell array.

请先登录，再进行评论。