填充零后如何使单元格长度相同 [英] How to make cell array same length after padding zeros

问题描述

这是具有2 * 159单元格的数据矩阵 在数据矩阵中，有许多列(2个向量)具有不同的长度.我想填充具有最小长度的零.零数应为

This is data matrix having 2*159 cells In the data matrix so many columns ( 2 vectors) having different length . I want to pad zeros which have the minimum length. Number of zeros should be

[max(length(Vector 1))-min(length(Vector 2))]

现在，我想在单元格中添加长度最小的零.如果列的长度没有问题，并且希望使每一列的长度相等.

Now I want add zeros in the cell which have minimum length. and want to make length equal in each column if column have same length than no problem.

推荐答案

n = max(max(cellfun(@(x)size(x,2),data)))
cellfun(@(x)[x, zeros(1,n-numel(x))], data, 'uni', 0)

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以上内容是找到一个单个最大值来填充单元格.现在，我意识到您实际上希望以每列为基础计算该最大值:

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The above was finding one single max value to pad the cells to. I realise now that you actually want this max calculated on a per column basis:

n = max(cellfun(@(x)size(x,2),data))
cellfun(@(x,n)[x, zeros(1,n-numel(x))], data, repmat(num2cell(n),2,1), 'uni', 0)

此时，仅使用循环可能更直观

At this point it might be more intuitive to just use a loop

for col = 1:size(data,2)
    n = max(size(data{1,col},2),size(data{2,col},2));
    for row = 1:2
         x = data{row,col};
         data{row,col} = [x, zeros(1,n-numel(x))];
    end
end

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