计算单元格数组中的单词数 [英] count words in cell array matlab

问题描述

我有一个500x1的单元格，每一行都有一个特定的单词.如何计算单词的出现次数并显示出来，并显示每次出现的百分比.

I have a 500x1 cell aray and each row has a certain word in it. How can I count how many occurences of words there is and display it and also display the percentage of each occurence.

例如

这些词的出现是:

Ans =

     200 Green
     200 Red
     100 Blue

这些单词所占的百分比:

The percentage of these words:

Ans = 

     40% Green
     40% Red
     20% Blue

推荐答案

想法是strcmpi逐元素比较单元矩阵.这可用于将输入名称与输入中的唯一名称进行比较.尝试下面的代码.

The idea is that strcmpi compares cell matrices elementwise. This can be used to compare the input names to the unique names in the input. Try the code below.

% generate some input
input={'green','red','green','red','blue'}';

% find the unique elements in the input
uniqueNames=unique(input)';

% use string comparison ignoring the case
occurrences=strcmpi(input(:,ones(1,length(uniqueNames))),uniqueNames(ones(length(input),1),:));

% count the occurences
counts=sum(occurrences,1);

%pretty printing
for i=1:length(counts)
    disp([uniqueNames{i} ': ' num2str(counts(i))])
end

我将百分比计算留给您.

I leave the percentage calculation to you.

这篇关于计算单元格数组中的单词数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！