string 创建字符串的元胞数组 matlab
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create a cell array of strings matlab
提问by brucezepplin
Hi I am trying to create a cell array of strings with:
嗨,我正在尝试使用以下命令创建一个字符串元胞数组:
data = ['1';'2';'3';'4';'5';'6';'7';'8';'9';'10';'11';'12';'13';'14';'15';'16';'17';'18';'19';'20';];
where I expecting a cell array of 25 elements. but I get:
我期望一个包含 25 个元素的单元格数组。但我得到:
length(data)
= 33
so obviously numbers 12,13 etc are counting as 2 bits.
所以显然数字 12,13 等算作 2 位。
My question is then how do I ensure the cell array is of length 20? also the function I am putting the cell array into has to be a cell array of strings even though I am using ints!
我的问题是如何确保单元格数组的长度为 20?即使我使用的是整数,我将元胞数组放入的函数也必须是字符串元胞数组!
回答by Justin
You need to do:
你需要做:
data = {'1';'2';'3';'4';'5';'6';'7';'8';'9';'10';'11';'12';'13';'14';'15';'16';'17';'18';'19';'20';};
Use {}
. These will form a cell array.
使用{}
. 这些将形成一个单元阵列。
回答by chappjc
You can use {}
instead of []
to build a cell, or you can use strsplit
to build an arbitrary length cell of strings representing numbers from 1 to N
:
您可以使用{}
代替[]
来构建一个单元格,或者您可以使用strsplit
来构建一个任意长度的字符串单元格,该字符串表示从 1 到 的数字N
:
data = strsplit(num2str(1:N));
Update:The fastest way to do this now is with the undocumented sprintfc
function (note the "c" at the end) which prints each element to it's own cell:
更新:现在最快的方法是使用未记录的sprintfc
函数(注意末尾的“c”),它将每个元素打印到它自己的单元格:
>> A = sprintfc('%g',1:20)
A =
Columns 1 through 11
'1' '2' '3' '4' '5' '6' '7' '8' '9' '10' '11'
Columns 12 through 20
'12' '13' '14' '15' '16' '17' '18' '19' '20'
>> which sprintfc
built-in (undocumented)