Octave:如何将整数向量转换为字符串元胞数组? [英] Octave: How to turn a vector of integers into a cell array of strings?

问题描述

八度:

给定一个向量

a = 1:3

如何转换矢量a"成一个字符串元胞数组

How to turn vector "a" into a cell array of strings

{'1','2','3'}

(输出:)

ans =
{
  [1,1] = 1
  [1,2] = 2
  [1,3] = 3
}

(问题结束)

进一步的信息:我的目标是使用a作为strcat('x',a)的输入来得到

Further information: my aim is to use a as the input of strcat('x',a) to get

ans =
{
  [1,1] = x1
  [1,2] = x2
  [1,3] = x3
}

欢迎使用其他解决方案来实现这一目标，但主要问题是直接从向量中获取字符串数组.

Other solutions how to reach this aim are welcome, but the main question is about getting an array of strings directly from a vector.

这个问题是元胞数组的后续问题，给每一个添加后缀string 对我没有帮助，因为 strcat('x',{'1','2','3'}) 有效，但是 strcat('x', num2cell(1:3)) 不会:

This question is a follow-up from cell array, add suffix to every string which could not help me, since strcat('x',{'1','2','3'}) works, but strcat('x', num2cell(1:3)) does not:

>> strcat('x', num2cell(1:3))
warning: implicit conversion from numeric to char
warning: called from
    strcat at line 121 column 8
    C:/Users/USERNAME/AppData/Local/Temp/octave/octave_ENarag.m at line 1 column 1

warning: implicit conversion from numeric to char
warning: called from
    strcat at line 121 column 8
    C:/Users/USERNAME/AppData/Local/Temp/octave/octave_ENarag.m at line 1 column 1

warning: implicit conversion from numeric to char
warning: called from
    strcat at line 121 column 8
    C:/Users/USERNAME/AppData/Local/Temp/octave/octave_ENarag.m at line 1 column 1

ans =
{
  [1,1] = x[special sign "square"]
  [1,2] = x[special sign "square"]
  [1,3] = x[special sign "square"]
}

此外，Matlab 函数 string(a) 根据 Matlab:如何将元胞数组转换为字符串数组?，尚未实现:

Also, the Matlab function string(a) according to Matlab: How to convert cell array to string array?, is not yet implemented:

"'string' 函数还没有在 Octave 中实现.`

"The 'string' function is not yet implemented in Octave.`

推荐答案

你可以结合cellstr和int2str:

strcat('x', cellstr(int2str((1:3).')))
or
cellstr(strcat('x', int2str((1:3).')))

你也可以结合sprintf和ostrsplit:

ostrsplit(sprintf('x%d ', 1:3), ' ', true)
or
strcat('x', ostrsplit(sprintf('%d ', 1:3), ' ', true))

您也可以使用 num2str 代替 int2str.

You can also use num2str instead of int2str.

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