Octave:如何将整数向量转换为字符串元胞数组?

Octave: How to turn a vector of integers into a cell array of strings?

八度:

给定一个向量

a = 1:3

如何将向量“a”转换为字符串元胞数组

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

(此输出:)

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

(问题结束)


更多信息:我的目标是使用a作为strcat('x',a)的输入得到

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,但主要问题是关于直接从向量中获取字符串数组。

这个问题是 cell array, add suffix to every string 的后续问题,对我没有帮助,因为 strcat('x',{'1','2','3'}) 有效,但 strcat('x', num2cell(1:3)) 无效:

>> 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,根据的Matlab函数string(a)尚未实现:

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

您可以组合 cellstrint2str:

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

您还可以结合使用 sprintfostrsplit:

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

只是为了添加另一个 'obvious' 解决方案

arrayfun( @(x) strcat('x', num2str(x)), a, 'UniformOutput', false )

或等效

arrayfun( @(x) sprintf('x%d', x), a, 'UniformOutput', false )