在Matlab中将字符串转换为双精度 [英] Convert a Cell of Strings to a Double in Matlab

问题描述

如何转换单元格如下：

 >> A = [{'2'}; {'2'}; {'****'}; {'23'}; {'23.6'}] 
 
 A = 
 
'2'
'2'
'****'
'23'
 '23 .6'
  / pre> 
 
 
按以下方式进行双倍
  A = 
 
 2.0000 
 2.0000 
 NaN 
 23.0000 
 23.6000 
  
 
 
解决方案
   str2double  可以直接在单元格数组上调用：
 >> X = str2double（A）
 X = 
 2.0000 
 2.0000 
 NaN 
 23.0000 
 23.6000 
  pre> 
 
 
 
 
 
在一个无关的笔记中，用于定义单元格数组的符号 A 可以简化一下：
 >> A = {'2'; 2’ ; ****; 23’ ; '23 .6'} 
 A = 
'2'
'2'
'****'
'23'
 '23 .6'
  
不需要所有这些大括号：）
 
How do i convert a Cell as the following: 
>> A = [{'2'};{'2'};{'****'};{'23'};{'23.6'}]

A = 

    '2'
    '2'
    '****'
    '23'
    '23.6'  
To a double as the Following
A =

    2.0000
    2.0000
       NaN
   23.0000
   23.6000

解决方案
str2double can be called directly on a cell array of strings:
>> X = str2double(A)
X =
    2.0000
    2.0000
       NaN
   23.0000
   23.6000




On an unrelated note, the notation used to define the cell array A can be simplified a bit:
>> A = {'2'; '2'; '****'; '23'; '23.6'}
A = 
    '2'
    '2'
    '****'
    '23'
    '23.6'
no need for all those curly brackets :)

                        
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