清空筛选条件
清空筛选条件

Why are the results of the size function different from the whos function Size?

2 次查看（过去 30 天）
Brian
Brian 2011-6-15
Why are the results of the size function different from the whos function Size?
Here is an example:
>> excelstring = strfind('ABC DUMP.txt','.xls')
excelstring =
[]
>> size excelstring
ans =
1 11
>> whos excelstring Name Size Bytes Class Attributes
excelstring 0x0 0 double

请先登录，再回答此问题。

采纳的回答

James Tursa
James Tursa 2011-6-15
Doing this:
size excelstring
Is equivalent to doing this:
size('excelstring')
Whenever you invoke a function without the parens, the remainder of your inputs are taken to be literal string(s).

更多回答（1 个）

the cyclist
the cyclist 2011-6-15
Because the syntax for what you wanted is
>> size(excelstring)
Looks like your syntax is giving the size of the string 'excelstring', rather than that of the variable named excelstring.
  1 个评论
Chirag Gupta
Chirag Gupta 2011-6-15
To explain further, size excelstring is equivalent to asking MATLAB to compute size('excelstring').
MATLAB takes the arguments as strings if they are not passed in parenthesis ()

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Whos 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by