Why array of strings are concatenated?

23 次查看（过去 30 天）
Zeynab Mousavikhamene
评论： Star Strider 2019-11-4
parameters=['K13','K24','K_52','K63','K74','K80','K101','K114','K162','MI','Ce','Ge','Pe'];
When I use:
size(parameters)
I get this:
ans =
1 39
But I wanted to get 1*13. I realized it concatenate all the strings to each other:
>> parameters
parameters =
'K13K24K_52K63K74K80K101K114K162MICeGePe'
How can I define it so that they become separated.
  2 个评论
Stephen23
Stephen23 2019-11-4
编辑：Stephen23 2019-11-4
Those are not strings, they are character vectors. Note the difference:
  • "..." scalar string
  • '...' character vector
https://www.mathworks.com/help/matlab/characters-and-strings.html
String arrays and character arrays have very different properties and behaviors!
Star Strider
Star Strider 2019-11-4
Note that string arrays were introduced in R2016b. Prior to that, strings and character arrays were considered to be the same thing.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2019-11-4
The square brackets [] are a concatenation operator.
To keep the individual strings as strings, use a cell array:
parameters = {'K13','K24','K_52','K63','K74','K80','K101','K114','K162','MI','Ce','Ge','Pe'};
Note the curly brackets {} denoting a cell array.
See the documentation section on MATLAB Operators and Special Characters
  2 个评论
ME
ME 2019-11-4
This is the same suggestion I made five minutes before!
In fairness though you've actually explained the problem rather than just giving the solution as I did!
Star Strider
Star Strider 2019-11-4
@ME — Frequently, more than one person is in the process of writing an Answer to a particular Question at the same time. For more detailed Answers that require documentation references, it takes longer. If my Answer essentially duplicates a posted Answer when I discover it, I delete mine. If I believe it adds something, I leave it up.
I almost always delete my Answers if they are not Accepted.

请先登录，再进行评论。

更多回答（1 个）

ME
ME 2019-11-4
You could just store this in a cell array instead - with one parameter inside each cell

类别

在 Help Center 和 File Exchange 中查找有关 Characters and Strings 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