Create cell array with the same string n-times

2011 10 2
4 个回答
回答已采纳
更新时间：2024 2 28
173 次查看（30 天）

4 个投票

Hi all,
I have another problem I haven't found any soulution for yet.
I have a list of Values and I have the name of the .mat-file the values are saved in as a string.
For example
name='Values.mat'
values =
1
2
3
4
5
Now I need to create a cell array with the name of the file for each value.
For example
>> values.filename
ans =
Values.mat Values.mat Values.mat Values.mat Values.mat
Does anybody know how I can create that cell array, size depending on how many values I have?
Thanks a lot! Oli

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 采纳的回答

Daniel Shub
Daniel Shub 2011-10-2

6 个投票

The names of your variables are a little confusing ... You are starting with values being a double array and then wanting values to be a structure ...
To answer your question you can create a cell array with the same string n-times with deal.
doc deal
Specifically you can make a 1x5 cell array filename have the value saved in name with:
[filename{1:5}] = deal(name);
you may want to consider a structure array ...
values = struct('value', mat2cell(values, 1, ones(5, 1)), 'filename', name)

2 个评论
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Olli
Olli 2011-10-2
移动：Dyuman Joshi 2024-2-28
Thanks a lot! Sorry for the confusing description, but your responses were very helpful! Oli
morteza HEIDARI
morteza HEIDARI 2017-2-13
thank you man. it was helpful.

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更多回答（3 个）

Jan
Jan 2011-10-2

95 个投票

C = cell(1, 5);
C(:) = {'String'};

11 个评论
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Jonathan Deaton
Jonathan Deaton 2015-12-8
You are the real winner here.
Youcef Yahiaoui
Youcef Yahiaoui 2016-3-15
Jan Simon's answers are always the best. Whenever I look anything up, I always look for this distinct picture! Thanks, Jan Simon.
Walter Roberson
Walter Roberson 2017-1-4
Yifei Wang comments to Jan:
short and good as always
Jan
Jan 2017-1-4
Thanks. I forward the compliments to Matlab, which allows such compact and nive solutions. Try the same in C... ;-)
Pearl
Pearl 2019-1-30
awesome! Another thanks to you!
Jon
Jon 2019-7-10
very nice technique - found this before, forgot it, and just came back again - thank you
BN
BN 2020-2-11
Dear Jan,
Thank you, it solve my problem too. I just want to say thanks to you.
Best Regards
Saeid
Saeid 2020-9-24
Jan's always there to give the shortest version of every solution. This helped me too!
Fabio Rondina
Fabio Rondina 2021-9-24
still usefull after 10 years. Thanks @Jan
Rob
Rob 2021-12-17
Nice simple solution but it baffles me why Matlab needs two lines of code to do a simple task (or why the default is to set the contents as doubles)?
M_A_C
M_A_C 2024-2-28
Hello Jan,
Your elegant solution worked for me using the function strings.

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dscharf
dscharf 2023-8-17
编辑：Dyuman Joshi 2024-2-28
Ran in:

1 个投票

Ran in:
Riff'ing on @Jan's answer and noting @Rob's comment,
c(1:5) = {'string'}
c = 1x5 cell array
{'string'} {'string'} {'string'} {'string'} {'string'}
gives a 1x5 in one line (assuming c hasn't been defined before) and
d(1:5,1) = {'string'}
d = 5x1 cell array
{'string'} {'string'} {'string'} {'string'} {'string'}
gives a 5x1. Or at least they do in 2022a.

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