how to code variable to code

2019 7 3
1 个回答
更新时间：2019 7 3
2 次查看（30 天）

0 个投票

like in box name have s1 s2 s3 s4 s5 s6 .. sn
s1 = 1
s2 = 2
s3 = 3
sn = n
**************************
for i=1:n
s<i> do something
end
************
behind s<> how to code variable to code

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回答（1 个）

madhan ravi
madhan ravi 2019-7-3

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8 个评论
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Anantachai Chotkamsri
编辑：Anantachai Chotkamsri 2019-7-3
sry i can't find my answer T^T
Walter Roberson
Walter Roberson 2019-7-3
The answer is "Don't DO That!"
There are ways to do it, but there are very very few good reasons to do it considering the alternatives.
Anantachai Chotkamsri
编辑：Anantachai Chotkamsri 2019-7-3
pls. can u teach me? cos my algorithm need to use this function
Rik
Rik 2019-7-3
Explain what you want to do. Then we can help you solve your actual problem.
i want to know how to use for loop for varible
example >> i create
-------------------------------------
for i=1:1000
eval(sprintf('s%d = i+1', i));
end
------------------------------------------
i will got s1 ,s2 ,s3 , ...sn on work space.
but it too many n i can't typing. i want to use for loop to help but i dont know about code.
-----------------------------------------------------------------------
for i=1:n
s( in this blacket how to tell matlab when i use for loop )
i know i can typing
s1 = do something
s2 = do something
s3 = do something
but i have a lot of n. i want for loop to do this for me.
like
s(i) = do something <<< for easy than typing
end
-----------------------------------------------------------------------
thank you.
Dennis
Dennis 2019-7-3
I think you already identified the problem, do not create variables s1,s2,s3 i n the first place.
s=ones(1000,1);
for i=1:1000
s(i)=i+1;
end
Stephen23
Stephen23 2019-7-3
@Anantachai Chotkamsri: what is stopping you from just using indexing?
Indexing is simple, neat, and very effiicient (unlike what you are trying to do).
Indexing is also explained in the introductory tutorials:
https://www.mathworks.com/help/matlab/getting-started-with-matlab.html
and also explained in the link that madhan ravi gave you.
thank you so much for help everyone. <3

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