Help about 'calling a variable from workspace by using input command'
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Hi, here is my question; I have some values in workspace which ones names are VarName1, VarName2... And I want to call them by using a input command.
For example
a = 'Enter the number of VarName';
number = input(a);
Then if I enter 18 as number input, it must call VarName18 from workspace. Please help me, thank you.
1 个评论
Do not do this. It will make your code slow, complicated, and buggy:
回答（1 个）
Do not access lots of variable names like that. It will make your code slow, complicated, and buggy:
Just keep all of your data in one variable, and use indexing. Then your task it trivially easy:
>> C{1} = 0:3;
>> C{2} = 4:6;
>> C{3} = 7:9;
>> idx = str2double(input('enter variable #: ','s'));
enter variable #: 2
>> C{idx}
ans =
4 5 6
Look at that: good program design using indexing made my code simple, efficient, and easy to understand. Any code that you write that accesses variable names will be slower, buggier, and more obfuscated.
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2017-3-14
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