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Creating an ordered list of vectors

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Zach
Zach 2011-5-31
I'm looking to create a list of vectors arbitrary in length. I was looking for something along the lines of: iterations=___ % some arbitrary number
for i=1:iterations vi=[1 2 3 4]; end
Hoping this would create the vectors v1, v2, v3, v4 ... which are all the same vector [1 2 3 4].

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Walter Roberson
Walter Roberson 2011-5-31
Please do not do that. Please read this FAQ
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Walter Roberson
Walter Roberson 2011-5-31
Generating full variable names is nearly always trouble. Use cell arrays or use a structure with dynamic field names.
Walter Roberson
Walter Roberson 2011-5-31
T1 = cellstr(num2str((1:iterations).','v%d')).';
T2 = repmat({[1 2 3 4]},1,iterations);
T = [T1;T2];
VVars = struct(T{:});
Then use VVars.v1, VVars.v2, VVars.(sprintf('v%d',192)) and so on.

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更多回答（2 个）

Jan
Jan 2011-5-31
Use a CELL instead:
v = cell(1, iterations);
v(:) = {1:4}
Now you can use v{1} instead of v1. It is always better (nicer, safer, faster) to use an index as index, instead of hiding the index in the name of the variable.
Paulo Silva
Paulo Silva 2011-5-31
v=perms(1:4);
Now instead of having v1,v2... you have v(1),v(2)...

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