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How do I do multiple assignment in MATLAB?
So let's say I have a vector p = [1 2 3]. I want a command that looks like this:
[x y z] = p; so that x = p(1), y = p(2), and z = p(3).
Is there an easy way to do this?
- 3Duplicate: stackoverflow.com/questions/2740704/…, which is itself a duplicate of stackoverflow.com/questions/2337126/…mtrw– mtrw2010-05-23 21:02:45 +00:00Commented May 23, 2010 at 21:02
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3 Answers
Convert to cell array.
pCell = num2cell(p); [x,y,z] = pCell{:}; 
5 Comments
rlbond
Well, looks like this is the best I can do.
Philipp
Why defining pCell at all: [x,y,z] = num2cell(p){:};
Jonas
@Philipp: In which version of Matlab can you do that? Octave has the feature, but Matlab doesn't have it (yet)
Philipp
@Jonas You are so right. I am currently only using octave and I am not aware of the small differences.
Jonas
@Philipp: No problem. Agreed that chain-indexing would really be nice.
You can use deal:
[x y z] = deal( p(1), p(2), p(3) )
1 Comment
rlbond
Well, that's just as verbose as
x = p(1); y = p(2), z = p(3)Well, turns out there's no way to one-line this, so I wrote a function.
function varargout = deal_array(arr) s = numel(arr); n = nargout; if n > s error('Insufficient number of elements in array!'); elseif n == 0 return; end for i = 1:n varargout(i) = {arr(i)}; %#ok<AGROW> end end