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matlabprintfvariadic-functions
user2654568
user2654568

Reputation: 47

Pass varargin inputs into sprintf

Is there a way to pass the inputted arguments in a function, varargin, into an sprintf command?

The problem is that sprint doesn't like cell inputs. I've tried using varargin{:} and the series of mat2str(cell2mat( )

Ideally I want to have this in a loop

for k = varargin 
    filename = sprintf('%s.mat',i)
    more code......
end

Thanks!

Upvotes: 1

Views: 775

Answers (2)

texnic
texnic

Reputation: 4098

To help people landing here by googling for the title:

You can pass varargin to sprintf this way:

sprintf(format, varargin{:})

Matlab will convert cell array to comma-separated values, like 

sprintf(format, varargin{1}, varargin{2}, ...)

Upvotes: 2

nkjt
nkjt

Reputation: 7817

You're nearly there, to be honest. Try this:

for k = 1:length(varargin)
    filename = sprintf('%s.mat', varargin{k})
    more code......
end

This assumes that all inputs are strings.

Another related and quite useful function is inputname which you can use if you want to return the names of the variables passed in as arguments.

for k = 1:length(varargin)
    filename = sprintf('%s.mat', inputname(k))
    more code......
end

One thing to watch out for: inputname returns an empty string if an input is unnamed.

Upvotes: 0

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