Create string from a cell array

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daniel.x16
daniel.x16 2011-6-10
Hi,
I have a list of names in a 1 by n matrix. I would like to make them into one string (to generate file names, the end result of my program saves a graph to a file). The names are from varargin (which allows variable amount of inputs)
names=varargin;
I have tried using:
char(names)
This does give a character result, but over n rows. I want one string. Ideally, I would be able to seperate names with underscores, but I would settle for just a string (no spaces) of the names.
Any help would be great.
  1 个评论
Andrew Newell
Andrew Newell 2011-6-10
Don't forget to indent your code two spaces (see http://www.mathworks.com/matlabcentral/answers/7885-tutorial-how-to-format-your-question).

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采纳的回答

Jan
Jan 2011-6-10
Simple and fast:
Str = sprintf('%s_', varargin{:});
Str(end) = [];
But if the cell string has a lot of elements, this can be imrpoved: Obviously SPRINTF does not preallocate the complete string at first. Then try: FEX: CStr2String.

更多回答（2 个）

Walter Roberson
Walter Roberson 2011-6-10
cell2mat(strcat(varargin,'_'))
You can then delete the trailing _ from that if you like.
Andrew Newell
Andrew Newell 2011-6-10
If you want to be sure that there are no whitespace characters, you could use this:
regexprep([names{:}],'\s+','_')
e.g.,
names = {'Cup ',' a ','Joe'}
gives
Cup_a_Joe
Of course, you will get surprises if there is a blank in the middle of one of your arguments!

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