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Convert vector to cell array

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Austin on 18 Jun 2013
I am trying to use this
xDataNumbers = [2.5 5 7 8 11.5]
as the datanames for a fints
tsobj = fints(dates, data, datanames)
so - the question is: How do I convert a vector with numbers into a "Cell array of data series names" in the form nn.n?
Thanks. A
Austin on 18 Jun 2013
Edited: Austin on 18 Jun 2013
I have an array
xDataNumbers = [3.5 7 9.2 11.5 ...]
that I want to use as datanames for the third parameter in
tsobj = fints(dates, data, datanames)
The format should have max width of 5 with 1 decimal place (%5.1f I think). Another issue is that the datanames cant start with a number, so it's ok to prepend something like 'S: '
Oh, wait, can the dataname strings even contain any numbers??
Matt Kindig
Matt Kindig on 18 Jun 2013
What is the desired output for datanames?

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Accepted Answer

Kye Taylor
Kye Taylor on 18 Jun 2013
The third input to the fints function is a cell array of strings that can be valid MATLAB identifiers. That is, the strings cannot start with numbers and can only contain letters, numbers, and the underscore. As a workaround, you could do this
% convert numeric array to cell, and convert all contents to strings
dataNamesInput = cellfun(@num2str,num2cell(xDataNumbers(:)),'uniformoutput',false);
% make sure first letter is not numeric (it will be 'x')
dataNamesInput = cellfun(@(s)['x',s],dataNamesInput,'uniformoutput',false);
% remove periods and replace with underscores
dataNamesInput = regexprep(dataNamesInput,'\.','_');
and use dataNamesInput as the third input. Someone may suggest using the genvarnames function, but it will replace periods with '0x2'. You may prefer that. In any case, you'll still need the first line of code above that converts numeric array to cell of strings.
  1 Comment
Jan on 19 Jun 2013
dataNamesInput = cellfun(@(s)['x',s],dataNamesInput, 'uniformoutput',false);
dataNamesInput = regexprep(dataNamesInput,'\.','_');
can be done faster by:
dataNamesInput = strcat('x', dataNamesInput);
dataNamesInput = strrep('.', '_');

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