MATLAB Answers

Import .txt data into CELL ARRAY

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Philip
Philip on 17 Sep 2018
Commented: Philip on 25 Sep 2018
I have text files with arrays of data:
{ Centroid = [[1 0 1],[0 1 0]] Ages= [10 20 30],Times = [ 3:00, 3:05] }
->Exact example, text file includes enclosed brackets '{ }'
I need to import this data into a (cell array?) in MATLAB, so that I can call the various labels and access their data.
  2 Comments
Philip
Philip on 17 Sep 2018
I don't have a particular idea, but some type of table in which I could call chunks of data.
'Centroid'
{[0 1 1]}
{[2 1 3]}
Etc: I'm not super familiar with Tables in MATLAB

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Answers (1)

Paolo
Paolo on 17 Sep 2018
Try something like this:
raw = fileread('mytextfile.txt');
[~,tok]=regexp(raw,'([A-Z][a-z]+).*?(\[.*?(?=[ ,][A-Z}]))','match','tokens');
tokens = [tok{:}];
varnames = tokens(1:2:end);
data = tokens(2:2:end);
cell2table(data,'VariableNames',varnames)
1×3 table
Centroid Ages Times
___________________ ____________ _______________
'[[1 0 1],[0 1 0]]' '[10 20 30]' '[ 3:00, 3:05]'
  6 Comments
Philip
Philip on 25 Sep 2018
Question on output: Can you now call specific parts from the table? How would you do that: example
answer = table('Ages',array[0])
...
(answer = 10)
Would it be better/easier to use textscan? Especially for text files that are just one big array of numbers?
Thanks!

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