How do I save a cell array that has both text and numeric data?

Question

T Shep 2016-11-15

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评论： Image Analyst 2016-11-16

I have a data set where I would like to extract alphanumeric data to a text file. E.g. here is one 1x6 cell array:

37 0 240 0.436 'cat dog mouse' 10

I would like to save this data into a text file but I cannot do that with the fprintf command since it contains alphanumeric data. How do I do this?

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Answer 1

dpb 2016-11-15

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>> fmt=[repmat('%5d',1,3) '%8.4f ' '%s %5d\n'];
>> fprintf(fmt,c{:})
  7    0  240  0.4360 cat dog mouse    10
>>

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T Shep 2016-11-15

Thank you! Works great!

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Answer 2

Image Analyst 2016-11-15

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https://ww2.mathworks.cn/matlabcentral/answers/312407-how-do-i-save-a-cell-array-that-has-both-text-and-numeric-data#answer_243447

在 MATLAB Online 中打开

Here's one way:

ca = {37, 0, 240, 0.436, 'cat dog mouse', 10}
fid = open(filename, 'wt'); % File on disk
% fid = 1; % Command window.
fprintf(fid, '%f, %f, %f, %f, %s, %d\n', ca{:});
close(fid);

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T Shep 2016-11-16

I see. I think I am getting the hang of it. What if I want to now open up that text file so that each number is in a separate cell and the string 'cat dog mouse' is back in it's own cell (without commas)? i.e. read it in so that I am back to: 37 0 240 0.436 'cat dog mouse' 10

Do I just use....

textread(fid, '%f, %f, %f, %f, %s,%f,%f, %d\n')

Image Analyst 2016-11-16

I don't know. You could always try it. I think they recommend textscan() now instead of textread(). Or you could use fgetl() to get just one line and then use textscan() or sscanf() on just that line.

You might also be able to use importdata() or readtable(). See which function lets you read it in with the least fuss.

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