Read data from text file

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Edward 2013-9-26

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https://ww2.mathworks.cn/matlabcentral/answers/88329-read-data-from-text-file

评论： Matt Kindig 2013-9-26

Hi, i have a text file with contents:

26/09/2013,16:04:40 2412 928.0 49.94930
25/09/2013,14:24:30 2412 914.0 -999999

The file above contains a date, time and 3 numbers per line.

I want to read this into an array of dates, times, and x, y, z for the numbers where each element in the array is each line of the file.

Is there an easy way to do this (if so how?) or do i have to read the line as a String and parse it?

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Answer 1

Matt Kindig 2013-9-26

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https://ww2.mathworks.cn/matlabcentral/answers/88329-read-data-from-text-file#answer_97885

编辑：Matt Kindig 2013-9-26

You should be able to do it with textscan

fid = fopen('/path/to/your/file.txt', 'rt');
output = textscan(fid, '%s %s %f %f %f', 'Delimiter', ' ,');
fclose(fid);
%you can then break this out into individual variables
dates = output{1};   %you can further use datenum() to convert to a date number
times = output{2};
x = output{3};
y = output{4};
z = output{5};

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Edward 2013-9-26

This is brilliant, i want the output as a structure so for example, struct.x, struct.y etc how do i make it so i output an array of structures struct(2) rather than a structure of arrays struct.x(2)

I hope this makes sense!

Matt Kindig 2013-9-26