MATLAB: How to extract only numbers from this .txt file

read filetxt

I am trying to take only the numbers from this file and put them into a column vector but I can't seem to get Matlab to read around the wording. I'm assuming that it should be fairly simple, but since i cant change the formatting of the .txt file that will be used I am a bit stuck.

Best Answer

Try this:

fileName = 'ProjectPartATestInput.txt';
allData = readmatrix(fileName)
numbers = allData(:, 2);

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MATLAB: Reading .txt file

Well, yes you can't read that as a single number. You can either store the whole lot as a vector of digit characters:

digits_text = fileread('digits.txt');

Or convert that to a vector of numbers in the range 0-9:

digits_numeric = digits_text - '0';

Be aware that digits_numeric will use 4 times as much memory as digits_text to store exactly the same information.

You can also store the digits as 8-bit integers (for half the memory of digits_text) but that may hampers you depending on what you want to do with these digits afterwards.

digits_uint8 = uint8(digits_text) - '0';

MATLAB: I want to delete all the headerlines and delimiters from the data in the below attached text file

The best solution is probably to read your entire file as text, then remove the header lines, then parse them with textscan.

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MATLAB: Reading .txt file

MATLAB: I want to delete all the headerlines and delimiters from the data in the below attached text file

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