extracting matrices from text file

Hi everyone,

I want to extract matrices from Text file and read them as a data then split the data to %80 and %20.

I wrote this code to extract the data from the text file; however i still stuggling to split the data

clear all; close all; clc;

X = fileread("data_collection13.txt");

PT = regexp(X, '(?<=\[).*?(?=\])', 'match');

PV = cellfun(@(txt) textscan(txt, '', 'collectoutput', true), PT);

M=cell2mat(PV)

and here is a sample for the data

M1 = [5.5148 0.0000 0.0000 0.0000

0.0000 5.8713 3.1225 2.8308

0.0000 3.1225 3.7475 3.4559

0.0000 2.8308 3.4559 3.4559]

M2 = [5.5148 0.0000 0.0000 0.0000

0.0000 5.8713 3.1225 2.8309

0.0000 3.1225 3.7475 3.4559

0.0000 2.8309 3.4559 3.4559]

M3 = [5.5147 0.0000 0.0000 0.0000

0.0000 5.8712 3.1225 2.8308

0.0000 3.1225 3.7475 3.4558

0.0000 2.8308 3.4558 3.4558]

Answer 1

[Cris LaPierre]

I'd read the data into a matrix, and then use cvpartition to split it. See the examples on the linked page for more on how to accomplish an 80/20 split.