how to load a txt file and create a matrix?

Hi everybody!

I need to load the txt file attached and create a matrix in order to create boxplots. Can you help me ?

I tried this code I wrote for another purpose, but I don't know how to increase the number of rows and columns to import:

clear; clc; close;
fid = fopen('grad_all_er_v1.txt','rt');
C = textscan(fid, '%f%f%f', 'MultipleDelimsAsOne',true, 'Delimiter','[;', 'HeaderLines',2);

Answer 1

[Walter Roberson]

The file uses comma as decimal point, which needs to be account for.

C = readmatrix('grad_all_er_v1.txt', 'Decimal', ',', 'treatas', '-9999');

This command also converts all those -9999 into nan.