You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: CovMatrixSolution.m
    path of file: ./repos/curso-de-matlab/010 - Limpar os Dados de Series Temporais 61-71/Aula 068 - Matriz de Covariancia
    
    the code of the file until where you have to start completion: %%
%     Curso do canal ExataMenteS
%     Aula 68 - Matriz de Covariancia
%     Se inscreva no canal e nos ajude a crescer <3
%     https://www.youtube.com/channel/UCZyFebN0_gF2yy5fhVhlXtA
%     Professor: Joao Pinheiro
%     Copyright 
    
function

CovMat_3 = cov(Data');

% Check the size
size(CovMat_3)

% Plot
figure(1), clf

titles = {'Using loops';'Matrix';'MATLAB function'};

% Make images
for i = 1:3
    subplot(1,3,i)
    eval([ 'imagesc(CovMat_' num2str(i) ')' ])
    
    imagesc(CovMat_1)
    axis square
    title(titles{i})
end