FIC MATLAB 2017-2/Aula-4

%-- 19-09-2017 19:09:37 --% x = 0:0.01:1; % Outros comandos de plotagem format compact x edit y = x.^2 + 1 plot(x, y) z = cos(2*pi*x); plot(x, z) plot(x, y) figure plot(x, z)x plot(x, z) plot(x, z, 'r') figure(1) plot(x, y, 'm') figure(4) close all figure subplot(2, 3, 1) plot(x, y) subplot(2, 3, 5) plot(x, z) hold on plot(x, -z, 'r') title('meus cossenos') subplot(2, 3, 2:3) stem(x, x.^3) subplot(2, 2, 3) figure close all % Números aleatórios randi([3 7], 3, 10) randi([0 1], 1, 20) randi(3, 1, 20) doc randi rand(3, 9) rand() rand rand() rand(4) R = rand(100); max(max(R)) format long max(max(R)) min(min(R)) rand(1, 10) + 1 format short rand(1, 10) + 1 rand(1, 10) + 4 rand(1, 10) * 4 rand(10) * 4 3 + rand(10) * 7 (10/7) * (rand(10) * 7) (10/7) * (rand(10) + 7) 7 + rand(10)*3 randn(4, 2) randn(20) randn(10) randn(10) * sqrt(5) randn(10) * sqrt(5) + 17 X = randi(1, 16) X = rand(1, 16) X = randi([0 3], 1, 10) bins = 0:3 freq = hist(X, bins) bar(bins, freq) stem(bins, freq) plot(bins, freq) hist(X) X = randi([0 3], 1, 1000); hist(X) X = randi([0 3], 1, 100000); hist(X) X = rand(1, 10000)*3 + 7; hist(X) hist(X, 50) doc hist hist(X, 6.5 : 0.2 : 11) X = randn(1, 10000); hist(X) hist(X, 30) figure Y = randn(1, 10000) * sqrt(5) + 17; hist(Y, 30) % Indexação de vetores e matrizes - Show do Diego % Indexação de um elemento clear all v = randi(10,1,10) v(1) v(2) v(7) w = randi(10,10,1) w(1) w(2) v v(1:5) v(1:2:5) v(1.5) v(0) v(-1) v(-5) length(v) v(40) v v(1:10) v(:) v(5:length(v)) v(5:end) v v(5:end-1) v v(end:-1:1) v v([1 4 5 9]) v([1 4 4 5 9]) A = randn(5,5) A(1) A(2) A(3) A A(4) A(5) A(6) A A(11:15) A(2,3) A(1:5,3) A(:)

% Índice A(8) % Subscript A(3,2) A A(:,2) A A(4,:) A % Linha: 3; Coluna: 4 a 5 A(3,4:5) A(3,[4 5]) A(3,(end-1):end) A A(3:4,[4 5]) A A(1:2:end,1:2:end) A(1:2:end,[1 3 5]) A(1:2:end,[3 3 3]) A(1:2:end,[5 3 1]) A([1 3 5; 1 3 5]) A A([1 3 5; 1 3 9]) A([1 3 5; 1 3 5],[1 3 5; 1 3 5]) A % Lado esquerdo vs lado direito A(3,2) A(3,2) = 10 B = A(3,2) A A(:,2) = 10 A(:,2) = 10:10:50 A(:,2) = 10:10:60 A(:,2) 10:10:60 A A(3:5,3:5) = eye(3) A(end:-1:1,end:-1:1) B = A(end:-1:1,:) A B C = B(:,end:-1:1) % Removendo linhas ou colunas A A([1 2 4 5],:) A(3,:) = [] [] size([])