个人笔记

x = 0:0.05:5;
y1 = sin(x.^2);
y2 = cos(x.^2);
plot(x,y1,x,y2)

load patients Height Weight Systolic    % load data
scatter(Height,Weight,20,Systolic)      % color is systolic blood pressure
xlabel('Height')
ylabel('Weight')
colorbar

x = 0:0.05:5;
y1 = sin(x.^2);
y2 = cos(x.^2);
plot(x,y1,x,y2)
colorbar

x = randn(1000,1);
nbins = 25;
h = histogram(x,nbins)

Y = magic(10);
boxchart(Y)
xlabel('Column')
ylabel('Value')

X = linspace(0,4*pi,50)';
Y = [0.5*cos(X), 2*cos(X)];

figure
stairs(Y)

X = linspace(0,2*pi,50)';
Y = [cos(X), 0.5*sin(X)];
stem(Y)

Z = [2+3i -1-3i -1+i 2i 3-4i -2-2i -2+4i 0.5-i -3i 1+i];
feather(Z)

x = -2:0.2:2;
y = -2:0.2:3;
[X,Y] = meshgrid(x,y);
Z = X.*exp(-X.^2-Y.^2);
% 通过将 `ShowText` 属性设置为 `'on'` 来显示标签
contour(X,Y,Z,'ShowText','on')

theta = 0:0.01:2*pi;                      % angle
rho = abs(sin(2*theta).*cos(2*theta));    % radius
polarplot(theta,rho)

x = -2:0.1:2;
y = erf(x);
eb = rand(size(x))/7;
errorbar(x,y,eb)

theta = [0.4 1.4 3.1 2.3 0.4 2.5 3.9 2.8 2.3 1.6 4.6 4.5 6.1 3.9 5.1];
rose(theta,10) % 将范围在0~2pi之间的数据划分到10个bin