使用Matlab进行基本绘图

使用plot函数绘制正弦曲线。x轴：x=0:pi/10:2*pi;设置x轴为0到2pi的范围，y：y=sin（x）,绘图：plot(x,y);

使用xlabel，ylabel，legend等对图形即兴进一步的解释处理。>> xlabel('x轴')>> ylabel('y轴')>> legend('y=sin(x)')>> title('正弦曲线图')

plot3  Plot lines and points in 3-D space.    plot3() is a three-dimensional analogue of PLOT().      plot3(x,y,z), where x, y and z are three vectors of the same length,    plots a line in 3-space through the points whose coordinates are the    elements of x, y and z.      plot3(X,Y,Z), where X, Y and Z are three matrices of the same size,    plots several lines obtained from the columns of X, Y and Z.      Various line types, plot symbols and colors may be obtained with    plot3(X,Y,Z,s) where s is a 1, 2 or 3 character string made from    the characters listed under the PLOT command.      plot3(x1,y1,z1,s1,x2,y2,z2,s2,x3,y3,z3,s3,...) combines the plots    defined by the (x,y,z,s) fourtuples, where the x's, y's and z's are    vectors or matrices and the s's are strings.

plot3示例：t=0:pi/50:6*pi;plot3(t.*sin(3*t),t.*cos(3*t),t)grid

三维网格图：mesh； [X,Y] = meshgrid(-8:.5:8);R = sqrt(X.^2 + Y.^2) + eps;Z = sin(R)./R;mesh(Z);

surf函数：k = 5;n = 2^k-1;[x,y,z] = sphere(n);c = hadamard(2^k);surf(x,y,z,c);colormap([1  1  0; 0  1  1])axis equal

surfc：> [X,Y,Z] = peaks(30);surfc(X,Y,Z)colormap hsvaxis([-3 3 -3 3 -10 5])

bar：y = [75.995 91.972 105.711 123.203 131.669 ...     150.697 179.323 203.212 226.505 249.633 281.422];figure; bar(y);

barh：y = [75.995 91.972 105.711 123.203 131.669 ...     150.697 179.323 203.212 226.505 249.633 281.422];figure; barh(y);

x = -4:0.1:4;y = randn(10000,1);hist(y,x)

rose：figureload sunspot.dat  % Contains a 2-column vector named sunspotrose(sunspot(:,2),12)