plot
2-D line plot
Syntax
plot(Y)
plot(X1,Y1,...,Xn,Yn)
plot(X1,Y1,LineSpec,...,Xn,Yn,LineSpec)
plot(...,'PropertyName',PropertyValue,...)
plot(axes_handle,...)
h = plot(...)
1、设置坐标字体（A）
set(gca,'FontSize',12);
2、设置x轴标记文字（B）
xlabel('Frequency（Hz）','FontSize',14,'FontName','Times New Roman');
ylabel('Amplitude（dB）','FontSize',14,'FontName','Times New Roman');
3、设置绘图坐标显示范围
axis([400 3000 -20 70]); % 其中400 3000是x轴最小和最大值；-20和70是y周最小和最大值
4、设置绘图大小
set(gcf,'Position',[200 200 350 250]); % 其中(200,200)是绘图左下角坐标；
% (350，250)是绘图右上角坐标。
5、在图中标注（C）
text(1800,55,’m=0.4’,'FontSize',14); % 在400，300位置添加标注m=0.4
6、设置标题（D）
title(‘800Hz,sqrt0,1.0’);
7、设置曲线的粗细
set(findobj(get(gca,'Children'),'LineWidth',0.5),'LineWidth',1); % 设置线条粗细
8、存储绘图
saveas(gcf,’test.emf’,'emf'); % 存储当前图像为test.emf。
9、不显示绘图
set(gcf,'visible','off'); % 不显示图片
10、标注同一绘图中不同曲线
legend('m=1.0',’m=0.8’);
e.g.
一、
t1 = (0:11)/11*pi; y1 = sin(t1) .* sin(9*t1); t2 = (0:100) / 100 *pi; y2 = sin(t2) .* sin(9*t2); subplot(2,3,1) plot(t1,y1,'r.') subplot(2,3,4) plot(t2,y2,'r.') subplot(2,3,2) plot(t1,y1,'r') subplot(2,3,5) plot(t2,y2,'r') subplot(2,3,3) plot(t1,y1,t1,y1,'r.') subplot(2,3,6) plot(t1,y1,'g',t1,y1,'r.')
二、
plot(x,y,'r',x,y, 'ks','MarkerSize',7)
三、
A = load('result.txt'); % for i = 0:0 % start = i*4 +1 % en = (i+1) *4 % x = A(start:en, 1) % y = A(start:en, 2) % end figure hold on x = A(1:4,1); y = A(1:4,2); plot(x,y, '-ks','MarkerSize',7, 'LineWidth', 1) x = A(5:8,1); y = A(5:8,2); plot(x,y, '-m+','MarkerSize',7, 'LineWidth', 1) x = A(9:12,1); y = A(9:12,2); plot(x,y, '-bo','MarkerSize',7, 'LineWidth', 1) x = A(13:16,1); y = A(13:16,2); plot(x,y, '-yx','MarkerSize',7, 'LineWidth', 1) x = A(17:20,1); y = A(17:20,2); plot(x,y, '-rd','MarkerSize',7, 'LineWidth', 1) x = A(21:24,1); y = A(21:24,2); plot(x,y, '-c*','MarkerSize',7, 'LineWidth', 1) axis([0,500,0.66,0.74]) grid on title('Warm Prediction') xlabel('Given'),ylabel('NMAE') legend('A','B','C','D','E','F') set(findobj(get(gca,'Children'),'LineWidth',1),'LineWidth',2);
