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.

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.')

plot(x,y,'r',x,y, 'ks','MarkerSize',7)

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);