matlab 绘图坐标轴设置-526互联

matlab 坐标轴设置：

简单的曲线：y=sin (x);

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x=-pi/2:0.01:pi/2;

y=sin(x);

plot(x,y);

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上面的图坐标轴默认格式，不太符合数学习惯。可以按照下面设置：

x 坐标轴设置成 - pi/2 到 pi/2，间隔为 pi/4

y 坐标轴设置成 - 1 到 1，间隔为 0.5

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Xmark=-pi/2:pi/4:pi/2;                                   %X轴刻度

XmarkLabel={'-pi/2','-pi/4','0','pi/4','pi/2'};      %X轴刻度的标注

Ymark=-1:0.5:1;                                            %Y轴刻度

YmarkLabel={'-1','-0.5','0','0.5','1'};                %Y轴刻度的标注

set(gca,'XTick',Xmark);                                   %设置X轴刻度

set(gca,'XTicklabel',XmarkLabel);                      %设置X轴标注

set(gca,'YTick',Ymark);                                    %设置Y轴刻度

set(gca,'YTicklabel',YmarkLabel);                      %设置Y轴标注

set(gca,'XGrid','on');                                        %打开X轴格网

set(gca,'YGrid','on');                                         %打开Y轴格网

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