Matlab箭头坐标轴
slandarer 人气:0属实是写工具函数写上瘾了,又写了一个一行代码将坐标轴变为箭头坐标轴的函数,而且可以对其进行随意拖动和缩放(拖动需要先点击那个像手掌的符号):
功能函数的引用非常简单,就只是在最后面加上一行:
arrowAxes()或者arrowAxes(ax)
即可,以下给出几个例子:
demo1 基础使用
就像上面说的一样,编写好代码后在最后面引用一下工具函数即可:
% arrow axes demo1 % @author:slandarer t=-pi:.2:2*pi; stem(t,sin(t),'LineWidth',1.5); arrowAxes()
demo2 轴方向
可以调整坐标区域的XAxisLocation属性及YAxisLocation属性来调整坐标轴的方向和位置,总共有九种组合,篇幅问题这里不一一列举
这里只列举常用的四种:
% arrow axes demo2 % @author:slandarer t=-pi:.2:2*pi; % 子图1 ax1=subplot(2,2,1); plot(t,sin(t),'LineWidth',1.5); arrowAxes(ax1) % 子图2 ax2=subplot(2,2,2); plot(t,sin(t),'LineWidth',1.5); ax2.XAxisLocation='top'; ax2.YAxisLocation='right'; arrowAxes(ax2) % 子图3 ax3=subplot(2,2,3); plot(t,sin(t),'LineWidth',1.5); ax3.XAxisLocation='origin'; arrowAxes(ax3) % 子图4 ax4=subplot(2,2,4); plot(t,sin(t),'LineWidth',1.5); ax4.XAxisLocation='origin'; ax4.YAxisLocation='origin'; arrowAxes(ax4)
demo3 轴的其他属性
在引用工具函数前调整坐标轴的粗细和颜色,引用工具函数时,工具函数会自动提取坐标轴的属性并赋予箭头坐标轴:
% arrow axes demo3 % @author:slandarer t=-pi:.2:2*pi; stem(t,sin(t),'LineWidth',1.5); % 修改坐标轴属性 ax=gca; ax.XColor=[1,0,0]; ax.LineWidth=2; ax.XAxisLocation='origin'; arrowAxes(ax)
后言
不管画多少子图,怎样的轴方向和位置,每个子图都能像如下这样任意调整坐标范围和图像缩放。
工具函数完整代码
function arrowAxes(ax) % % @author: slandarer % @公众号: slandarer随笔 % @知乎 : hikari % @CSDN : slandarer % % 期待您的关注!!! help arrowAxes % 若不希望输出[作者信息],请删除这行 if nargin<1 ax=gca; end ax.Box='off'; ax.UserData.arrow{1}=[]; ax.UserData.arrow{2}=[]; ax.UserData.arrow{3}=[]; ax.UserData.arrow{4}=[]; pos=ax.Position; xm=.02; ym=.02; % ------------------------------------------------------------------------- switch ax.XAxisLocation case 'bottom' ax.UserData.arrow{2}=annotation('arrow'); ax.UserData.arrow{2}.Color=ax.YColor; ax.UserData.arrow{2}.Position=[pos(1),pos(2),0,pos(4)+ym]; case 'top' ax.UserData.arrow{4}=annotation('arrow'); ax.UserData.arrow{4}.Color=ax.YColor; ax.UserData.arrow{4}.Position=[pos(1),pos(2)+pos(4),0,-pos(4)-ym]; case 'origin' ax.UserData.arrow{2}=annotation('arrow'); ax.UserData.arrow{2}.Color=ax.YColor; ax.UserData.arrow{2}.Position=[pos(1),pos(2),0,pos(4)+ym]; ax.UserData.arrow{4}=annotation('arrow'); ax.UserData.arrow{4}.Color=ax.YColor; ax.UserData.arrow{4}.Position=[pos(1),pos(2)+pos(4),0,-pos(4)-ym]; end switch ax.YAxisLocation case 'left' ax.UserData.arrow{1}=annotation('arrow'); ax.UserData.arrow{1}.Color=ax.XColor; ax.UserData.arrow{1}.Position=[pos(1),pos(2),pos(3)+xm,0]; case 'right' ax.UserData.arrow{3}=annotation('arrow'); ax.UserData.arrow{3}.Color=ax.XColor; ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2),-pos(3)-xm,0]; case 'origin' ax.UserData.arrow{1}=annotation('arrow'); ax.UserData.arrow{1}.Color=ax.XColor; ax.UserData.arrow{1}.Position=[pos(1),pos(2),pos(3)+xm,0]; ax.UserData.arrow{3}=annotation('arrow'); ax.UserData.arrow{3}.Color=ax.XColor; ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2),-pos(3)-xm,0]; end if strcmp(ax.XAxisLocation,'top') if ~isempty(ax.UserData.arrow{1}),ax.UserData.arrow{1}.Position=[pos(1),pos(2)+pos(4),pos(3)+xm,0];end if ~isempty(ax.UserData.arrow{3}),ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2)+pos(4),-pos(3)-xm,0];end end if strcmp(ax.YAxisLocation,'right') if ~isempty(ax.UserData.arrow{2}),ax.UserData.arrow{2}.Position=[pos(1)+pos(3),pos(2),0,pos(4)+ym];end if ~isempty(ax.UserData.arrow{4}),ax.UserData.arrow{4}.Position=[pos(1)+pos(3),pos(2)+pos(4),0,-pos(4)-ym];end end for i=1:4 if ~isempty(ax.UserData.arrow{i}),ax.UserData.arrow{i}.LineWidth=ax.LineWidth;end end reArrow() % ------------------------------------------------------------------------- function reArrow(~,~) if strcmp(ax.XAxisLocation,'origin') pos=ax.Position; ylim=ax.YLim; sepy=(0-ylim(1))./(ylim(2)-ylim(1)).*pos(4); switch true case ylim(2)<=0 if ~isempty(ax.UserData.arrow{1}),ax.UserData.arrow{1}.Position=[pos(1),pos(2)+pos(4),pos(3)+xm,0];end if ~isempty(ax.UserData.arrow{3}),ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2)+pos(4),-pos(3)-xm,0];end case ylim(1)>=0 if ~isempty(ax.UserData.arrow{1}),ax.UserData.arrow{1}.Position=[pos(1),pos(2),pos(3)+xm,0];end if ~isempty(ax.UserData.arrow{3}),ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2),-pos(3)-xm,0];end case ylim(2)>0&ylim(1)<0 if ~isempty(ax.UserData.arrow{1}),ax.UserData.arrow{1}.Position=[pos(1),pos(2)+sepy,pos(3)+xm,0];end if ~isempty(ax.UserData.arrow{3}),ax.UserData.arrow{3}.Position=[pos(1)+pos(3),pos(2)+sepy,-pos(3)-xm,0];end end end if strcmp(ax.YAxisLocation,'origin') pos=ax.Position; xlim=ax.XLim; sepx=(0-xlim(1))./(xlim(2)-xlim(1)).*pos(3); switch true case xlim(2)<=0 if ~isempty(ax.UserData.arrow{2}),ax.UserData.arrow{2}.Position=[pos(1)+pos(3),pos(2),0,pos(4)+ym];end if ~isempty(ax.UserData.arrow{4}),ax.UserData.arrow{4}.Position=[pos(1)+pos(3),pos(2)+pos(4),0,-pos(4)-ym];end case xlim(1)>=0 if ~isempty(ax.UserData.arrow{2}),ax.UserData.arrow{2}.Position=[pos(1),pos(2),0,pos(4)+ym];end if ~isempty(ax.UserData.arrow{4}),ax.UserData.arrow{4}.Position=[pos(1),pos(2)+pos(4),0,-pos(4)-ym];end case xlim(2)>0&xlim(1)<0 if ~isempty(ax.UserData.arrow{2}),ax.UserData.arrow{2}.Position=[pos(1)+sepx,pos(2),0,pos(4)+ym];end if ~isempty(ax.UserData.arrow{4}),ax.UserData.arrow{4}.Position=[pos(1)+sepx,pos(2)+pos(4),0,-pos(4)-ym];end end end end set(ax.Parent,'WindowButtonMotionFcn',@reArrow); % 设置鼠标按下回调 end
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