Matlab中绘制带箭头的坐标轴

转载自：http://blog.sina.com.cn/s/blog_6427cceb0100xnj9.html

方法一：

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下面的程序虽然显示带箭头的坐标轴，但事实上并非真正的坐标轴，而是使用fill函数在两个直线段的终点填充了一个三角面而已。

Matlab 代码：

x=-5:10;
y=-5:10;
plot([0 0],[min(y),max(y)],'k',[min(x),max(x)],[0 0],'k');
axis off
hold on
ax=[max(x),max(x)-0.3,max(x)-0.3;0,0.2,-0.2];
fill(ax(1,:),ax(2,:),'k');
ay=[0,0.15,-0.15;max(y),max(y)-0.4,max(y)-0.4];
fill(ay(1,:),ay(2,:),'k');

方法二：

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Matlab代码：

x1=linspace(0,1,100);
y1=x1.^2;
figure1 = figure('PaperPosition',[0.6345 6.345 20.315.23],'PaperSize',[20.98 29.68]);
axes1 = axes('Parent',figure1);
hold(axes1,'all');
plot1 = plot(x1,y1);
annotation1 = annotation(figure1,'arrow',[0.131 0.131],[0.920.96]);
annotation2 = annotation(figure1,'arrow',[0.88 0.96],[0.1080.108]);

相关参数说明：

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PaperPosition

four-element rect vector

Location on printed page. Arectangle that determines the location of the figure on the printed page.Specify this rectangle with a vector of the form

rect = [left,bottom, width, height]

where left specifies the distance from theleft side of the paper to the left side of the rectangle and bottom specifiesthe distance from the bottom of the page to the bottom of the rectangle.Together these distances define the lower-left corner of the
rectangle. widthand height define the dimensions of the rectangle. The PaperUnits propertyspecifies the units used to define this rectangle.

也就是说PaperPosition是在打印页面上的位置

This example exports a figure at screen size to a 24-bitTIFF file, myfigure.tif.

set(gcf, 'PaperPositionMode', 'auto') % Use screen size

print -dtiff myfigure



PaperSize

PaperSize 向量[width,height]代表了用于打印的纸张尺寸,单位由PaperUnits属性指定

papersize是纸张大小;position要比size小的



axes1 = axes('Parent',figure1);

是指定figure1为axes1的父对象，所以axes1将会在figure1中显示出来。如果你不指定父对象，MATLAB就会自动把“当前figure”作为axes1的父对象。



If you want to make an axes the current axes withoutchanging the state of the parent figure, set the CurrentAxes property of thefigure containing the axes:

set(figure_handle,'CurrentAxes',axes_handle)

This command is useful if you want a figure to remainminimized or stacked below other figures, but want to specify the current axes



ANNOTATION creates an annotation object

ANNOTATION(ANNOTATIONTYPE)creates a default annotation of type

ANNOTATIONTYPE inthe current figure. ANNOTATIONTYPE maybe one of the following:

'rectangle'

'ellipse'

'textbox'

'line'

'arrow'

'doublearrow'= two headed arrow

'textarrow' =arrow with text at tail end

ANNOTATION('arrow',X,Y) creates an arrow annotation withendpoints specified in normalized figure coordinates by the vectors X and Y.

X(1) and Y(1) specify the position of the tail end of thearrow and X(2) and Y(2) specify the position at the tip of the arrow head.