matlab 轻松绘制出曲线的动画效果

<pre code_snippet_id="1625672" snippet_file_name="blog_20160327_1_9754145" name="code" class="plain">下面的程序能画出动画效果。非常实用，注意语法，和line类似，只是前两个必须为xdata与ydata

function h=animline(xdata, ydata, varargin)% input:% varargin: properties in line or%           time: time from [xdata(k),ydata(k)] to [xdata(k+1),ydata(k+1)];（两点间绘制的时间）%           gradient: gradual change (渐变效果，数值越大渐变越明显)% xdata,ydata: vector% grammar:%     h=animline(xdata, ydata,'Parent',haxes ,'Gradient',10,'Time',1,'Marker','*');time = 1;gradient=1;c={};            % 传入到Line中for i=1:2:length(varargin)property=varargin{i};value=varargin{i+1};switch(lower(property));case 'time'time=value;case 'gradient'gradient=value;otherwisec=[c,property,value];endendn=length(xdata);t=time/(gradient);for k=1:n-1h=line( 'XData', xdata(1:k),'YData', ydata(1:k) ,c{:});pause(t); delete(h);xk=xdata(k); yk=ydata(k);dx=(xdata(k+1)-xk)/gradient; dy=(ydata(k+1)-yk)/gradient; % step lengthfor g =1:gradient-1h=line( 'XData', [xdata(1:k),xk+dx*g],'YData', [ydata(1:k),yk+dy*g] ,c{:});pause(t); delete(h);endendh=line('XData', xdata,'YData', ydata ,c{:});

function h=animline(xdata, ydata, varargin)% input:% varargin: properties in line or%           time: time from [xdata(k),ydata(k)] to [xdata(k+1),ydata(k+1)];%           gradient: gradual change% xdata,ydata: vector% grammar:%     h=animline(xdata, ydata,'Parent',haxes ,'Gradient',10,'Time',1,'Marker','*');time = 1;gradient=1;c={};for i=1:2:length(varargin)property=varargin{i};value=varargin{i+1};switch(lower(property));case 'time'time=value;case 'gradient'gradient=value;otherwisec=[c,property,value];endendn=length(xdata);t=time/(gradient);h=line( 'XData', [],'YData', [] ,c{:});for k=1:n-1set(h, 'XData', xdata(1:k),'YData', ydata(1:k));drawnow; pause(t);xk=xdata(k); yk=ydata(k);dx=(xdata(k+1)-xk)/gradient; dy=(ydata(k+1)-yk)/gradient; % step lengthfor g =1:gradient-1set(h, 'XData', [xdata(1:k),xk+dx*g],'YData', [ydata(1:k),yk+dy*g]);drawnow; pause(t);endendset(h,'XData', xdata,'YData', ydata);drawnow;