动画在Matlab

问题描述

我如何动画的表面，如果它在时间坐标的变化（例如椭球）利用Matlab？

How do I animate a surface if it's coordinates change in time (e.g. ellipsoid) using Matlab?

推荐答案

下面是几个方法可以在动画MATLAB地块的例子...

Here are a couple of examples of ways you can animate plots in MATLAB...

您可以创建在其中改变表面坐标循环使用的命令，并使用命令暂停每次循环迭代的时间短的时间。这里有一个例子：

You can create a loop in which you change the surface coordinates, update the plot object using the SET command, and use the PAUSE command to pause each loop iteration for a short period of time. Here's an example:

[x,y,z] = ellipsoid(0,0,0,4,1,1);  %# Make an ellipsoid shape
hMesh = mesh(x,y,z);               %# Plot the shape as a mesh
axis equal                         %# Change the axis scaling
for longAxis = 4:-0.1:1
  [x,y,z] = ellipsoid(0,0,0,longAxis,1,1);   %# Make a new ellipsoid
  set(hMesh,'XData',x,'YData',y,'ZData',z);  %# Update the mesh data
  pause(0.25);                               %# Pause for 1/4 second
end

当你运行上面，你应该看到椭圆收缩的长轴，直到它是一个球体。

When you run the above, you should see the long axis of the ellipsoid shrink until it is a sphere.

结果

您也可以使用，而不是循环执行更新的情节。在这个例子中，我首先做一个函数 timer_fcn ，我想每次定时器触发执行：

You can also use a timer object instead of a loop to execute the updates to the plot. In this example, I'll first make a function timer_fcn that I want executed each time the timer fires:

function timer_fcn(obj,event,hMesh)
  n = get(obj,'TasksExecuted');               %# The number of times the
                                              %#   timer has fired already
  [x,y,z] = ellipsoid(0,0,0,4-(3*n/40),1,1);  %# Make a new ellipsoid
  set(hMesh,'XData',x,'YData',y,'ZData',z);   %# Update the mesh data
  drawnow;                                    %# Force the display to update
end

现在我可以创建情节和定时器并开始计时如下：

Now I can create the plot and timer and start the timer as follows:

[x,y,z] = ellipsoid(0,0,0,4,1,1);  %# Make an ellipsoid shape
hMesh = mesh(x,y,z);               %# Plot the shape as a mesh
axis equal                         %# Change the axis scaling
animationTimer = timer('ExecutionMode','fixedRate',...  %# Fire at a fixed rate
                       'Period',0.25,...                %#   every 0.25 seconds
                       'TasksToExecute',40,...          %#   for 40 times and
                       'TimerFcn',{@timer_fcn,hMesh});  %#   run this function
start(animationTimer);  %# Start timer, which runs on its own until it ends

这将显示相​​同的动画作为for循环的例子。而一旦你与定时器对象来完成，记得要经常删除：

This will display the same animation as the for-loop example. And once you're done with the timer object, remember to always delete it:

delete(animationTimer);

这篇关于动画在Matlab的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！