关于MATLAB的GUI一些实用小技巧
一、数据传递的问题 数据传递的方法很多，也有很多相关的帖子，初步涉及这个东西的时候也参考了很多帖子，百度一下就可以看到很多，不给链接咯，介绍一个我最推荐的方法： setappdata和getappdata 函数原型是 setappdata (figureHandle,'varName',varValue)
一、数据传递的问题
数据传递的方法很多，也有很多相关的帖子，初步涉及这个东西的时候也参考了很多帖子，百度一下就可以看到很多，不给链接咯，介绍一个我最推荐的方法：
setappdata和getappdata
函数原型是
setappdata(figureHandle,'varName',varValue)
作用是在一个图像figureHandle上设置(或者创建)一个名为varName的应用程序变量，其值为varValue。
varValue = getappdata(figureHandle,'varName')
作用是从一个图像figureHandle上取出名为varName的应用程序变量，其返回值存储于varValue中。
其中
figureHandle 一个图形对象句柄，通常GUI程序的主窗口就是一个图形对象句柄，用handles.figureTag在GUI程序中引用主窗口对象，figureTag为主窗口的tag属性值
varName figureHandle上的应用程序变量的名称，可以与自己所写的程序的变量的名称不同，在上述函数原型中加注 ' ' 是提醒你这个变量名一定要是字符串类型
varValue setappdata中代表要保存的变量，可以是任何类型 ； getappdata中代表用来保存被取出的值的变量
|
TIPS : 在多窗口的GUI程序中最好用 setappdata(0,'varName',varValue) 来保存变量(如果未创建会自动创建) ， 用 varValue =getappdata(0,'varName') 来获取保存的变量(如果未保存会返回 [ ] ，即为空 ) ， 这里的 '0' 是根对象，这样做的好处是可以在不同的窗口之间调用(不仅仅是在同一个窗口的不同函数之间)，而且不用考虑所保存的对象是哪一个，即使gcf变换后也不会出错 另外，你可能会发现我介绍的figureHandle 是图形对象句柄，其他对象的句柄也是可以的，不过这个用的相对多些 |
通过存储以及取出完成函数间以及窗口间的数据传递。EG:
函数1中
setappdata(handles.mainFigure,'matrixA',A)
函数2中
B = getappdata(handles.mainFigure,'matrixA')
这样我就把 A 的值传递到了 B 中。
另外，养成一个好的习惯，尤其是当你使用的是根对象来存储变量的时候，在使用完以后记得删除这些变量
rmappdata(figureHandle,'varName')
二、窗口的独占
其实这个问题很简单，只是当时搜索的时候搜索了太久太久，都没有点到正题，所以还是列出来。
在创建的时候，将 windowstyle 属性值设置为 'modal' 即可 ( 也用set来完成该属性的设置 )
三、在MATLAB中运行.EXE程序
在MATLAB里运行可执行程序的办法是在前面加一个!，比如：!picshow，后缀名可有可无。
| TIPS : 在MATLAB中所有字符 ( 除了 ' ' 内的以及注释文字 ) 均用英文输入法，尤其是标点符号，这个很容易弄错 |
四、关于矩阵
MATLAB关于矩阵的运算是极其方便的了，不过在写比较繁琐的程序中要慎用哦。如果关于矩阵的操作需要操作多次，而实际上做了操作的仅仅是矩阵中的少部分元素的话，建议使用元素操作而不用矩阵操作，这样效率会高很多，笔者亲身体验过那个慢啊，受不了
其实还有很多小技巧，欢迎各位读者指出笔者的错误，更希望你们能把你们用MATLAB时候的一些点滴经验留在评论中~~~~
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