MATLAB2011b安装一切正常，但启动后的command window却有如下多的warning，解决方案如下。
Warning: D:\Program Files\MATLAB\R2010b\toolbox\local\pathdef.m not found.
Toolbox Path Cache is not being used. Type 'help toolbox_path_cache' for more info
Undefined function or variable 'ispc'.
Warning: MATLAB did not appear to successfully set the search path. To recover for this session of
MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this warning the next time you
start MATLAB, type "docsearch problem path" after recovering for this session.
Warning: Duplicate directory name: D:\Program Files\MATLAB\R2010b\toolbox\local.
Warning: Initializing Handle Graphics failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup,
which should be resolved as soon as possible. Error detected was:
MATLAB:UndefinedFunction
Undefined function or method 'colordef' for input arguments of type 'double'.
> In matlabrc at 100
Warning: Initializing Java preferences failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup,
which should be resolved as soon as possible. Error detected was:
MATLAB:UndefinedFunction
Undefined function or method 'usejava' for input arguments of type 'char'.
> In matlabrc at 123
Warning: Failed to add default profiler filters.
> In matlabrc at 179
感觉网上很多版主的介绍的解决方案都很乱，这里将我的方法说明如下：
1. 在command window窗口输入命令restoredefaultpath回车，等待执行完成；
2. 输入命令matlabrc回车，等待程序执行完成；
3. 输入命令
savepath pathdef.m回车，等待程序执行完成，随后
会生成一个pathdef.m文件；
4. 关闭matlab后重新启动matlab，这是后在command window还会有警告，原因是找不到pathdef.m文件；
5. 将第3步生成的pathdef.m文件复制到安装目录……\MATLAB\R2011b\toolbox\local下，我是安装在D盘的。
6. 再重新启动matlab，就不会有警告了。
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