Warning: Divide by zero.
(Type "warning off MATLAB:divideByZero" to suppress this warning.)
> In E:\matlab\toolbox\matlab\datafun\mean.m at line 26
In E:\cc\data\小波包与近似熵\ApEn.m at line 32
Warning: Divide by zero.
(Type "warning off MATLAB:divideByZero" to suppress this warning.)
> In E:\matlab\toolbox\matlab\datafun\mean.m at line 26
In E:\cc\data\小波包与近似熵\ApEn.m at line 33
K>>
这是什么原因?