The numpy.ma module
The numpy.ma module
Rationale
Masked arrays are arrays that may have missing or invalid entries. The numpy.ma
module provides a nearly work-alike replacement for numpy that supports data arrays with masks.
What is a masked array?
In many circumstances, datasets can be incomplete or tainted by the presence of invalid data. For example, a sensor may have failed to record a data, or recorded an invalid value. The numpy.ma
module provides a convenient way to address this issue, by introducing masked arrays.
A masked array is the combination of a standard numpy.ndarray
and a mask. A mask is either 登录查看完整内容