Basic, general purpose and meta mappers.
Classes
| ChainMapper(mappers, **kwargs) | Meta mapper that embeds a chain of other mappers. |
| CombinedMapper(mappers, **kwargs) | Meta mapper that combines several embedded mappers. |
| FeatureSliceMapper(slicearg, **kwargs[, ...]) | Mapper to select a subset of features. |
| Mapper([inspace]) | Basic mapper interface definition. |