Oleksandr Zaitsev

#mean and #stdev are implemented by Pharo Collection #mode is implemented by PolyMath We should put them together either here or there

Any number isComplexNumber should answer true

1

I am not sure about this. At the moment, `isComplexNumber` means _"is this an instance of PMComplexNumber?"_ and `isRealNumber` means _"is this an instance on Number which is not an...

Symmetric matrix is not symmetric

4

We have two ways of instantiating `PMSymmetricMatrix`: 1. by using the `rows:` method, inherited from `PMMatrix` ```Smalltalk m := PMSymmetricMatrix rows: #( (1 2) (2 3)). ``` 2. by converting...

PolyMath data structures should be well integrated into the system of standard Smalltalk collections. This means that PMVector should behave as an Array since it is a subclass of Array...

Improve method names in all classes of DataFrame-IO package

1

Some names are very bad. For example, `uniform` and `uniformDefaultValue` are booleans so they should be called something like `isUniform` and `isUniformDefaultValue` (although I'm not sure what that second one...

The family of replaceNilsWith: methods is defined for DataSeries but not for DataFrame

Implement dtypes method

1

I have removed methods DataFrame>>columnTypes and DataSeries>>type and the related functionality in #61 because their implementation was very bad and slowed down all other methods. However, for exploratory purposes it...

I found this for example: https://pandas.pydata.org/docs/user_guide/reshaping.html Also:  And this: