PolyMath

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PMPrincipalComponentAnalyser - Does not work if num(rows) < num(cols)

3

Code to Reproduce Error ```Smalltalk |a pca | a := PMMatrix rows: #(#(-1 -1 1) #(-2 -1 2)). pca := PMPrincipalComponentAnalyserSVD new componentsNumber: 2. pca fit: a. pca transformMatrix. ```...

nikhilpinnaparaju

Do not reference RSView directly

1

``PMTSNE>>exampleGridWithVizualization`` references ``RSView``, ``TSScale``, and ``RSShapeBuilder``. These items are not in the Pharo minimal image (and GemStone doesn't support Undeclared).

jgfoster

There is several Cuis packages that might be interested to assess in order to see if we can reuse some code: [Cuis Numerics](https://github.com/Cuis-Smalltalk/Numerics) We discuss with @jvuletich about possible collaboration...

SergeStinckwich

PMMatrix >> #asString should be distinct from PMVector >> #asString

1

Currently, PMMatrix just prints its contained vectors separated by newlines. This can be misleading: ```Smalltalk a := PMMatrix rows: #((1 2)). b := #(1 2) asPMVector. a asString = b...

emdonahue

Sync PMBook with PM 1.0

2

Check all book examples: https://github.com/SquareBracketAssociates/NumericalMethods with PolyMath 1.0 code

SergeStinckwich

Implement a FFT and FTW

2

_From @SergeStinckwich on June 5, 2015 9:59_ Try to extract and run the FFT (Fast Fourier Transform) and FWT (Fast Wavelet Transform) classes from Squeak 4.5 image as a first...

SergeStinckwich

Adding the possibility to specify the number of decimal digits instead of using the number of bits

4

_From @SergeStinckwich on June 28, 2015 20:0_ We should be able to specify the precision in number of digital digits instead of just number of bits : ``` Smalltalk 1...

SergeStinckwich

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...

olekscode

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...

olekscode

here: https://newsletter.pharo.org

SergeStinckwich