Records method but for float64 about gota

[kniren]

Hey @MaxHalford, thank you very much for your interest and your nice words. On the README you can find a use case for transforming a DataFrame into something that can be used with Gonum.

Now according to your feature request, you would want to transform a DataFrame into a [][]float64. I guess the first question is, do you need it to be row wise or column wise? If it's the latter you could loop through the columns on the DataFrame, which will return a Series you can then just call the Series.Float method there to get a slice of slices of floats.

What are your thoughts on this?

[MaxHalford]

Yes in the end I did a loop.

func dataFrameToFloat64(df dataframe.DataFrame) [][]float64 {
	var X = make([][]float64, df.Ncol())
	for i, col := range df.Names() {
		X[i] = df.Col(col).Float()
	}
	return X
}

I guess there isn't much point putting this in the gota API because it's so easy to implement. Thanks a lot for your answer!