Method $getDataArraysByAxis

src/danfojs-base/core/frame.ts:206–218

* Return data aligned to the specified axis. Transposes the array if needed. * @param axis 0 or 1. If 0, column-wise, if 1, row-wise

(axis: number)

     * @param axis 0 or 1. If 0, column-wise, if 1, row-wise
    */
    private $getDataArraysByAxis(axis: number): ArrayType2D {
        if (axis === 1) {
            return this.values as ArrayType2D
        } else {
            let dfValues;
            if (this.config.isLowMemoryMode) {
                dfValues = utils.transposeArray(this.values) as ArrayType2D
            } else {
                dfValues = this.$dataIncolumnFormat as ArrayType2D
            }
            return dfValues
        }
    }

    /* 
    * checks if DataFrame is compactible for arithmetic operation