Function getChartData

plot.go:281–287

DataTable can contain data for multiple graphs, we need to extract only 1

(data *DataTable, index int)

// DataTable can contain data for multiple graphs, we need to extract only 1
func getChartData(data *DataTable, index int) (out [][]float64) {
	for _, r := range data.rows {
		out = append(out, []float64{r[0], r[index]})
	}

	return
}

// Algorithm for drawing line between two points
//