Function CopyXYs

plotter/plotter.go:139–148

CopyXYs returns an XYs that is a copy of the x and y values from an XYer, or an error if one of the data points contains a NaN or Infinity.

(data XYer)

// an XYer, or an error if one of the data points contains a NaN or
// Infinity.
func CopyXYs(data XYer) (XYs, error) {
	cpy := make(XYs, data.Len())
	for i := range cpy {
		cpy[i].X, cpy[i].Y = data.XY(i)
		if err := CheckFloats(cpy[i].X, cpy[i].Y); err != nil {
			return nil, err
		}
	}
	return cpy, nil
}

func (xys XYs) Len() int {
	return len(xys)