Imports github.com/james-bowman/sparse github.com/pointlander/gradient/tf32 gonum.org/v1/gonum/mat gonum.org/v1/plot gonum.org/v1/plot/plotter gonum.org/v1/plot/vg gonum.org/v1/plot/vg/draw Standard library imports flag fmt io/ioutil math math/cmplx math/rand regexp sort strings