Interface GridXYZ

plotter/heat.go:20–35

GridXYZ describes three dimensional data where the X and Y coordinates are arranged on a rectangular grid.

// GridXYZ describes three dimensional data where the X and Y
// coordinates are arranged on a rectangular grid.
type GridXYZ interface {
	// Dims returns the dimensions of the grid.
	Dims() (c, r int)

	// Z returns the value of a grid value at (c, r).
	// It will panic if c or r are out of bounds for the grid.
	Z(c, r int) float64

	// X returns the coordinate for the column at the index c.
	// It will panic if c is out of bounds for the grid.
	X(c int) float64

	// Y returns the coordinate for the row at the index r.
	// It will panic if r is out of bounds for the grid.
	Y(r int) float64
}

// HeatMap implements the Plotter interface, drawing
// a heat map of the values in the GridXYZ field.