citygrid

type Frequency ¶

type Frequency []float64

func CreateFrequency(h *Histogram, index int) Frequency

func CreateMaxFrequency(h *Histogram) Frequency

type HSL ¶

type HSL struct {
	H, S, L float64
}

HSL represents a cylindrical coordinate of points in an RGB color model.

Values are in the range 0 to 1.

func (c HSL) RGBA() (uint32, uint32, uint32, uint32)

type HSV ¶

type HSV struct {
	H, S, V float64
}

HSV represents a cylindrical coordinate of points in an RGB color model.

Values are in the range 0 to 1.

func (c HSV) RGBA() (uint32, uint32, uint32, uint32)

type Histogram ¶

type Histogram struct {
	Width  int
	Height int
	Blocks [][]int
	// contains filtered or unexported fields
}

func AutoHeightHistogram(width int, extrema Rect) *Histogram

func (h *Histogram) CountLocations(locations []Location)

type Location ¶

type Location interface {
	LatLong() (float64, float64)
}

All we need from addresses is their latitude and longitude

type LocationParser ¶

type LocationParser interface {
	Parse(*os.File) ([]Location, error)
}

Given a file of addresses, return a list of locations

type Rect ¶

type Rect struct {
	// contains filtered or unexported fields
}

func Extrema(minX, minY, maxX, maxY float64) (rect Rect)

func LocationExtrema(locations []Location) (rect Rect)

func LocationExtrema999(locations []Location) (rect Rect)

func LocationExtrema9999(locations []Location) (rect Rect)

type Simple ¶

type Simple struct {
	Latitude  float64
	Longitude float64
}

A simple implementation of the location interface

func (s Simple) LatLong() (float64, float64)