matpi

README

matpi

Convert matrix from gonum.mat.Matrix to PNG picture. Non-zero matrix element is black.

Example:

	m := mat.NewDense(100, 80, nil)
	for i := 0; i < 80; i++ {
		m.Set(i, i, 1.0)
	}

	err := matpi.Convert(m, "result.png", matpi.NewConfig())
	if err != nil {
		return
	}

Documentation

Index

• func Convert(m mat.Matrix, filename string, config *Config) error
• type Config
  • func NewConfig() *Config

Examples

• Convert

Functions

func Convert

func Convert(m mat.Matrix, filename string, config *Config) error

Convert matrix 'gonum.mat.Matrix' to PNG picture file with filename. Color of picture pixel in according to `config`.

Example

package main

import (
	"github.com/Konstantin8105/matpi"
	"gonum.org/v1/gonum/mat"
)

func main() {
	m := mat.NewDense(100, 80, nil)
	for i := 0; i < 80; i++ {
		m.Set(i, i, 1.0)
		m.Set(i, 79-i, -1.0)
	}

	err := matpi.Convert(m, "result.png", matpi.NewConfig())
	if err != nil {
		panic(err)
	}
}

Types

type Config

type Config struct {
	// color of positive value
	PositiveColor color.RGBA

	// color of negative value
	NegativeColor color.RGBA

	// color of zero value
	ZeroColor color.RGBA

	// scale of picture
	Scale int
}

Config is configuration of matrix picture

func NewConfig

func NewConfig() *Config

NewConfig is default configuration