// Plots the historgram using plotinum
func Histogram(r RetCalc) {
//eb := all_paths.End_balances()
eb := make([]float64, len(r.All_paths), len(r.All_paths))
incs := r.RunIncomes()
for i := range incs {
eb[i] = incs[i]
}
v := make(plotter.Values, len(eb))
for i := range v {
v[i] = eb[i]
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Histogram"
h, err := plotter.NewHist(v, 100)
if err != nil {
panic(err)
}
//h.Normalize(1)
p.Add(h)
if err := p.Save(4, 4, "hist.png"); err != nil {
panic(err)
}
fmt.Println(h)
}
// Example_quartPlots draws vertical quartile plots.
func Example_quartPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(plotter.Values, n)
normal := make(plotter.Values, n)
expon := make(plotter.Values, n)
for i := 0; i < n; i++ {
uniform[i] = rand.Float64()
normal[i] = rand.NormFloat64()
expon[i] = rand.ExpFloat64()
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Quartile Plot"
p.Y.Label.Text = "plotter.Values"
p.Add(must(plotter.NewQuartPlot(0, uniform)).(*plotter.QuartPlot),
must(plotter.NewQuartPlot(1, normal)).(*plotter.QuartPlot),
must(plotter.NewQuartPlot(2, expon)).(*plotter.QuartPlot))
// Set the X axis of the plot to nominal with
// the given names for x=0, x=1 and x=2.
p.NominalX("Uniform\nDistribution", "Normal\nDistribution",
"Exponential\nDistribution")
return p
}
func plotData(name string, us, ys, ts, fs []float64) {
p, err := plot.New()
if err != nil {
fmt.Printf("Cannot create new plot: %s\n", err)
return
}
p.Title.Text = "Least-square fit of convex function"
p.X.Min = -0.1
p.X.Max = 2.3
p.Y.Min = -1.1
p.Y.Max = 7.2
p.Add(plotter.NewGrid())
pts := plotter.NewScatter(dataset(us, ys))
pts.GlyphStyle.Color = color.RGBA{R: 255, A: 255}
fit := plotter.NewLine(dataset(ts, fs))
fit.LineStyle.Width = vg.Points(1)
fit.LineStyle.Color = color.RGBA{B: 255, A: 255}
p.Add(pts)
p.Add(fit)
if err := p.Save(4, 4, name); err != nil {
fmt.Printf("Save to '%s' failed: %s\n", name, err)
}
}
// Plot saves an image of the latency histogram to filePath. The extension of filePath defines
// the format to be used - png, svg, etc.
func Plot(h *latency.Histogram, description, filePath string) error {
count := len(h.Buckets)
xys := make(plotter.XYs, count)
for bucket, freq := range h.Buckets {
xys[bucket].X = float64(bucket)
xys[bucket].Y = float64(freq)
}
p, err := plot.New()
if err != nil {
return fmt.Errorf("error generating plot: %v", err)
}
p.Title.Text = description
p.X.Label.Text = fmt.Sprintf("Latency (%v resolution)", h.Resolution)
p.Y.Label.Text = "Frequency"
hh, err := plotter.NewHistogram(xys, count)
if err != nil {
return fmt.Errorf("error generating histogram: %v", err)
}
p.Add(hh)
// Save the plot to a file. Units in inches (one inch == 72 points).
fmt.Fprintf(os.Stderr, "Saving latency histogram to %v\n", filePath)
return p.Save(8, 6, filePath)
}
func test1() {
rand.Seed(int64(0))
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Plotutil example"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
err = plotutil.AddLinePoints(p,
"First", randomPoints(15),
"Second", randomPoints(15),
"Third", randomPoints(15))
if err != nil {
panic(err)
}
// Save the plot to a PNG file.
if err := p.Save(4, 4, "points.png"); err != nil {
panic(err)
}
}
func test_point() {
rand.Seed(int64(0))
points_data := randomPoint(200)
points_data2 := randomPoint(50)
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Points"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
bs, _ := plotter.NewBubbles(points_data, vg.Points(5), vg.Points(5))
bs2, _ := plotter.NewBubbles(points_data2, vg.Points(5), vg.Points(5))
bs.Color = color.RGBA{R: 255, G: 0, B: 0, A: 255}
bs2.Color = color.RGBA{R: 0, G: 255, B: 0, A: 255}
p.Add(bs)
p.Add(bs2)
if err := p.Save(10, 10, "points.png"); err != nil {
panic(err)
}
}
func plotData(name string, xs, ys []float64) {
p, err := plot.New()
if err != nil {
fmt.Printf("Cannot create new plot: %s\n", err)
return
}
p.Title.Text = "Chernoff lower bound"
p.X.Label.Text = "Sigma"
p.X.Min = 0.2
p.X.Max = 0.5
p.Y.Label.Text = "Probability of correct detection"
p.Y.Min = 0.9
p.Y.Max = 1.0
p.Add(plotter.NewGrid())
l := plotter.NewLine(dataset(xs, ys))
l.LineStyle.Width = vg.Points(1)
//l.LineStyle.Dashes = []vg.Length(vg.Points(5), vg.Points(5))
l.LineStyle.Color = color.RGBA{B: 255, A: 255}
p.Add(l)
if err := p.Save(4, 4, name); err != nil {
fmt.Printf("Save to '%s' failed: %s\n", name, err)
}
}
// Example_boxPlots draws vertical boxplots.
func Example_boxPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(plotter.Values, n)
normal := make(plotter.Values, n)
expon := make(plotter.Values, n)
for i := 0; i < n; i++ {
uniform[i] = rand.Float64()
normal[i] = rand.NormFloat64()
expon[i] = rand.ExpFloat64()
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Box Plot"
p.Y.Label.Text = "plotter.Values"
// Make boxes for our data and add them to the plot.
p.Add(plotter.NewBoxPlot(vg.Points(20), 0, uniform),
plotter.NewBoxPlot(vg.Points(20), 1, normal),
plotter.NewBoxPlot(vg.Points(20), 2, expon))
// Set the X axis of the plot to nominal with
// the given names for x=0, x=1 and x=2.
p.NominalX("Uniform\nDistribution", "Normal\nDistribution",
"Exponential\nDistribution")
return p
}
// draw is a generic plotter of labelled lines.
func draw(lines graph, title, xLabel, yLabel string) error {
p, err := plot.New()
if err != nil {
return fmt.Errorf(err.Error())
}
p.Title.Text = title
p.X.Label.Text = xLabel
p.Y.Label.Text = yLabel
i := 0
for legend, data := range lines {
i = i + 1
l, err := plotter.NewLine(xys(data))
if err != nil {
return fmt.Errorf(err.Error())
}
p.Add(l)
p.Legend.Add(legend, l)
l.LineStyle.Color = getColor(i)
}
if err != nil {
return fmt.Errorf(err.Error())
}
name := strings.Replace(strings.ToLower(title), " ", "-", -1)
filename := fmt.Sprintf("strategy-%s.svg", name)
if err := p.Save(8, 8, filename); err != nil {
return fmt.Errorf(err.Error())
}
return nil
}
func Example_groupedHorizontalQuartPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(plotter.Values, n)
normal := make(plotter.Values, n)
expon := make(plotter.Values, n)
for i := 0; i < n; i++ {
uniform[i] = rand.Float64()
normal[i] = rand.NormFloat64()
expon[i] = rand.ExpFloat64()
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Box Plot"
p.Y.Label.Text = "plotter.Values"
w := vg.Points(10)
for x := 0.0; x < 3.0; x++ {
b0 := must(plotter.MakeHorizQuartPlot(x, uniform)).(plotter.HorizQuartPlot)
b0.Offset = -w
b1 := must(plotter.MakeHorizQuartPlot(x, normal)).(plotter.HorizQuartPlot)
b2 := must(plotter.MakeHorizQuartPlot(x, expon)).(plotter.HorizQuartPlot)
b2.Offset = w
p.Add(b0, b1, b2)
}
p.Add(plotter.NewGlyphBoxes())
p.NominalY("Group 0", "Group 1", "Group 2")
return p
}
// Draw the plotinum logo.
func Example_logo() *plot.Plot {
p, err := plot.New()
if err != nil {
panic(err)
}
plotter.DefaultLineStyle.Width = vg.Points(1)
plotter.DefaultGlyphStyle.Radius = vg.Points(3)
p.Y.Tick.Marker = plot.ConstantTicks([]plot.Tick{
{0, "0"}, {0.25, ""}, {0.5, "0.5"}, {0.75, ""}, {1, "1"},
})
p.X.Tick.Marker = plot.ConstantTicks([]plot.Tick{
{0, "0"}, {0.25, ""}, {0.5, "0.5"}, {0.75, ""}, {1, "1"},
})
pts := plotter.XYs{{0, 0}, {0, 1}, {0.5, 1}, {0.5, 0.6}, {0, 0.6}}
line := must(plotter.NewLine(pts)).(*plotter.Line)
scatter := must(plotter.NewScatter(pts)).(*plotter.Scatter)
p.Add(line, scatter)
pts = plotter.XYs{{1, 0}, {0.75, 0}, {0.75, 0.75}}
line = must(plotter.NewLine(pts)).(*plotter.Line)
scatter = must(plotter.NewScatter(pts)).(*plotter.Scatter)
p.Add(line, scatter)
pts = plotter.XYs{{0.5, 0.5}, {1, 0.5}}
line = must(plotter.NewLine(pts)).(*plotter.Line)
scatter = must(plotter.NewScatter(pts)).(*plotter.Scatter)
p.Add(line, scatter)
return p
}
// Example_errBars draws points and error bars.
func Example_errBars() *plot.Plot {
type errPoints struct {
plotter.XYs
plotter.YErrors
plotter.XErrors
}
rand.Seed(int64(0))
n := 15
data := errPoints{
XYs: randomPoints(n),
YErrors: plotter.YErrors(randomError(n)),
XErrors: plotter.XErrors(randomError(n)),
}
p, err := plot.New()
if err != nil {
panic(err)
}
scatter := must(plotter.NewScatter(data)).(*plotter.Scatter)
scatter.Shape = plot.CrossGlyph{}
xerrs, err := plotter.NewXErrorBars(data)
if err != nil {
panic(err)
}
yerrs, err := plotter.NewYErrorBars(data)
if err != nil {
panic(err)
}
p.Add(scatter, xerrs, yerrs)
p.Add(plotter.NewGlyphBoxes())
return p
}
// An example of making a histogram.
func Example_histogram() *plot.Plot {
rand.Seed(int64(0))
n := 10000
vals := make(plotter.Values, n)
for i := 0; i < n; i++ {
vals[i] = rand.NormFloat64()
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Histogram"
h, err := plotter.NewHist(vals, 16)
if err != nil {
panic(err)
}
h.Normalize(1)
p.Add(h)
// The normal distribution function
norm := plotter.NewFunction(stdNorm)
norm.Color = color.RGBA{R: 255, A: 255}
norm.Width = vg.Points(2)
p.Add(norm)
return p
}
func main() {
// Get some random data.
n, m := 5, 10
pts := make([]plotter.XYer, n)
for i := range pts {
xys := make(plotter.XYs, m)
pts[i] = xys
center := float64(i)
for j := range xys {
xys[j].X = center + (rand.Float64() - 0.5)
xys[j].Y = center + (rand.Float64() - 0.5)
}
}
plt, err := plot.New()
if err != nil {
panic(err)
}
mean95 := plotutil.NewErrorPoints(plotutil.MeanAndConf95, pts...)
medMinMax := plotutil.NewErrorPoints(plotutil.MedianAndMinMax, pts...)
plotutil.AddLinePoints(plt,
"mean and 95% confidence", mean95,
"median and minimum and maximum", medMinMax)
plotutil.AddErrorBars(plt, mean95, medMinMax)
plotutil.AddScatters(plt, pts[0], pts[1], pts[2], pts[3], pts[4])
plt.Save(4, 4, "errpoints.png")
}
// createLine creates a line graph from provided x,y data and title
func createLine(xdat, ydat [][]float64, ylab []string, title string) {
p, err := plot.New()
if err != nil {
panic(err)
}
p.Add(plotter.NewGrid())
p.Title.Text = title
p.Legend.Top = true
p.Legend.XOffs = -10.0
p.Legend.YOffs = -10.0
var scatdata xyer
var s *plotter.Line
for i, _ := range ydat {
scatdata = xyer{xdat[i], ydat[i]}
s = plotter.NewLine(scatdata)
s.LineStyle.Width = 2
s.LineStyle.Color = cols[i]
p.Add(s)
p.Legend.Add(ylab[i], s)
}
p.X.Max = 2.5
p.Y.Max = 3.5
p.X.Label.Text = "Time / ps"
p.Y.Label.Text = "Probability density"
if err := p.Save(5, 5, "out/"+title+".png"); err != nil {
panic(err)
}
}
func plotLine(xy plotter.XYs) (image.Image, error) {
p, err := plot.New()
if err != nil {
return nil, err
}
p.HideAxes()
p.BackgroundColor = &color.RGBA{0, 0, 0, 255}
//s, err := NewSparkLines(xy)
s, err := plotter.NewLine(xy)
if err != nil {
return nil, err
}
s.Color = &color.RGBA{0, 255, 0, 128}
p.Add(s)
// Draw the plot to an in-memory image.
// _, rows, _ := terminal.GetSize(0)
charWidth := optCharWidth
charHeight := optCharHeight
//width := cols * charWidth
height := optRows * charHeight
img := image.NewRGBA(image.Rect(0, 0, 5+(len(xy)*charWidth), height))
canvas := vgimg.NewImage(img)
da := plot.MakeDrawArea(canvas)
p.Draw(da)
return img, nil
}
// Example_groupedBoxPlots draws vertical boxplots.
func Example_groupedBoxPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(plotter.Values, n)
normal := make(plotter.Values, n)
expon := make(plotter.Values, n)
for i := 0; i < n; i++ {
uniform[i] = rand.Float64()
normal[i] = rand.NormFloat64()
expon[i] = rand.ExpFloat64()
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Box Plot"
p.Y.Label.Text = "plotter.Values"
w := vg.Points(20)
for x := 0.0; x < 3.0; x++ {
b0 := must(plotter.NewBoxPlot(w, x, uniform)).(*plotter.BoxPlot)
b0.Offset = -w - vg.Points(3)
b1 := must(plotter.NewBoxPlot(w, x, normal)).(*plotter.BoxPlot)
b2 := must(plotter.NewBoxPlot(w, x, expon)).(*plotter.BoxPlot)
b2.Offset = w + vg.Points(3)
p.Add(b0, b1, b2)
}
// Set the X axis of the plot to nominal with
// the given names for x=0, x=1 and x=2.
p.NominalX("Group 0", "Group 1", "Group 2")
return p
}
// Example_functions draws some functions.
func Example_functions() *plot.Plot {
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Functions"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
quad := plotter.NewFunction(func(x float64) float64 { return x * x })
quad.Color = color.RGBA{B: 255, A: 255}
exp := plotter.NewFunction(func(x float64) float64 { return math.Pow(2, x) })
exp.Dashes = []vg.Length{vg.Points(2), vg.Points(2)}
exp.Width = vg.Points(2)
exp.Color = color.RGBA{G: 255, A: 255}
sin := plotter.NewFunction(func(x float64) float64 { return 10*math.Sin(x) + 50 })
sin.Dashes = []vg.Length{vg.Points(4), vg.Points(5)}
sin.Width = vg.Points(4)
sin.Color = color.RGBA{R: 255, A: 255}
p.Add(quad, exp, sin)
p.Legend.Add("x^2", quad)
p.Legend.Add("2^x", exp)
p.Legend.Add("10*sin(x)+50", sin)
p.Legend.ThumbnailWidth = vg.Inches(0.5)
p.X.Min = 0
p.X.Max = 10
p.Y.Min = 0
p.Y.Max = 100
return p
}
func main() {
var maxworker = *flag.Int("maxworkers", MAXWORKER, "Maxworker")
var queryNum = *flag.Int("qpr", QN, "query per worker")
flag.Parse()
fmt.Println(maxworker, queryNum)
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Query per second"
p.X.Label.Text = "query number"
p.Y.Label.Text = "query per second"
pts := make(plotter.XYs, queryNum)
for i := 10; i <= maxworker; i = i + 3 {
for j := 1; j <= queryNum; j++ {
val := mainLoop(i, j)
pts[j-1].X = float64(j)
pts[j-1].Y = val
}
err = plotutil.AddLinePointsColor(p, i, "Number of worker "+strconv.Itoa(i), pts)
if err != nil {
panic(err)
}
}
if err := p.Save(4, 4, "points.png"); err != nil {
panic(err)
}
}
func histPlot() *plot.Plot {
// Draw some random values from the standard
// normal distribution.
rand.Seed(int64(0))
v := make(plotter.Values, 1000)
for i := range v {
v[i] = rand.NormFloat64()
}
// Make a plot and set its title.
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Histogram"
// Create a histogram of our values drawn
// from the standard normal.
h, err := plotter.NewHist(v, 16)
if err != nil {
panic(err)
}
// Normalize the area under the histogram to
// sum to one.
h.Normalize(1)
p.Add(h)
// The normal distribution function
norm := plotter.NewFunction(stdNorm)
norm.Color = color.RGBA{R: 255, A: 255}
norm.Width = vg.Points(2)
p.Add(norm)
return p
}
func main() {
fmt.Println("Running...")
start := time.Now()
A2 = make([]float64, 2)
A3 = make([]float64, 3)
A1 = 1
A2[0] = 1.0 / (3.0 * LaguerreD(2, z2[0]) * Laguerre(3, z2[0]))
A2[1] = 1.0 / (3.0 * LaguerreD(2, z2[1]) * Laguerre(3, z2[1]))
A3[0] = 1.0 / (4.0 * LaguerreD(3, z3[0]) * Laguerre(4, z3[0]))
A3[1] = 1.0 / (4.0 * LaguerreD(3, z3[1]) * Laguerre(4, z3[1]))
A3[2] = 1.0 / (4.0 * LaguerreD(3, z3[2]) * Laguerre(4, z3[2]))
pt = make(plotter.XYs, nPlot)
x = make([]float64, nPlot)
dx := (xmax - xmin) / float64(nPlot-1)
for i := range x {
x[i] = dx*float64(i) + xmin
pt[i].X = x[i]
pt[i].Y = (math.Gamma(x[i]))
}
var p1, p2, p3 plotter.XYs
p1 = make(plotter.XYs, nPlot)
p2 = make(plotter.XYs, nPlot)
p3 = make(plotter.XYs, nPlot)
for i := range x {
p1[i].X = x[i]
p2[i].X = x[i]
p3[i].X = x[i]
p1[i].Y = (A1 * math.Pow(z1, x[i]-1))
p2[i].Y = (A2[0]*math.Pow(z2[0], x[i]-1) + A2[1]*math.Pow(z2[1], x[i]-1))
p3[i].Y = (A3[0]*math.Pow(z3[0], x[i]-1) + A3[1]*math.Pow(z3[1], x[i]-1) + A3[2]*math.Pow(z3[2], x[i]-1))
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = fmt.Sprintf("Gamma Function Approximations")
p.Y.Label.Text = "Log(y)"
p.X.Label.Text = "x"
plotutil.AddLinePoints(p, "Log(Gamma)", pt, "m=0", p1, "m=1", p2, "m=2", p3)
// Save the plot to a PNG file.
if err := p.Save(6, 4, "gammaLow.png"); err != nil {
panic(err)
}
fmt.Println(time.Since(start))
fmt.Println("...program terminated successfully!")
}
func main() {
if len(os.Args) != 2 {
fmt.Fprintf(os.Stderr, "Usage: simpleRead <file.wav>\n")
os.Exit(1)
}
// open file
testInfo, err := os.Stat(os.Args[1])
checkErr(err)
testWav, err := os.Open(os.Args[1])
checkErr(err)
wavReader, err := wav.NewWavReader(testWav, testInfo.Size())
checkErr(err)
// File informations
fmt.Println(wavReader)
// limit sample count
sampleCnt := wavReader.GetSampleCount()
if sampleCnt > 10000 {
sampleCnt = 10000
}
// setup plotter
p, err := plot.New()
checkErr(err)
p.Title.Text = "Waveplot"
p.X.Label.Text = "t"
p.Y.Label.Text = "Ampl"
pts := make(plotter.XYs, sampleCnt)
// read samples and construct points for plot
for i := range pts {
n, err := wavReader.ReadSample()
if err == io.EOF {
break
}
checkErr(err)
pts[i].X = float64(i)
pts[i].Y = float64(n)
}
err = plotutil.AddLinePoints(p, "", pts)
checkErr(err)
// construct output filename
inputFname := path.Base(os.Args[1])
plotFname := strings.Split(inputFname, ".")[0] + ".png"
if err := p.Save(10, 4, plotFname); err != nil {
panic(err)
}
}
func main() {
fmt.Println("Running...")
start := time.Now()
count := 0
pt = make([]plotter.XYs, 0)
for n := nMin; n <= nMax; n *= 2 {
y1 = make([]float64, n)
y2 = make([]float64, n)
pt = append(pt, make(plotter.XYs, n))
y1[0] = 1.0
y2[0] = 3.0
h = (tMax - tMin) / float64(n-1)
for i := 1; i < n; i++ {
y1[i] = y1[i-1] + 2*y1[i-1]*(1-y2[i-1])*h
y2[i] = y2[i-1] - y2[i-1]*(1-y1[i-1])*h
}
for i := 0; i < n; i++ {
pt[count][i].X = y1[i]
pt[count][i].Y = y2[i]
}
count++
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = fmt.Sprintf("Enright and Pryce #B1:Euler")
p.Y.Label.Text = "y2(t)"
p.X.Label.Text = "y1(t)"
n := nMin
for i := 0; i < count; i++ {
l := plotter.NewLine(pt[i])
l.LineStyle.Width = vg.Points(1)
l.LineStyle.Color = color.RGBA{R: 255 / uint8(i+1), G: 255 / uint8(i+1),
B: 255 / uint8(i+1), A: 255}
p.Add(l)
n *= 2
}
p.X.Min = 0
p.X.Max = 6.5
p.Y.Min = 0
p.Y.Max = 6.5
// Save the plot to a PNG file.
if err := p.Save(6, 6, "euler_test.png"); err != nil {
panic(err)
}
fmt.Println(time.Since(start))
fmt.Println("...program terminated successfully!")
}
func DataTableToPng(b *bytes.Buffer, dt *db.DataTable, title string, width, height float64, xLabel string) error {
p, err := plot.New()
if err != nil {
return err
}
p.Title.Text = title
p.X.Label.Text = xLabel
p.Y.Label.Text = "msec" // TODO: Fix this.
// TODO: need new ticker function to handle equalX (while keeping xLabel as selected)
if xLabel == common.TimeName {
p.X.Tick.Marker = TimeTicks
}
p.Legend.Top = true
numColumns := len(dt.ColumnNames)
lines := make([]plotter.XYs, numColumns-1) // Skip X column.
for _, dRow := range dt.Data {
xp := (*dRow)[0]
if xp != nil {
for col := 1; col < numColumns; col++ { // Skip X column.
yp := (*dRow)[col]
if yp != nil {
lines[col-1] = append(lines[col-1], struct{ X, Y float64 }{X: *xp, Y: *yp})
}
}
}
}
colorList := getColors(numColumns - 1) // Skip X column.
for i, line := range lines {
columnName := dt.ColumnNames[i+1]
l, err := plotter.NewLine(line)
if err != nil {
return err
}
if strings.Index(columnName, common.RegressNamePrefix) == 0 { // If regression value.
l.LineStyle.Color = color.RGBA{255, 0, 0, 255}
l.LineStyle.Width = vg.Points(2.0)
} else {
l.LineStyle.Color = colorList[i]
l.LineStyle.Width = vg.Points(1.5)
}
p.Add(l)
p.Legend.Add(columnName, l)
}
tPng := time.Now()
drawPng(b, p, width, height)
glog.V(3).Infof("PERF: makePng time: %v", time.Now().Sub(tPng))
return nil
}
func linesPlot() *plot.Plot {
// Get some random points
rand.Seed(int64(0))
n := 10
scatterData := randomPoints(n)
lineData := randomPoints(n)
linePointsData := randomPoints(n)
// Create a new plot, set its title and
// axis labels.
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Points Example"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
// Draw a grid behind the data
p.Add(plotter.NewGrid())
// Make a scatter plotter and set its style.
s, err := plotter.NewScatter(scatterData)
if err != nil {
panic(err)
}
s.GlyphStyle.Color = color.RGBA{R: 255, B: 128, A: 255}
// Make a line plotter and set its style.
l, err := plotter.NewLine(lineData)
if err != nil {
panic(err)
}
l.LineStyle.Width = vg.Points(1)
l.LineStyle.Dashes = []vg.Length{vg.Points(5), vg.Points(5)}
l.LineStyle.Color = color.RGBA{B: 255, A: 255}
// Make a line plotter with points and set its style.
lpLine, lpPoints, err := plotter.NewLinePoints(linePointsData)
if err != nil {
panic(err)
}
lpLine.Color = color.RGBA{G: 255, A: 255}
lpPoints.Shape = plot.PyramidGlyph{}
lpPoints.Color = color.RGBA{R: 255, A: 255}
// Add the plotters to the plot, with a legend
// entry for each
p.Add(s, l, lpLine, lpPoints)
p.Legend.Add("scatter", s)
p.Legend.Add("line", l)
p.Legend.Add("line points", lpLine, lpPoints)
return p
}
// Example_horizontalQuartPlots draws horizontal quartile plots
// with some labels on their points.
func Example_horizontalQuartPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(valueLabels, n)
normal := make(valueLabels, n)
expon := make(valueLabels, n)
for i := 0; i < n; i++ {
uniform[i].Value = rand.Float64()
uniform[i].Label = fmt.Sprintf("%4.4f", uniform[i].Value)
normal[i].Value = rand.NormFloat64()
normal[i].Label = fmt.Sprintf("%4.4f", normal[i].Value)
expon[i].Value = rand.ExpFloat64()
expon[i].Label = fmt.Sprintf("%4.4f", expon[i].Value)
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Horizontal Quartile Plot"
p.X.Label.Text = "plotter.Values"
// Make boxes for our data and add them to the plot.
uniBox := must(plotter.MakeHorizQuartPlot(0, uniform)).(plotter.HorizQuartPlot)
uniLabels, err := uniBox.OutsideLabels(uniform)
if err != nil {
panic(err)
}
normBox := must(plotter.MakeHorizQuartPlot(1, normal)).(plotter.HorizQuartPlot)
normLabels, err := normBox.OutsideLabels(normal)
if err != nil {
panic(err)
}
expBox := must(plotter.MakeHorizQuartPlot(2, expon)).(plotter.HorizQuartPlot)
expLabels, err := expBox.OutsideLabels(expon)
if err != nil {
panic(err)
}
p.Add(uniBox, uniLabels, normBox, normLabels, expBox, expLabels)
// Add a GlyphBox plotter for debugging.
p.Add(plotter.NewGlyphBoxes())
// Set the Y axis of the plot to nominal with
// the given names for y=0, y=1 and y=2.
p.NominalY("Uniform\nDistribution", "Normal\nDistribution",
"Exponential\nDistribution")
return p
}
func main() {
tests := []*Test{}
// if file, err := os.Open("results.txt"); err != nil {
if file, err := os.Stdin, error(nil); err != nil {
log.Fatal(err)
} else {
scanner := bufio.NewScanner(file)
for scanner.Scan() {
test, err := ParseLine(scanner.Text())
if err != nil {
continue
}
test.Calculate()
tests = append(tests, test)
}
}
if len(tests) == 0 {
log.Fatal("No tests found.")
}
if plt, err := plot.New(); err != nil {
log.Fatal(err)
} else {
for i, test := range tests {
xys := test.ToXY(100000.0)
line, err := plotter.NewLine(xys)
if err != nil {
log.Fatal(err)
}
line.Color, line.Dashes = plotutil.Color(i), plotutil.Dashes(0)
plt.Add(line)
{
name := fmt.Sprintf("%s (%d)", test.Name, int(test.Stats.Mean/100000))
plt.Legend.Add(name, line)
}
}
// plt.Legend.Font.Size = vg.Inches(plt.Legend.Font.Size * 0.75)
plt.Legend.Font.Size *= 0.65
plt.Legend.Top = true
plt.Legend.Left = true
// plt.Legend.YOffs = vg.Inches(-1.12)
// plt.Legend.XOffs = vg.Inches(1)
plt.HideX()
// plt.X.Padding = 20
plt.Y.Min = 0
plt.Y.Max = 1600
plt.Title.Text = fmt.Sprintf("Speed Test (averaged over %d runs and %d tests)", 100000, 100)
plt.Y.Label.Text = "Cycles"
plt.Save(6, 4, "number-parse.svg")
}
}
func GenerateGraph(teamName string, pythagorean, reals []float64) {
p, _ := plot.New()
p.Title.Text = teamName
p.X.Label.Text = "Day"
p.Y.Label.Text = "Parcentage"
p.X.Min = 0.0
p.X.Max = 38.0
p.Y.Min = 0.0
p.Y.Max = 100.0
plotutil.AddLinePoints(p, "", GeneratePlot(pythagorean), GeneratePlot(reals))
width := 4.0
height := 4.0
p.Save(width, height, fmt.Sprintf("%s.png", teamName))
}
func main() {
fmt.Println("Running...")
start := time.Now()
ev = make([]float64, 0)
for n := nmin; n <= nmax; n *= 2 {
sum := 0.0
dx := (xmax - xmin) / float64(n)
dy := (ymax - ymin) / float64(n)
y = make([]float64, n)
x = make([]float64, n)
for k := 0; k < n; k++ {
x[k] = float64(k)*dx + 0.5*dx + xmin
y[k] = (float64(k)*dy + 0.5*dy + ymin)
}
for i := 0; i < n; i++ {
for j := 0; j < n; j++ {
sum += math.Exp(x[i]*y[j]) * dx * dy
}
}
ev = append(ev, EXACT_VALUE-sum)
}
var pt plotter.XYs
pt = make(plotter.XYs, len(ev))
for i := range pt {
pt[i].X = math.Log10(float64(nmin) * math.Pow(2, float64(i)))
pt[i].Y = math.Log10(math.Abs(ev[i]))
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = fmt.Sprintf("Error of Midpoint Integral")
p.X.Label.Text = "n"
p.Y.Label.Text = "Log(|err|)"
plotutil.AddLinePoints(p, pt)
// Save the plot to a PNG file.
if err := p.Save(6, 4, "error_hw12.png"); err != nil {
panic(err)
}
fmt.Println(time.Since(start))
fmt.Println("...program terminated successfully!")
}
// Example_verticalBoxPlots draws vertical boxplots
// with some labels on their points.
func Example_verticalBoxPlots() *plot.Plot {
rand.Seed(int64(0))
n := 100
uniform := make(valueLabels, n)
normal := make(valueLabels, n)
expon := make(valueLabels, n)
for i := 0; i < n; i++ {
uniform[i].Value = rand.Float64()
uniform[i].Label = fmt.Sprintf("%4.4f", uniform[i].Value)
normal[i].Value = rand.NormFloat64()
normal[i].Label = fmt.Sprintf("%4.4f", normal[i].Value)
expon[i].Value = rand.ExpFloat64()
expon[i].Label = fmt.Sprintf("%4.4f", expon[i].Value)
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Box Plot"
p.Y.Label.Text = "plotter.Values"
// Make boxes for our data and add them to the plot.
uniBox := must(plotter.NewBoxPlot(vg.Points(20), 0, uniform)).(*plotter.BoxPlot)
uniLabels, err := uniBox.OutsideLabels(uniform)
if err != nil {
panic(err)
}
normBox := must(plotter.NewBoxPlot(vg.Points(20), 1, normal)).(*plotter.BoxPlot)
normLabels, err := normBox.OutsideLabels(normal)
if err != nil {
panic(err)
}
expBox := must(plotter.NewBoxPlot(vg.Points(20), 2, expon)).(*plotter.BoxPlot)
expLabels, err := expBox.OutsideLabels(expon)
if err != nil {
panic(err)
}
p.Add(uniBox, uniLabels, normBox, normLabels, expBox, expLabels)
// Set the X axis of the plot to nominal with
// the given names for x=0, x=1 and x=2.
p.NominalX("Uniform\nDistribution", "Normal\nDistribution",
"Exponential\nDistribution")
return p
}