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// Copyright ©2015 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package plotutil_test
import (
"golang.org/x/exp/rand"
"gonum.org/v1/plot"
"gonum.org/v1/plot/plotter"
"gonum.org/v1/plot/plotutil"
)
func ExampleErrorPoints() {
rnd := rand.New(rand.NewSource(1))
// 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 + (rnd.Float64() - 0.5)
xys[j].Y = center + (rnd.Float64() - 0.5)
}
}
plt, err := plot.New()
if err != nil {
panic(err)
}
mean95, err := plotutil.NewErrorPoints(plotutil.MeanAndConf95, pts...)
if err != nil {
panic(err)
}
medMinMax, err := plotutil.NewErrorPoints(plotutil.MedianAndMinMax, pts...)
if err != nil {
panic(err)
}
err = plotutil.AddLinePoints(plt,
"mean and 95% confidence", mean95,
"median and minimum and maximum", medMinMax)
if err != nil {
panic(err)
}
if err := plotutil.AddErrorBars(plt, mean95, medMinMax); err != nil {
panic(err)
}
if err := plotutil.AddScatters(plt, pts[0], pts[1], pts[2], pts[3], pts[4]); err != nil {
panic(err)
}
err = plt.Save(4, 4, "centroids.png")
if err != nil {
panic(err)
}
}
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