86 lines
1.5 KiB
Go
86 lines
1.5 KiB
Go
|
// Copyright 2016 The Go 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 fit
|
||
|
|
|
||
|
|
import (
|
||
|
|
"testing"
|
||
|
|
|
||
|
|
"github.com/aclements/go-moremath/internal/mathtest"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestLOESS_NIST(t *testing.T) {
|
||
|
|
// LOWESS example from the NIST handbook.
|
||
|
|
xs := []float64{0.5578196,
|
||
|
|
2.0217271,
|
||
|
|
2.5773252,
|
||
|
|
3.4140288,
|
||
|
|
4.3014084,
|
||
|
|
4.7448394,
|
||
|
|
5.1073781,
|
||
|
|
6.5411662,
|
||
|
|
6.7216176,
|
||
|
|
7.2600583,
|
||
|
|
8.1335874,
|
||
|
|
9.1224379,
|
||
|
|
11.9296663,
|
||
|
|
12.3797674,
|
||
|
|
13.2728619,
|
||
|
|
14.2767453,
|
||
|
|
15.3731026,
|
||
|
|
15.6476637,
|
||
|
|
18.5605355,
|
||
|
|
18.5866354,
|
||
|
|
18.7572812,
|
||
|
|
}
|
||
|
|
ys := []float64{18.63654,
|
||
|
|
103.49646,
|
||
|
|
150.35391,
|
||
|
|
190.51031,
|
||
|
|
208.70115,
|
||
|
|
213.71135,
|
||
|
|
228.49353,
|
||
|
|
233.55387,
|
||
|
|
234.55054,
|
||
|
|
223.89225,
|
||
|
|
227.68339,
|
||
|
|
223.91982,
|
||
|
|
168.01999,
|
||
|
|
164.95750,
|
||
|
|
152.61107,
|
||
|
|
160.78742,
|
||
|
|
168.55567,
|
||
|
|
152.42658,
|
||
|
|
221.70702,
|
||
|
|
222.69040,
|
||
|
|
243.18828,
|
||
|
|
}
|
||
|
|
|
||
|
|
defer mathtest.SetAeqDigits(mathtest.SetAeqDigits(7))
|
||
|
|
mathtest.WantFunc(t, "LOESS", LOESS(xs, ys, 1, 0.33),
|
||
|
|
map[float64]float64{
|
||
|
|
0.5578196: 20.59302,
|
||
|
|
2.0217271: 107.1603,
|
||
|
|
2.5773252: 139.7674,
|
||
|
|
3.4140288: 174.2630,
|
||
|
|
4.301408: 207.2334,
|
||
|
|
4.744839: 216.6616,
|
||
|
|
5.107378: 220.5445,
|
||
|
|
6.541166: 229.8607,
|
||
|
|
6.721618: 229.8347,
|
||
|
|
7.260058: 229.4301,
|
||
|
|
8.133587: 226.6045,
|
||
|
|
9.122438: 220.3904,
|
||
|
|
11.929666: 172.3480,
|
||
|
|
12.379767: 163.8417,
|
||
|
|
13.272862: 161.8490,
|
||
|
|
14.27675: 160.3351,
|
||
|
|
15.37310: 160.1920,
|
||
|
|
15.64766: 161.0556,
|
||
|
|
18.56054: 227.3400,
|
||
|
|
18.58664: 227.8985,
|
||
|
|
18.75728: 231.5586,
|
||
|
|
})
|
||
|
|
}
|