1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
const test = require('tape')
const cluster = require('../lib/cluster.js')
const A = {
type: 'Feature',
id: 'A',
properties: {},
geometry: {
type: 'Point',
coordinates: [0, 0]
}
}
const B = {
type: 'Feature',
id: 'B',
properties: {},
geometry: {
type: 'Point',
coordinates: [0, 0]
}
}
const C = {
type: 'Feature',
id: 'C',
properties: {},
geometry: {
type: 'Point',
coordinates: [0.000001, 0.000001]
}
}
const D = {
type: 'Feature',
id: 'D',
properties: {},
geometry: {
type: 'Point',
coordinates: [1, 1]
}
}
test('cluster', t => {
t.same(
cluster([], 100),
[],
'empty input returns empty output'
)
t.same(
cluster([A], 100),
[[A]],
'single feature input returns single feature output cluster'
)
t.same(
cluster([A, B], 100),
[[A, B]],
'overlapping points clustered'
)
t.same(
cluster([A, C], 100),
[[A, C]],
'nearby points clustered'
)
t.same(
cluster([A, D], 100),
[[A], [D]],
'far away points not clustered'
)
t.same(
cluster([A, B, C, D], 100),
[[A, B, C], [D]],
'some clustered others not'
)
t.end()
})
|
