How alike the climates of twelve European capitals are
Twelve capitals and how far apart their climates are. chartlet joins the two closest again and again (average linkage) and draws every join at its distance; the warm south, the west and centre, and the north fall apart into their groups. The description names the closest pair and the last join, the table every join. Illustrative values.
How alike the climates of twelve European capitals are
examples/climate-similarity.json{
"schemaVersion": 1,
"type": "tree",
"title": "How alike the climates of twelve European capitals are",
"source": "Mean temperature and precipitation, illustrative values",
"width": 720,
"height": 440,
"tree": {
"distances": {
"labels": [
"Lisbon",
"Madrid",
"Rome",
"Athens",
"Paris",
"London",
"Berlin",
"Warsaw",
"Oslo",
"Stockholm",
"Helsinki",
"Vienna"
],
"matrix": [
[
0,
5.4,
2,
5.2,
5.4,
6.5,
7.9,
9.4,
11.5,
10.9,
11.7,
7.3
],
[
5.4,
0,
6,
3.5,
4.4,
4.7,
5.5,
6.8,
10.5,
8.2,
9.8,
5.6
],
[
2,
6,
0,
6.8,
4.2,
5.4,
6.8,
8.2,
9.8,
9.7,
10.2,
6
],
[
5.2,
3.5,
6.8,
0,
7.3,
7.9,
8.9,
10.3,
13.8,
11.7,
13.2,
8.8
],
[
5.4,
4.4,
4.2,
7.3,
0,
1.2,
2.6,
4.1,
6.6,
5.5,
6.4,
1.9
],
[
6.5,
4.7,
5.4,
7.9,
1.2,
0,
1.4,
2.9,
5.9,
4.4,
5.5,
1
],
[
7.9,
5.5,
6.8,
8.9,
2.6,
1.4,
0,
1.5,
5,
3,
4.3,
0.9
],
[
9.4,
6.8,
8.2,
10.3,
4.1,
2.9,
1.5,
0,
4.2,
1.5,
3.1,
2.2
],
[
11.5,
10.5,
9.8,
13.8,
6.6,
5.9,
5,
4.2,
0,
3.7,
1.8,
4.9
],
[
10.9,
8.2,
9.7,
11.7,
5.5,
4.4,
3,
1.5,
3.7,
0,
2.1,
3.6
],
[
11.7,
9.8,
10.2,
13.2,
6.4,
5.5,
4.3,
3.1,
1.8,
2.1,
0,
4.5
],
[
7.3,
5.6,
6,
8.8,
1.9,
1,
0.9,
2.2,
4.9,
3.6,
4.5,
0
]
]
}
}
}Source: Mean temperature and precipitation, illustrative values
Show chart data
| Step | Joins | Distance | Items |
|---|---|---|---|
| 1 | Berlin + Vienna | 0.9 | 2 |
| 2 | Paris + London | 1.2 | 2 |
| 3 | Warsaw + Stockholm | 1.5 | 2 |
| 4 | {Paris, London} + {Berlin, Vienna} | 1.725 | 4 |
| 5 | Oslo + Helsinki | 1.8 | 2 |
| 6 | Lisbon + Rome | 2 | 2 |
| 7 | {Warsaw, Stockholm} + {Oslo, Helsinki} | 3.275 | 4 |
| 8 | Madrid + Athens | 3.5 | 2 |
| 9 | {Paris, London, Berlin, … +1} + {Warsaw, Stockholm, Oslo, … +1} | 4.39375 | 8 |
| 10 | {Lisbon, Rome} + {Madrid, Athens} | 5.85 | 4 |
| 11 | {Lisbon, Rome, Madrid, … +1} + {Paris, London, Berlin, … +5} | 8.384375 | 12 |