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
|
"""
Population of Falkensee from 1875 to 2014
-----------------------------------------
This example is a reproduction of the Falkensee plot found in the Vega-Lite examples.
"""
# category: case studies
import altair as alt
import pandas as pd
source = [
{"year": "1875", "population": 1309},
{"year": "1890", "population": 1558},
{"year": "1910", "population": 4512},
{"year": "1925", "population": 8180},
{"year": "1933", "population": 15915},
{"year": "1939", "population": 24824},
{"year": "1946", "population": 28275},
{"year": "1950", "population": 29189},
{"year": "1964", "population": 29881},
{"year": "1971", "population": 26007},
{"year": "1981", "population": 24029},
{"year": "1985", "population": 23340},
{"year": "1989", "population": 22307},
{"year": "1990", "population": 22087},
{"year": "1991", "population": 22139},
{"year": "1992", "population": 22105},
{"year": "1993", "population": 22242},
{"year": "1994", "population": 22801},
{"year": "1995", "population": 24273},
{"year": "1996", "population": 25640},
{"year": "1997", "population": 27393},
{"year": "1998", "population": 29505},
{"year": "1999", "population": 32124},
{"year": "2000", "population": 33791},
{"year": "2001", "population": 35297},
{"year": "2002", "population": 36179},
{"year": "2003", "population": 36829},
{"year": "2004", "population": 37493},
{"year": "2005", "population": 38376},
{"year": "2006", "population": 39008},
{"year": "2007", "population": 39366},
{"year": "2008", "population": 39821},
{"year": "2009", "population": 40179},
{"year": "2010", "population": 40511},
{"year": "2011", "population": 40465},
{"year": "2012", "population": 40905},
{"year": "2013", "population": 41258},
{"year": "2014", "population": 41777},
]
source2 = [
{"start": "1933", "end": "1945", "event": "Nazi Rule"},
{"start": "1948", "end": "1989", "event": "GDR (East Germany)"},
]
source_df = pd.DataFrame(source)
source2_df = pd.DataFrame(source2)
line = alt.Chart(source_df).mark_line(color="#333").encode(
x=alt.X("year:T", axis=alt.Axis(format="%Y"), title="Year"),
y=alt.Y("population", title="Population"),
)
point = line.mark_point(color="#333")
rect = alt.Chart(source2_df).mark_rect().encode(
x="start:T",
x2="end:T",
color=alt.Color("event:N", title="Event")
)
(rect + line + point).properties(
title="Population of Falkensee from 1875 to 2014",
width=500,
height=300
)
|
