jenks71: Illinois 1959 county gross farm product value per acre

In classInt: Choose Univariate Class Intervals

Description

Classic data set for the choice of class intervals for choropleth maps.

Usage

data(jenks71)

Format

A data frame with 102 observations on the following 2 variables.

jenks71

a numeric vector: Per acre value of gross farm products in dollars by county for Illinois in 1959

area

a numeric vector: county area in square miles

Source

Jenks, G. F., Caspall, F. C., 1971. "Error on choroplethic maps: definition, measurement, reduction". Annals, Association of American Geographers, 61 (2), 217–244

Examples

data(jenks71)
(jenks71)

Example output

    jenks71      area
1     50.12  619.1250
2     83.90  564.8666
3     76.43  519.2851
4     71.61  470.0023
5     79.66  611.0690
6     84.84  281.9802
7     87.87  763.3878
8     92.45  465.8562
9    119.90  524.0520
10   155.30  957.0728
11   131.50  634.9357
12   111.80  336.5958
13    96.78  697.2824
14    86.75  729.3617
15    62.41  849.4304
16    96.37  322.6725
17    75.51  451.4319
18    77.29 1147.8980
19    85.41  873.4952
20   116.40  825.9242
21    58.50  430.4035
22    75.29  569.4754
23    66.32  172.2371
24    62.65  681.3121
25    80.45  288.2996
26    72.76  720.1658
27    63.67  398.5411
28    60.27 1045.4367
29    68.45  395.4899
30   100.10  543.6524
31    55.30 1117.9663
32    54.07  486.3734
33    57.49  631.0993
34    73.52  542.7184
35    68.25 1186.3229
36    64.28  658.0177
37    50.64  883.1348
38    52.47  815.7020
39    68.19  590.6621
40    57.40  902.1977
41    39.72  563.7366
42    60.66  997.4052
43    57.59  619.1182
44    38.22  441.7262
45    57.22  405.0457
46    67.04  440.3459
47    47.29  872.4719
48    71.05  315.5443
49    50.53  383.6820
50    34.63  307.4830
51    59.65  585.2796
52    62.06  877.4056
53    52.89  624.1747
54    56.35  417.3518
55    57.26  572.6364
56    53.77  849.8499
57    59.89  715.7982
58    55.44  344.4581
59    45.40  252.9370
60    52.21  510.0139
61    49.38  767.9963
62    51.15  709.8996
63    54.27  867.8165
64    54.32  546.7774
65    41.20  504.9391
66    34.58  283.8793
67    50.11  347.0351
68    52.05  377.2332
69    33.82  725.3493
70    39.88  479.8502
71    36.24  446.6893
72    41.02  497.9817
73    46.13  382.7055
74    51.15  740.6097
75    32.28  469.8219
76    33.26  373.2986
77    31.78  362.0195
78    31.28  575.7414
79    50.52  503.4115
80    47.21  674.2223
81    32.69  715.4710
82    38.30  229.4964
83    33.83  222.6388
84    40.30  397.9347
85    40.62  564.3519
86    32.14  583.6990
87    31.66  502.5933
88    26.09  435.8743
89    39.84  597.3510
90    24.83  446.9202
91    28.20  431.3176
92    31.19  602.6493
93    37.57  332.2962
94    27.16  386.9290
95    23.42  444.3156
96    18.57  348.8593
97    30.97  422.1927
98    17.82  374.5757
99    15.57  181.7830
100   15.93  242.0478
101   28.71  252.5336
102   32.22  202.8932

classInt documentation built on May 2, 2019, 6:30 p.m.