DIY3: Data for origins (DIY store customers' places of residence)

Description Usage Format Source References Examples

Description

The 19 origins and the resident population.

Usage

1
data("DIY3")

Format

A data frame with 19 observations on the following 2 variables.

district

a factor with 19 levels representing the origins

population

a numeric vector containing the resident population (2012)

Source

Wieland, T. (2015): “Raeumliches Einkaufsverhalten und Standortpolitik im Einzelhandel unter Beruecksichtigung von Agglomerationseffekten. Theoretische Erklaerungsansaetze, modellanalytische Zugaenge und eine empirisch-oekonometrische Marktgebietsanalyse anhand eines Fallbeispiels aus dem laendlichen Raum Ostwestfalens/Suedniedersachsens”. Geographische Handelsforschung, 23. 289 pages. Mannheim : MetaGIS.

References

Wieland, T. (2015): “Raeumliches Einkaufsverhalten und Standortpolitik im Einzelhandel unter Beruecksichtigung von Agglomerationseffekten. Theoretische Erklaerungsansaetze, modellanalytische Zugaenge und eine empirisch-oekonometrische Marktgebietsanalyse anhand eines Fallbeispiels aus dem laendlichen Raum Ostwestfalens/Suedniedersachsens”. Geographische Handelsforschung, 23. 289 pages. Mannheim : MetaGIS.

Examples

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data(DIY1)
data(DIY2)
data(DIY3)
# Loading the three DIY store datasets

DIY_alldata <- merge (DIY1, DIY2, by.x = "j_destination", by.y = "j_destination")
# Add store data to distance matrix

huff_DIY <- huff.shares (DIY_alldata, "i_origin", "j_destination", "A_j_salesarea_sqm", 
"t_ij_min", gamma = 1, lambda = -2)
# Calculating Huff local market shares
# Gamma = 1, Lambda = -2

huff_DIY <- merge (huff_DIY, DIY3, by.x = "i_origin", by.y = "district")
# Add data for origins

huff_DIY_total <- shares.total (huff_DIY, "i_origin", "j_destination", "p_ij", 
"population")
# Calculating total market areas (=sums of customers)

colnames(DIY3) <- c("district", "pop")
# Change column name to "pop" (must be other name)

huff.lambda (huff_DIY, "i_origin", "j_destination", "A_j_salesarea_sqm", 
"t_ij_min", gamma = 1, atype = "pow", gamma2 = NULL,
lambda_startv = -1, lambda_endv = -2.5, dtype= "pow",
DIY3, "district", "pop", huff_DIY_total, "suppliers_single", "sum_E_j", 
method = "bisection", iterations = 10)
# Iterative search for the best lambda value using bisection
# Output: gamma and lambda

huff.lambda (huff_DIY, "i_origin", "j_destination", "A_j_salesarea_sqm", 
"t_ij_min", gamma = 1, atype = "pow", gamma2 = NULL,
lambda_startv = -1, lambda_endv = -2.5, dtype= "pow",
DIY3, "district", "pop", huff_DIY_total, "suppliers_single", "sum_E_j", 
method = "bisection", iterations = 10, output = "iterations", show_proc = TRUE)
# Same procedure, output: single iterations  

huff.lambda (huff_DIY, "i_origin", "j_destination", "A_j_salesarea_sqm", 
"t_ij_min", gamma = 1, atype = "pow", gamma2 = NULL,
lambda_startv = -1, lambda_endv = -2.5, dtype= "pow",
DIY3, "district", "pop", huff_DIY_total, "suppliers_single", "sum_E_j", 
method = "compare", iterations = 10, output = "iterations", show_proc = TRUE, plotVal = TRUE)
# Using compare method, output: single iterations and plot 

Example output

$gamma
[1] 1

$lambda
[1] -2.000488

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   Iteration    Lambda
1          1 -1.750000
2          2 -2.125000
3          3 -1.937500
4          4 -2.031250
5          5 -1.984375
6          6 -2.007812
7          7 -1.996094
8          8 -2.001953
9          9 -1.999023
10        10 -2.000488
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    Iteration Lambda
1           1  -1.00
2           2  -1.01
3           3  -1.02
4           4  -1.03
5           5  -1.04
6           6  -1.05
7           7  -1.06
8           8  -1.07
9           9  -1.08
10         10  -1.09
11         11  -1.10
12         12  -1.11
13         13  -1.12
14         14  -1.13
15         15  -1.14
16         16  -1.15
17         17  -1.16
18         18  -1.17
19         19  -1.18
20         20  -1.19
21         21  -1.20
22         22  -1.21
23         23  -1.22
24         24  -1.23
25         25  -1.24
26         26  -1.25
27         27  -1.26
28         28  -1.27
29         29  -1.28
30         30  -1.29
31         31  -1.30
32         32  -1.31
33         33  -1.32
34         34  -1.33
35         35  -1.34
36         36  -1.35
37         37  -1.36
38         38  -1.37
39         39  -1.38
40         40  -1.39
41         41  -1.40
42         42  -1.41
43         43  -1.42
44         44  -1.43
45         45  -1.44
46         46  -1.45
47         47  -1.46
48         48  -1.47
49         49  -1.48
50         50  -1.49
51         51  -1.50
52         52  -1.51
53         53  -1.52
54         54  -1.53
55         55  -1.54
56         56  -1.55
57         57  -1.56
58         58  -1.57
59         59  -1.58
60         60  -1.59
61         61  -1.60
62         62  -1.61
63         63  -1.62
64         64  -1.63
65         65  -1.64
66         66  -1.65
67         67  -1.66
68         68  -1.67
69         69  -1.68
70         70  -1.69
71         71  -1.70
72         72  -1.71
73         73  -1.72
74         74  -1.73
75         75  -1.74
76         76  -1.75
77         77  -1.76
78         78  -1.77
79         79  -1.78
80         80  -1.79
81         81  -1.80
82         82  -1.81
83         83  -1.82
84         84  -1.83
85         85  -1.84
86         86  -1.85
87         87  -1.86
88         88  -1.87
89         89  -1.88
90         90  -1.89
91         91  -1.90
92         92  -1.91
93         93  -1.92
94         94  -1.93
95         95  -1.94
96         96  -1.95
97         97  -1.96
98         98  -1.97
99         99  -1.98
100       100  -1.99
101       101  -2.00
102       102  -2.01
103       103  -2.02
104       104  -2.03
105       105  -2.04
106       106  -2.05
107       107  -2.06
108       108  -2.07
109       109  -2.08
110       110  -2.09
111       111  -2.10
112       112  -2.11
113       113  -2.12
114       114  -2.13
115       115  -2.14
116       116  -2.15
117       117  -2.16
118       118  -2.17
119       119  -2.18
120       120  -2.19
121       121  -2.20
122       122  -2.21
123       123  -2.22
124       124  -2.23
125       125  -2.24
126       126  -2.25
127       127  -2.26
128       128  -2.27
129       129  -2.28
130       130  -2.29
131       131  -2.30
132       132  -2.31
133       133  -2.32
134       134  -2.33
135       135  -2.34
136       136  -2.35
137       137  -2.36
138       138  -2.37
139       139  -2.38
140       140  -2.39
141       141  -2.40
142       142  -2.41
143       143  -2.42
144       144  -2.43
145       145  -2.44
146       146  -2.45
147       147  -2.46
148       148  -2.47
149       149  -2.48
150       150  -2.49
151       151  -2.50

MCI documentation built on May 2, 2019, 6:02 a.m.