This dataset contains the boundary data for the 4 U. S. 2000 or 2010 Census Regions for use by the NCI SeerMapper package.
data(rg99_d00)This dataset contain a single SpatialPolygonsDataFrame type object that contains the boundary polygon definitions for the 5 U. S. Census Regions for the year 2000 or 2010 and an extra region covering Alaska, Hawaii and Puerto Rico. The U. S. Census website defines the continental regions with values of 1 through 4 as NorthEast, South, MidWest and West. The states of Alaska, Hawaii, and the territory of Puerto Rico were assign regional values of 0, effectively a 5th region - offshore. The regional boundary data is the same for both the 2000 and 2010 census. This dataset maintains the codes as published by the U. S. Census Buearu. The regions are keyed using the U. S. 2000 or 2010 Census region codes based on which package being used. The SeerMapper package supports the 2000 and 2010 boundaries. Only one dataset is required: rg99_d00.
The U. S. 2000 and 2010 Census Region codes:
0 - Offshore
1 - NorthEast
2 - South
3 - MidWest
4 - WestThe U. S. States/Terr. in the Offshore region (code = 0) are"
02 - Alaska
15 - Hawaii
72 - Puerto Rico
The U. S. States in the NorthEast region (code = 1) are:
FIPS Name
09 - Connecticut
23 - Maine
25 - Massachusetts
33 - New Hampshire
34 - New Jersey
36 - New York
42 - Pennsylvania
44 - Rhode Island
50 - Vermont
The U. S. States in the South region (code = 2) are:
FIPS Name
01 - Alabama
04 - Arkansas
10 - Delaware
11 - District of Columbia
12 - Florida
13 - Georgia
21 - Kentucky
22 - Louisiana
24 - Maryland
28 - Mississippi
37 - North Carolina
40 - Oklahoma
45 - South Carolina
47 - Tennessee
48 - Texas
51 - Virginia
54 - West Virginia
The U. S. States in the Midwest region (code = 3) are:
17 - Illinois
18 - Indiana
19 - Iowa
20 - Kansas
26 - Michigan
27 - Minnesota
29 - Missouri
31 - Nebraska
38 - North Dakota
39 - Ohio
46 - South Dakota
55 - Wisconsin
The U. S. States in the West region (code = 4) are:
06 - California
08 - Colorado
16 - Idaho
30 - Montana
32 - Nevada
35 - New Mexico
41 - Oregon
49 - Utah
53 - Washington
56 - Wyoming
As of Version 1.0 of the SeerMapper package, The ".rda" datasets are compressed using the "xz" method to reduce the disk space requirements.
The region boundary data was created from the state boundary data used in this package to ensure the borders lined up. The state boundary data was created from county and census tract boundary data processed by "www.MapShaper.org" website version 01.15 using modified Visvalingam method with intersection repair enabled and prevent shape removal enabled and simplified to 13 while maintaining a visually usable boundary image and edge alignments.
The PROJ.4 projection used for these boundaries is:
"+proj=aea +lat_1=33 +lat_2=49 +lat_0=39 +lon_0=96W +ellps=WGS84"
The dataset provide a good functional characterization of the 5 regions.
The @data structure of the saved SpatialPolygonsDataFrame contains the following information for use by the SeerMapper function:
a character vector of the region number (0-4)
a character vector of the region number (0-4). Save as the row.names of the SPDF
a character vector containing the 1 digit U. S. region number from the U. S. 2000 or 2010 census state boundary datasets. (0 to 4) This field is also used as the row.names for the SpatialPolygons.
a character vector containing the region name.
an integer value of the number of census tracts in the region for the census year 2000.
an integer value of the number of census tracts in the region for the census year 2010.
an integer value of the number of counties in the region for the census year 2000.
an integer value of the number of counties in the region for the census year 2010.
an integer value of the number of states in the region for both the census years.
# NOT RUN {
data(rg99_d00)
# }
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