Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

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Title:: [WP-5 LARGE SHARED DATABASES]

Document type:: Multivolume work

Structure type:: Chapter

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Title:: PIXELS AND CENSELS: PUTTING PEOPLE IN THE PICTURE. Robert W. Marx

Document type:: Multivolume work

Structure type:: Chapter

produced from the TIGER data base would contain some errors of the type described above, they also knew that the training the enumerators would receive and the procedures the enumerators were being asked to follow provided the guidance necessary for them to annotate the maps with any needed corrections. In this way, the maps they would use to conduct the 1990 census would overcome any TIGER data base deficiencies that might otherwise have affected enumeration accuracy. Current Update Process The Census Bureau modified its update plan when many data users expressed strong interest in having maps that displayed the enumerator-noted corrections at the time local officials performed their review of the preliminary 1990 census housing unit and group quarters population counts at the census block level, scheduled for summer 1990. In addition, these data users expressed strong interest in having the correc tions appear on the maps and in the TIGER/Line files when they began to use them in conjunction with the final 1990 census data products. The Census Bureau was able to undertake this unplanned task because it still had the original graphic terminals used to build the TIGER data base after it received the new graphic work stations that would be their eventual replacements. At this juncture, the Census Bureau decided to enter not only the enumerator-noted corrections, but also those map corrections submitted by local officials during the fall of 1989 and the winter/spring of 1990. By updating the TIGER data base for the postcensus phase of the Local Review Program, the Census Bureau can produce maps that more correctly depict the features that the field staff saw as they completed their data collection rounds. These same improvements in map content will benefit all other users of the maps and the TIGER/Line files as well -- market researchers, election redistricters, delivery routing managers, emergency service responders, and so forth. The Future To prepare for the future and the ongoing maintenance of the TIGER data base, the Census Bureau is partici pating in several experimental programs with other Federal agencies and some state governments to evaluate possible methodologies for updating the feature and geographic entity information. The Census Bureau also is looking at these potential cooperative arrange ments as a way to improve the positional accuracy of the coordinate information in the TIGER data base through automated matches with more accurate local data sets. The approach finally selected probably will be some combination of cooperative programs and traditional approaches involving comparisons of paper maps. CONCLUSIONS All the foregoing make better understanding a very real possibility: The TIGER data base; the demographic, economic, and agricultural statistics available from the Census Bureau; the geographically referenced infor mation maintained by state and local governments, academic institutions, and commercial firms; and, the analytical power GIS technology makes available to study the interrelationships of these massive and diverse data sets. For those who wish to learn more about the background leading to development of the TIGER System, the map products prepared to support the 1990 decennial census, and the other “public” products the Census Bureau plans to make available during the next 18 months, a list of references follows the numbered notes. NOTES AND SELECTED REFERENCES 1 Officially, “the United States” consists of the 50 states and the District of Columbia. For each census, the Census Bureau makes extensive data tabulations available for the United States and several statistically equivalent entities (see Notes 2-5 for the details of each recent census); the other areas often are referred to collectively as “Puerto Rico and the Outlying Areas.” All information in Figure 1 refer to the number of entities within these sets of “states.” The TIGER data base includes — on an equal basis — the 1990 census set of states plus: • The Federated States of Micronesia and the Marshall Islands (which together comprise the balance of the former Trust Territory of the Pacific Islands). The Census Bureau included these entities in case it was asked to assist in conducting a census in these areas. • The Midway Islands. The Census Bureau included the Midway Islands to completely cover the area included within the boundaries of the State of Hawaii. Most references to “the United States” in this paper include the entire set of entities discussed above, including the ones in which the 1990 census has not been taken; if the latter entities were included in Figure 1, the counts would be: 60 “states,” 3,286 “counties,” 60,600 E county subdivisions and places (including 30,560 e MCDs, 186 sub-MCDs, and 4,537 E CDPs), 61,600 E census tracts/block numbering areas (having 141,300 e tabulated parts), 229,200 E block groups (having 353,200® tabulated parts), and 7,012,500® blocks. 2 In addition to the 50 states and the District of Colum bia (the United States), the 1980 decennial census includ ed American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the Trust Territory of the Pacific Islands, and the Virgin Islands of the United States. 3 In addition to the 50 states and the District of Columbia (the United States), the 1990 decennial census includes American Samoa, Guam, the Northern Mariana Islands, Palau, Puerto Rico, and the Virgin Islands of the United States. 4 In addition to the 50 states and the District of Columbia (the United States), the 1987 economic censuses included Guam, the Northern Mariana Islands, Puerto Rico, and the Virgin Islands of the United States. 5 In addition to the 50 states (the United States, as there is no agriculture census taken in the District of Columbia), the 1987 Census of Agriculture included Guam, Puerto Rico, and the Virgin Islands of the United States. The Census Bureau is conducting agri culture censuses for American Samoa and the Northern Mariana Islands in conjunction with the 1990 decennial census of those entities. 6 In addition to the county-level entities comprising the included states, the 1987 economic censuses tabu lated data for the seven offshore areas listed below as the statistical equivalents of counties: Alaska California Louisiana Texas Atlantic Northern Gulf of Mexico Pacific 7 The 1987 Census of Agriculture tabulated data for the county-level entities comprising the included states with the following exceptions: 499

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