An inventory of existing land use maps developed by Oregon county planning departments has been made through use of questionnaires and interviews. The degree of consistency has been examined with regard to the types of base maps, scales, projections, base information, and classification schemes employed. Recommendations have been made for...
The Corvallis area study is made to help evaluate the local need
for additional system capacity ten years in the future. The product of
the study is an areally detailed projection of electrical demand.
The demand is derived in two steps: the location, nature, and
intensity of specific land uses...
Moire patterns have been identified by printers as
undesirable screen patterns caused by incorrect angling of
overprinted halftones. These patterns are being examined by
cartographers as a possible alternative to traditional methods
of producing patterned areas on maps. Map design guidelines
are needed before the use of moires can become...
In 1979, the Geographic Applications Laboratory
of the Department of Geography, Oregon State University,
was retained by the Portland General Electric Company to
form and supervise a program to monitor the bioenvironment
in the vicinity of the Boardman Coal-Fired Power plant. This
partially fulfills requirements of the Department of Energy...
Attempts to map the distribution of acidic
deposition have been inadequate, particularly in areas of
seasonal or limited rainfall. Ambient air concentrations
of acid precursors may be used to monitor and map the
distribution of potential acidic deposition. A network of
stations in California currently monitor these ambient air
concentrations....
Progress in the development of color CRT's and color
graphic hard-copy devices offers a new tool for the thematic mapper.
From a cartographic perspective, the technology for displaying and
producing color maps has advanced without concern for cartographic
principles and conventions in the employment of color. Since it is
necessary...
A method for delineating watersheds by computer using digital
elevation model (OEM) data is presented. The five steps in this
process are detailed and examples are shown. The algorithm was tested
using a manually created OEM for a small area in Northern
California. Three basins were delineated using the delineation...
In this paper "map complexity" refers to the inherent
intricacy of a mapped geographic pattern. Map complexity and sample
size are two variables shown to influence the accuracy of
interpolated dasymetric maps.
An automated experiment was designed to investigate the
precise relationship among map complexity, sample size, and the
accuracy...
The major considerations for acquiring and using a
geographic information system (G..I.S.) for regional or national
geographical research and analysis are examined in this paper.
After defining what a G.I.S. is, some of the more practical and
useful functions of a G.I.S. in day-to--day geographical work are
outlined. Finally, the...
Cartographic generalization results In locational Inaccuracies of the
generalized feature. The cartographer expresses the amount of generalization
and the locational inaccuracy of the feature through map design and choice of
map scale. This information is often lost when the map is digitized. In the environment
of geographic Information systems, the...