o Operator station consists of a keyboard and CRT. This is the
communication device on which the operator can command func
tions needed to be performed by the viewer, micro and host com
puter.
o Printer output - a teleprinting device which operates at high
speed. It provides hard copy verification of the accuracy of
stereo model setup and is useful to document operations. This
teleprinting device is also an input station into the analyti
cal system. This input can be made at the same time the
stereoviewer measurements are being made by another operator.
o Software - the analytical plotter's strengths can be evaluated
by the array of application programs that are available. These
programs provide the versatility of data transfer and applica
tion to any other system.
o Plotting table - the analytical stereoplotter is able to inter
face with any "smart" drafting table. Table choices in many
cases should be at the client's discretion. This table is not
necessary if the analytical plotter is to directly input into a
mapping system, but it may be useful.
The analytical stereoplotter can do any photogrammetric task more effec
tively than other types of stereoplotters.
Since the analytical plotter communicates by using the host computer,
it can be made to "front end" into any computer assisted mapping
system, including the possible use of the mapping system's "host" com
puter. Host computers can be made to communicate easily with each
other. This makes the analytical plotter the perfect data gatherer to
directly input into other systems.
COMPUTER ASSISTED SYSTEMS
Computer Assisted Cartography (CAC) and Geobased Information Systems
(GIS) are treated together. The GIS being the data base of infor
mations and the computer assisted cartography being the graphic output
vehicle.
These systems contain informations that are useful for various land use
planning, resource allocation, and evaluation processes. Land use
planners, environmental analysts, and broad area analysts need infor
mation about the land, its resources, cultural developments, etc., in
order to examine various development activities and to evaluate those
activities' impact on the land and the people living in those environs.
Planners need the ability to "crunch" data, overlay various data bases,
generate statistical data, and to display this data in map form for use
in the evaluation process and for public hearings, etc.
These GIS's deal with MACRO geography. Data is of a general nature and
is suitable to develop long-range strategies and large area statistics.
Data acquired for these systems are usually from small-scale maps from
different origins and of different accuracy levels. Landsat scenes
often provide valuable input and are relatively easy to computer
manipulate; small-scale aerial photography also provides some data.
None of these data are usually accurate enough to be used to implement
action plans "on the ground" after overall decisions have been made on
a piece of real estate.
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