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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