SOFTWARE ASPECTS OF ANALYTICAL PLOTTERS 
  
Invited Paper, Comm. II, ISP Congress 1976 
by G. Koneony, 
Techn. University Hannover, F.R.Germany 
Ladies & Gentlemen: 
It must be a big satisfaction for Mr. Helava, that 19 years 
after his invention, the exhibit of the XIII. Internat. Congress 
of Photogrammetry opened his home country with the display of 
at least 7 new devices which can be considered as part of the 
class of Analytical Plotters. Never before has this happened. 
For this very reason it has also been very difficult to present 
to you a preprinted invited paper in a form to include technical 
innovations which have become known to me at the last minute 
with varying degree of completeness. 
The best I could do was to update my views on software problems 
with Analytical Plotters presented to you at the Torino Symposium 
in 1974. This has been distributed as printed paper 
"Der Analytische Plotter und seine anwendungsbezogene Pro- 
grammierung". 
Software depends on hardware to & great extent. Within the next 
20 minutes at my disposal I would like to summarize the hardware 
of now existing systems with respeot to software capability, 
discuss the software tasks and its present possibilities. 
I would like to conclude with a plea for user oriented modular 
programming and task oriented service programs. 
To demonstrate these Mr. Keune and Mr. Rüdenauer will discuss 
afterwards in 5 minutes each two suoh task oriented applications 
in point transfer for aerial triangulation and in D.T.M. data 
acquisition. 
Obviously the reason why there are now so many analytical systems 
built is the drop in computer prices. 
On the average, computers of comparable capacity now cost only 
50 % of what they were costing 4 years ago. Process control 
interfaces, not the servo systems have likewise significantly 
reduced in price, while the optical-mechanical effort has 
remained the same. At a 33 % overall cost reduction the building 
of analytical plotters has become competitive with other types 
of plotters. 
While it was always believed that analytical plotters had their 
special advantages, based on their software they now also become 
attractive from the point of hardware.