STEREO PLOTTING: 
INFLUENCING FACTORS 
APPENDIX III 
Factors influencing production rates. 
A. Factors appertaining to the PRODUCT SPECIFICATION 
A 1 Size of project area 
2 Map scale 
3 Sheet size, lay out, no. of separate traces, projection 
4 Map content, symbols, generalization 
5 % completion required 
6 Planimetric accuracy 
7 Amount of annotation required 
8 Contour VI, Spot height/DGM/Profile spacing 
9 Height accuracy 
B. Factors appertaining to the PROCESS SPECIFICATION 
B 1 Type and distribution of ground control (inc. signalization) 
2 Amount of minor control/auxiliary data 
3 Type of aerial photography 
4 Photo scale(s) 
5 Model scale (relative to photo scale) 
6 Manuscript scale (relative to model scale) 
7 Type of stereo plotting equipment 
8 Type of computer hardward and peripherals 
9 Type of computer software 
10 Amount of photo interpretation at stereo plotter 
11 Method of plotting and type of output (graphical) 
12 Method of digital plotting and type of output 
13 Method of DGM data capture 
14 Method of relative orientation 
C/D ENVIRONMENTAL FACTORS 
C. Factors appertaining to the PROJECT AREA 
C 1 Quantitative aspects 
a. topographic (height diffs, steepness/slopes) 
b. density of natural features 
c. density of cultural features 
C 2 Qualitative aspects 
a. terrain roughness 
b. surface characteristics (swamps, deserts, etc.) 
c. vegetation coverage (trees, grass, crops) 
D. Factors appertaining to the EXECUTING ORGANIZATION 
D 1 Skill, motivation and productivity of staff (inc. efficiency of 
management and organization) 
E. DERIVED FACTORS 
E 1 Quality of ground control 
2 Quality of aerial photography 
3 Quality of aerial triangulation 
4 Quality of map sheet preparation 
5 Quality of pre-plotting interpolation 
6 Quality of plotting