Rescaling grey-tone area symbols to compensate for visual under-estimation of data values does not address the problem of graphic stability. Line growth is a common graphic distortion of grey tones that can occur during the photographic, plateetching and printing stages of map reproduction. A simulation model can be used to predict the effects of reproduction noise on various continuous-tone area symbols. Graphs derived from simulation modelling can assist the map author in specifying an efficient, reduced range of grey tones so that visually indeterminate patterns are avoided.
ASJC Scopus subject areas
- Earth-Surface Processes