טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentDmitry Tsviyak
SubjectCartographic Representation of the Statistical Census Data
in GIS Environment
DepartmentDepartment of Civil and Environmental Engineering
Supervisors Dr. Ron Adler
Professor Emeritus Doytsher Yerach


Abstract

The main purpose of the research was to implement the methods of statistical mapping on the demographic data collected by the Central Bureau of Statistics of Israel in the field of population density mapping. The more detailed goals were to estimate the advantages and the disadvantages of the existing methods, to develop the best parameters schemes for the implementation of these methods and to propose new ones. The research was conducted on two districts with different population distribution patterns.

The methods examined in this research were:

  • Choropleth, Dasymetric and Isarithmic mapping

  • Mapping using point symbols

  • Two and three dimensional surfaces

The main conclusion of our research is that there is no unique method which fits every map and every population distribution. The method selection depends on two main factors: on the purpose of the map (overview or accurate value representation) and on the population distribution pattern. Each method has its own advantages and disadvantages and must be used carefully in accordance to them. 

Following this, we propose combined maps which will exploit the advantages of different methods instead of the attempts to find the perfect method. For example, a combined map consisting of 2D raster (overview) and a dasymetric map was produced, allowing us to easily identify areas of interest on an overview map and to examine them in detail on the dasymetric map. We believe that the power is in combining the advantages of the methods and not in attempts to overcome disadvantages of individual methods.