PDF Version of this document Search Help Glossary

Lesson Navigation IconThematic Cartography

Unit Navigation IconIntroduction to thematic cartography

LO Navigation IconDefinition

LO Navigation IconMap vs. cartogram vs. diacartogram

LO Navigation IconStatements of thematic maps

LO Navigation IconData value types

LO Navigation IconQuantitative and qualitative data

LO Navigation IconData structure

LO Navigation IconSummary

LO Navigation IconSelf Assessment

Unit Navigation IconDesign of thematic maps

Unit Navigation IconPreliminary decisions and questions for the creation of a thematic map

Unit Navigation IconTransformation of statistical data into thematic maps

Unit Navigation IconMapping techniques for thematic maps

Unit Navigation IconSelf Assessment

Unit Navigation IconRecommended Reading

Unit Navigation IconGlossary

Unit Navigation IconBibliography

Unit Navigation IconMetadata

GITTA/CartouCHe news:

Go to previous page Go to next page

Data value types

Statistical data, which are ordered in tabular form, can contain different types of numbers, which are to be explained using the categorization by Schröder (1985). These categories are: Frequency number, measure and ratio.

  • Frequency number describes the frequency that a certain event is happening, the incidence of a certain occurrence, such as the number of traffic fatalities per year.
  • Measures in conjunction with a unit specify a dimension such as 28°Celsius or 10,5kg or 1000m.
  • Ratio numbers specify a relation, also called relative values. An example is population density, which is defined as the ratio between the population number and the area. Ratio numbers can be divided into four further types of numbers, depending on the values that are related to it. These are:
    • Proportion numbers
    • Measurement numbers
    • Index numbers
    • Relation numbers

    Here you can find detailed information.
Top Go to previous page Go to next page