Non Spatial data representation geographical skills

HideShow resource information
View mindmap
  • Non-spatial Data
    • Bar Chart
      • used for most types of data but especially discrete or time series e.g. rainfall, pedestrian count
      • can be horizontal or vertical
      • easy, simple, quick and visually impressionable
      • limitations
        • should only be used with interval data
        • width of the bar can be misleading
        • can be difficult to read accurately
        • can be time consuming when done by hand
        • require additional information to be useful
    • Pie Chart
      • used with percentage data to show the constituent part of a whole e.g. employment
      • always start at 12 o'clock with the smallest first
      • very visual, easy to compare
      • has to use % data, too many sectors can be confusing to the eye,
        • need to standardise order of segments
        • difficult to label to allow all sectors to be readable
        • cant use for exact comparisons
        • may not be accurate especially if done by hand
    • Divided Bar Chart
      • used to show constituents of a whole e.g. employment
      • limitations
        • too many sectors can be confusing
        • difficult to use colours
        • not always easy to compare
    • Rose or Star
      • used to show directions, e.g. wind directions.
      • length of the bar reflects frequency and width
      • limitiations
        • time consuming to draw and read
    • Proportional circle, square or triangle
      • area of the symbol is proportional to square root of data value
      • can cope with large numbers of  such as town population
      • squares are easier to draw than circles
      • limitations
        • time consuming and hard to draw
        • not easy to compare to accurately
        • scale can be complex to draw
        • over lap can occur making it hard to read/interpret
    • Proportional sphere, cube or pyramid
      • area of symbol proportional to cube root of the data value.
      • copes with very large amounts of numbers such as large towns
      • gives good visual impression
  • not easy to compare accurately
    • limitiations
      • time consuming to draw and read


No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Geographical skills and fieldwork resources »