Ergograph

An ergograph is a graph that shows a relation between human activities and a seasonal year. The name was coined by Dr. Arthur Geddes of the University of Edinburgh. It can either be a polar coordinate (circular) or a cartesian coordinate (rectangular) graph, and either a line graph or a bar graph.[1][2][3]

For the muscle-measuring device, see Mosso's ergograph.

In polar form, the months of the year are marked around the circumference, forming 30° sectors. Concentric lines display the value being measured. For example an ergograph could show the proportions of time (in hours per day) devoted to each of certain activities, with a time scale, ranging from 0 to 24 hours per day, along the radius of the circle, as a square root scale.[1][2] This form of an ergograph is an example of a polar line graph or (because the data form "bands" on the graph) a polar strata graph or polar layer graph, the "polar" denoting the system of polar coordinates used on the graph.[3] In cartesian form, the X axis is marked for the months of the year, and the Y axis is marked with the scale(s) of the activity/activities.[1][2]

See also

References
  1. Rameshwar Prasad Misra and A. Ramesh (1989). Fundamentals of cartography (2nd ed.). Concept Publishing Company. p. 438. ISBN 9788170222224.
  2. Francis John Monkhouse (2007). "A Dictionary of Geography, Second Edition". A Dictionary of Geography (2nd ed.). Aldine Transaction. p. 127. ISBN 9780202361314.
  3. Graham T. Richardson (1985). Illustrations. Humana Press. pp. 49–50. ISBN 9780896030701.

Further reading
  • Institute of British Geographers (1950). Transactions and Papers — Institute of British Geographers. G. Philip (16–19): 2, 184. Missing or empty |title= (help)


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