Question

Differentiate between choropleth and isopleth methods.

Answer 1

Instructions:

• Compare based on the way of representing data.
• Compare based on data boundary.
• Compare based on examples.

Solution:

1. Compare based on the way of representing data

   Parameter	Chloropeth Method	Isopeth Method
   Way of representing data.	Data regarding various geographical variables are represented by shades or tints of various colours.	Data regarding various geographical variables are represented by shades or tints of various colours.
   Data boundary	Administrative boundaries define data boundary as value is given to one sub-administrative unit in a region.	Administrative boundaries do not define data boundary as natural gradients and boundaries are taken into account.
   Example	Choropleth method is used to show variables such as the density of population, literacy rate etc.	Frequently drawn isopleths are isotherm, isobar etc.