Question
What is an isopleth map? How an interpolation is carried out?
Solution
An imaginary line which joins the places of equal values is referred as isopleth. These include isotherms, isobars, isohytes, isonephs, isohets, contours etc.
Interpolation is carried out in the following method:
1. Firstly determine the minimum and maximum values given on the map.
2. Calculating the range of value.
3. Based on range determine the interval in a whole number like 5, 10, 15, etc.
4. The exact point of drawing an isopleth is determined by using following formula :
