What are merits and demerits of isopleth technique?

Merits of Isopleth Technique.

1. This is a very effective method of showing distribution and variation.

2. It is ideally suited for showing climatic elements, gradient and transitional belt.

3. Isotherms, isobars and isohyets are important examples of this method.

4. Isopleths do not follow administrative boundaries and show the elements in their natural form.

Demerits of Isopleth Technique :

1. Isopleths normally show natural elements whereas data are often available according to administrative units.

2. Many isopleths are drawn by interpolation which sometimes lead to inaccuracy in the directions of isopleths and the pattern of distribution shown by those lines is distorted.

3. The isopleths lose their significance, whenever there is abrupt change in density or intensity.

4. When transitional belts are not wide enough, these lines lose their importance.