Often cartographers look for creative ways to get across their message with the data they have to plot. Sometimes data cannot simply be shown with just a series of points, but rather by surmising an entire area as a whole. Isopleths—lines of equal measurement of some form—allow for this to be possible. By drawing a line around a certain area and shading it a specific color or pattern, the generalization of the data in an area is understandable and comparable to other areas of the same design. This map here is an example of isopleths being used to map out genes and their spread across human populations. The “Jatt Gene”, a gene specific to the Rajput peoples of Indian history, has been distributed throughout these areas, most notably the center of Inda where the Rajput peoples originated.
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