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R: Recipes for Analysis, Visualization and Machine Learning by Chiu Yu-Wei, Atmajitsinh Gohil, Shanthi Viswanathan, Viswa Viswanathan

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A guide to contour maps

Contour maps have also been referred to as isometric maps or isopleth maps. Contour maps are used to display data related to temperature or topographic information. Most of the time, contour maps are used to display maps related to geology or mountains. The contour lines represent which sections of the mountains are steeper based on how close the contour lines are drawn from each other.

A guide to contour maps

How to do it…

We can generate a contour map in R using the contour() function and also add a color to the contour using the filled.contour() function:

contour(volcano, main = "Topographic map of a Volcano",col = "blue") filled.contour(volcano, ...

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