This tutorial by Sooraj S, Senior Geologist, State Unit: Chhattisgarh, Geological Survey of India will enable you to operate ARCGIS for contouring of any data set (specially chemical/geochemical data) and obtain reliable result. Please watch the full tutorial to learn step wise in detail. First the manual method is demonstrated followed by automatic Batch Contouring using a custom toolbar. The link is

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https://github.com/soorajgeo/Geochemi...
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Hope after watching this tutorial you will be able to generate satisfactory contour maps of geochemical data.

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