I have employment data which are huge - about 500 data for each category, like agriculture field, fishing field etc. Now I want to categorise this data in to 7 ranges. Suppose 50-100=2, etc. for producing an agriculture map of a country by showing these categories as a legend. I don't want to change my main GIS data. I only want to show this data into small categories in Map. How can I do it?
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