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I have set of points in one shapefile and I have a table with a unique identifier that matches each point. I want to make a buffer around each point, according to the radius that I have specified in the table. Is this possible? I joined the table to the points, but from what I know, the buffer tool doesn't have such an option?

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Using the buffer tool, you should be able to set the buffer to the values in a field. Selecting the 'field' radio button rather than the 'length' option in the Distance section, you can define the buffer width using table values.

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