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I'd like to build a graphic showing where city employees live, based on their date of hire. I have a list showing the hire date and the ZIP code for each employee. There are about 4,000 employees.

I can't figure out how to do that, despite it being very easy to explain!

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How do you intend to display zip codes that have multiple employees from multiple years? It will be easier to either 1) show individual employees as points, with icons/colors by year or 2) number of employees per zip code, but not combine the two methods. – RyanDalton Nov 28 '12 at 23:30
That's what I was asking for help on - I can't figure out how to combine the two data points. – TrevorHughes Nov 28 '12 at 23:39
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When you say "build a graphic" do you mean something like "draw something in Photoshop" or "make a map using ArcGIS" or what? – Spacedman Nov 29 '12 at 8:07
I work for a news organization, so I'd need to be able to build a factually accurate map which could then be rendered by an artist into something suitable for publication. – TrevorHughes Nov 29 '12 at 16:10

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