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On ArcGIS 10.2, when I create a polygon from a point file, Why does it only draw a line for three sides, and how can I fix that?

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    What were the precise steps that you used to "create a polygon from a point file"? – PolyGeo Nov 14 '16 at 20:54
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    Can you be more specific about the name of the tool you are using to "create a polygon from a point file"? Please take the tour gis.stackexchange.com/tour – jbchurchill Nov 14 '16 at 20:54
  • @jbchurchill So I had a point file, I went to arctoolbox, to data management, features, and then points to line – aarontheheron Nov 14 '16 at 21:51
  • Welcome to GIS SE! As a new user be sure to take the Tour. Please use the edit button beneath your question to revise it with any requested details. It sounds like you asked the software to create a line (not a polygon) from your points, which it did. – PolyGeo Nov 14 '16 at 21:54
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    Points to Line has a Sort Order parameter that defines the order the Points are drawn. If this is omitted, the points might be added as they exist in the Point FC. – klewis Nov 14 '16 at 22:08
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Your question refers to creating a polygon from points, however as you state in your comment you're using the point to line tool. You then need to convert that line to a polygon using the Feature to Polygon tool. If your point file is simple, such as near a square, you can just use the Minimum Bounding Geometry tool to skip the point to line step

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As it shows in the documentation for Points to Line the points input will be connected by a line. It sounds like you're looking for a closed geometry, which will require an additional step of Feature to Geometry according to this answered question ...it does look like you'll need an additional line to close it off though

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