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Create Polygon Feature Class

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04-11-2023 02:03 PM
rhunley3
New Contributor II

I have an Excel file with X/Y (Lat/Lon) coordinates.  I need to recreate a polygon shapefile and/or feature class.  I've looked up some solutions centered around Python and XY Point to Polygon feature.  Does/could anyone point me in the right direction or do I have to physically draw 3,000+ polygons?

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3 Replies
SLouq
by MVP Regular Contributor
MVP Regular Contributor

WHat does the geoprocessing tool Display XY coordinates do?

 

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DanPatterson
MVP Esteemed Contributor

Points To Line (Data Management)—ArcGIS Pro | Documentation

will enable you to create polylines from points, if, the points are associated with a known polygon geometry.  If the polylines are closed-loop then they can be converted to polygons.


... sort of retired...
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ZacharyUhlmann1
Occasional Contributor III

You definitely should not "physically draw [tons of] polygons", but Python will probably be necessary.  You would need a table with the points for all polygons (x,y) as well as some way to identify the start and stop points for each polygon.  For example, if each polygon is a rectangle/square you would have 4 vertices per polygon.  So 3,000 polygons X 4 points/polygon = 12,000 points.  That's your starting point.  Note that every polygon does technically record the start and stop point twice, so you would have 3,000 X 5 points/ polygon = 15,000 points.  

If you can post a portion of your spreadsheet that would be helpful.

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