Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I have a text file containing the projected coordinates of the points that define a single polygon. The X, Y coordinates are separated by Tab

Is there a tool in ArcGIS similar to "Add X,Y Data" in ArcMap, that can be used to automatically create polygons FC, not point FC?

I use ArcGIS 10.1 for Desktop.

share|improve this question
    
Possible duplicate: gis.stackexchange.com/questions/20020/points-to-polygon –  Maksim Aug 26 at 12:30
1  
There is an ArcGIS Idea for this - search on "ungenerate" (the opposite tool is also mentioned). –  PolyGeo Aug 26 at 12:37
1  
If you have an ArcInfo license, then you can use the Minimum Bounding Geometry (Data Management tool to create a convex hull (ref. gis.stackexchange.com/a/39/15768) from your points. –  Erica Aug 26 at 12:42
    
Erica, wouldn't that be a two-step process? 1) Create points FC - 2) Create polygon using the Points FC. I was looking for a single tool that can automatically do that, so should I assume there isn't any? Thank you –  Ligia Aug 26 at 12:53

2 Answers 2

up vote 7 down vote accepted

There isn't any tool to do this in 1 single step, you should either:

  1. convert your text file to points
  2. convert points to lines with Points to Line
  3. convert lines to polygons with Feature to Polygon (Advanced licnese required)

Or:

Use arcpy :) - no specific license required.

See an example at the bottom of the page Writing geometries. The code converts a list of coordinates (a text file can be regarded as such a list) into polylines, you can easily modify it to create polygons.

share|improve this answer
    
thank you for your answer, it's exactly what I needed. –  Ligia Aug 26 at 13:21
    
Glad I could help! –  GISGe Aug 26 at 13:25

On the ArcGIS Idea website, someone suggested this toolbox http://resources.arcgis.com/gallery/file/geoprocessing/details?entryID=F25C5576-1422-2418-A060-04188EBD33A9 that has a tool called "Create features from text File", which can automatically create point, lines and polygons Feature Classes from text files containing coordinates. Worked for me.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.