Create a Polygon from a csv

HamzaMerini — Tue, 26 Sep 2023 13:54:27 GMT

Hello,

I would like to create polygons using a csv file, I know that there is a Geoprocessing tool that allows us to do it ( Coordinate Table to Polygon), but it's using coordinates, is there a way to use distances instead of coordinates ?

For example, let's say that I want to draw a 20m square:

0	0
0	20
20	20
20	0

I could also calculate the coordinates of points at the desired distance, but i'm losing precision when I measure the distance on the map :

0	0
0	0.00018018
0.00018018	0.00018018
0.00018018	0

Thank you

Re: Create a Polygon from a csv

JohannesLindner — Wed, 27 Sep 2023 12:10:28 GMT

Import your csv
- example: a square and a triangle
Calculate Field to add the x and y coordinates of the start point
- example: 400,000 / 5,660,000
XY Table To Point
Points To Line
Feature To Polygon

Be aware that measuring gives very different results based on your map's coordinate system, the data's coordinate system, and the measuring method.

For example, in the images above, I measured the distances using the planar method, while both map and feature class are in the same projected coordinate system.

Here is that measurement using the geodesic method:

And here is the planar measurement while the map is in the WGS1984 system (geographic):

topic Create a Polygon from a csv in ArcGIS Pro Questions

Create a Polygon from a csv

Re: Create a Polygon from a csv