topic Re: Creating a polygon for a fixed area in ArcGIS Pro Questions

Creating a polygon for a fixed area

James_OKane — Mon, 25 Oct 2021 03:43:33 GMT

Hi All,

I have a deceptively simple problem. I need to create a polygon with a fixed area and can't figure out any way to do this other than trial and error. Please see the example below. I'm tasked with creating a poly of 15,000 m². The NW line is fixed, NE and SW lines are fixed to the NW line and able to grow and shrink the SE line.

Because the NE and SW lines have different bearings its not a simple math problem. Below is a trial and error. One too small (11,358) and one too big (17,332) so obviously the magic 15,000 is inbetween.

My question is whats the best way to solve this problem? It seems to me that it could be done with software like Pro but a good search hasn't found anything. Any suggestions?

Thanks in advance.

Cheers,
James

Re: Creating a polygon for a fixed area

JayantaPoddar — Mon, 25 Oct 2021 06:27:00 GMT

If you can calculate the dimensions (I used 100x150 ft), you could Specify a direction and distance—ArcGIS Pro | Documentation.

Re: Creating a polygon for a fixed area

Scott_Harris — Mon, 25 Oct 2021 13:33:05 GMT

Create a larger polygon than what you need

Edit tab > Modify > Divide

Method: Equal Area
Choose the NW edge of the polygon to set the direction of the dividing line.
Area:15,000 sqM.
Number of parts: 1

Measure the result:

Does that help?

-Scott

Re: Creating a polygon for a fixed area

James_OKane — Mon, 25 Oct 2021 22:01:20 GMT

Hi Scott,

Perfect solution! Its very rare I have to do set area polys so I guess I forgot that the divide tool has that feature.

Thanks!
James

Re: Creating a polygon for a fixed area

JitkaKominácká — Tue, 08 Aug 2023 09:45:21 GMT

Please, write me, where can I find the methods of deviding? I can´t see it (pls see picture). Thanks

Re: Creating a polygon for a fixed area

Scott_Harris — Tue, 08 Aug 2023 12:24:38 GMT

@JitkaKominácká

The screenshot you provided is the Split tool. The Divide tool is a different tool found here:

-Scott

Re: Creating a polygon for a fixed area

JitkaKominácká — Tue, 08 Aug 2023 13:30:54 GMT

Many thanks for this reply! 👌