Exact specified acreage area of a polygon.

Question

Hi everyone, I'm in ArcMap 10.3 and trying to make a polygon have a specified acreage area. Currently it is 181.3061 acres and I would like it to be exactly 180. Is there a way to do this (and I don't mean just by reducing the number of decimal places!)? If so, can I specify which vertex I'd like to the software to use to cause the area to grow or shrink?

Thanks!

DanPatterson_Retired · Answer

it would be easier to code an incremental buffer until you get the right area... but it will probably be trial and error.

you could give this a shot as well http://www.arcgis.com/home/item.html?id=10b2645c4fcd4daf97100720d417424c from arcscripts 2.0 (beta)

PhilCornish · Answer

Thanks to both of you. Darren, you had it right. It is a weirdly shaped polygon and I wanted to pick a vertex to specify where the adjustment could be made to affect the exact area. I had seen the coding info for something like that but it scared me off. Knowing there is no easier tool for this helps. Thanks!

DarrenWiens2 · Answer

If I understand correctly, you have an irregularly shaped polygon (i.e. not necessarily a rectangle or circle) and want to constrain it to an exact size. The short answer is: no, there is no such tool to do this, that I know about.

However, you may be able to script it, although it would be somewhat complicated. Given the vertex and a bearing to move it on, you could automate moving a single vertex and testing the resulting area, through trial and error (although, even then, you may not be able to do exactly what you want - think of an S-shaped polygon).