Thanks for your comment. Unfortunately, Tract Plotter does not currently support curves. It is something that I am currently working on, although it will probably not be available in the free version of Tract Plotter.

In your case, I think you will find that a curve of radius 4400 feet, for a distance of 85.65 feet, is for all practical intents and purposes, a straight line. I suggest that you try inputting the tract in the following manner: Re-arrange all of the deed calls so that the curve is the very last one. This will mean that you move all of the deed calls after the curve, to the beginning. To give an example, let’s say this is the original description:

A
B
Curve
D
E

Now, re-arrange them so they are like this:

D
E
A
B
Curve

Put them into Tract Plotter this way, but simply leave the Curve part out. It will calculate a straight-line closure automatically.

Just out of curiosity, I did a little math on the Circle Calculator here:

http://www.1728.org/circsect.htm

In this case we know the Radius (4400) and the Arc Length “AB” (85.65). Putting this into the circle calculator, we find that the chord length (straight line from A to B instead of along the arc) is 85.649 feet, and the “Segment Height ED” (the maximum distance that the curve bows out from the straight line) is 0.20841 feet. The “Segment Area” (areal difference between the curve and the straight line) is 11.9 square feet, which is 0.00027 acres.

So you see, the curve here is really pretty much negligible, and using a straight-line approximation instead of the curve will not be a problem. I have found this to be the case for most tracts with a highway curve where the radius is in the thousands of feet.

I have “…said curve on the left whose central angle and radius are respectively 20d 18m 08s and 4,400 feet for a ditance 85.65 feet…”

How do I input that?

This is property that abbuts a highway with a long sweeping curve to the right. The tract is on the left of the highway.

Thank you.

One of the features of Tract Plotter is the ability to save your tracts by simply bookmarking them in your browser. The URLs are designed in such a way as to make this easy and painless — you can bookmark as many plots as you want, and you can return to view any of them at any time. You can also copy the URL from the browser’s address bar, and paste it into an e-mail. The iPhone has a built-in feature called “Mail Link to this Page” which does the same thing automatically. I bet there is a similar feature in Android.