User Comments on Using Data Tool to Compute Area (2)
Area under Curve
Author: Mark Kramer
Posted: February 27, 2017 at 2:34PM
I would like to know which method the data tool application uses to determine/calculate the area under the curve?
Re: Area under Curve
Author: Francisco Esquembre
Posted: Feb 28, 2017 at 4:41PM
> On Feb 27, 2017, Mark Kramer posted:
> I would like
> to know which method the data tool application uses
> to determine/calculate the area under the curve?
Data used by DataTool is basically a polygonal curve made of a collection of points ([i],y[i]). Hence, the area is computed basically by adding up the area of each vertical polygon between x[i] and x[i+1].
If your question was related to whether DataTool used any integration algorithm (such as Simpson's rule)... no, it just uses a polygonal approximation.