Noisy function generator

This online calculator takes function, calculates its values for given range and then adds some random noise to distort original values.

This page exists due to the efforts of the following people:



Created: 2018-08-29 10:29:43, Last updated: 2020-11-03 14:19:36
Creative Commons Attribution/Share-Alike License 3.0 (Unported)

This content is licensed under Creative Commons Attribution/Share-Alike License 3.0 (Unported). That means you may freely redistribute or modify this content under the same license conditions and must attribute the original author by placing a hyperlink from your site to this work Also, please do not modify any references to the original work (if any) contained in this content.

Not a long time ago I played with the decomposition of time series. This involved different tasks related to seasonality detection and autocorrelation. When I was implementing ACF (autocorrelation function), I, of course, wondered if I got it right.

Thus I needed test data, and that's why I've created this calculator. The idea was to take some defined function, like sine, distort it with some random noise and use distorted values in ACF calculator (and other related calculators), to see if calculator will be able to detect seasonality (which indeed presents in original function).

So here it goes. You should enter function of one variable, starting and ending values of this variable, number of points to generate and randomness parameter, where zero means no noise. Randomness is generated based on difference between current and previous values of the function.

The chart displays resulted distorted function along with the original function. You also have the option to dump generated values to csv data, so you can copy them and use as test data.

PLANETCALC, Noisy function generator

Noisy function generator

Digits after the decimal point: 2
The file is very large. Browser slowdown may occur during loading and creation.

URL copied to clipboard
PLANETCALC, Noisy function generator