I need a formula that creates Logistic Functions, sometimes known as Sigmoid Functions or S Curves.
http://en.wikipedia.org/wiki/Logistic_function#mediaviewer/File:Logistic-curve.svg
I would like to be able to provide a length of time (measuring in weeks) and the formula would calculate the data values.
If you look at the link to the SVG file, the X axis is from -6 to 6 and the Y axis is from 0 to 1. I would need the X axis to generate from 1-10 (if I chose 10 as the length of time) or 1-30 (if I chose 30 as the length of time). The Y axis would always be from 0% to 100%.
Thanks
http://en.wikipedia.org/wiki/Logistic_function#mediaviewer/File:Logistic-curve.svg
I would like to be able to provide a length of time (measuring in weeks) and the formula would calculate the data values.
If you look at the link to the SVG file, the X axis is from -6 to 6 and the Y axis is from 0 to 1. I would need the X axis to generate from 1-10 (if I chose 10 as the length of time) or 1-30 (if I chose 30 as the length of time). The Y axis would always be from 0% to 100%.
Thanks
