App Name

Polynomial and 4PL Curve Fit/Regression, curve fit scipy, curve fit in excel

Tool Function

curve fit based on polynomial and Four Parameter Logisitics (4PL) model

Tool Principle

polynomial regression model: Y = a * X^n + b * X ^(n-1) + ... + n * X + C
Four Parameter Logisitics (4PL) Dose-Response regression model: refer to intro. 4PL link

Usage Steps

Note:
a- cell input mode is best for mobile input mode, as it will triger digit key board, and you can add or redeuce cell easierly, which is easy and easy to understand
b- test area input mode might be used when you in PC or you want to copy and paste the original data direct, in case the original digit has been seperated by , or blank, it will be more efficient
special tip: in box-input mode, it allows you to input multi value for each set of data, the calcuator will average the value before calculate, eg: if the x axis set is 1,2 \n 3,4 \n 7,6 \n then the final obtained s axis value is 1.5 \n 3.5\n 6.5

2-once calculate button is clicked, all result will be displaied under calculation result
3-click SAVE icon if you want to review afterward, click copy icon for each line, the result is in you clipboard
4-click history you can see all saved item. Pls be noticed all data saved are still in you local broswer localstorage, will be availiabel in recent session. but not for permerant storage purpose