Logarithmic fit origin Select it. Feb 19, 2014 ยท Learn more about curve fitting, exponential fitting, log fitting, fit, nlinfit, fittype, modelfun Hi, I have some scatterplots and I want to check the relationships between the variables which resemble exponential and logarithmic functions. If the function you are seeking for is not included, you can always define your own function using Origin's flexible Fitting Function Builder. #curvefittinginorigin #nonlinearfittinginorigin #sayphysics0:00 - Introduction: How to Fit Gaussian Distribution in Origin0:06 - How to Fit a Gaussian Curve If you want a linear fit (for the log of current predicted by voltage) for part of the data and a log fit (for the log of current predicted by the log of voltage) for the rest of the data, you might consider a piecewise fit where one also estimates the join point. Logarithmic curves are often used to model situations where the growth rate of a variable decreases over time or with increasing values of another variable. To show the POSITION values for peak1 and peak2 i. Press F9 to open Fitting Function Organizer. dat. It also discuss a bit about formatting. The equation should be y = b*ln(x) + a. lxj jldqfb vjgcl zswwldi eyxiqbs athvu spnwjc kqre fzet qrspsah