Posted by
Cammer, Michael on
May 19, 2011; 6:11pm
URL: http://imagej.273.s1.nabble.com/Power-Curve-fitting-SLope-and-intercept-different-than-Excel-tp3684501p3684502.html
Years ago, when trying to fit time correlated FLIM data, we found that Excel was really, really wrong. [For single exponential decay, ImageJ was great.]
And even if you dismiss my judgment as really really wrong, certainly Excel's algorithms are different.
-Michael
-----Original Message-----
From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of Sharad Bansal
Sent: Thursday, May 19, 2011 12:49 PM
To:
[hidden email]
Subject: Power Curve fitting SLope and intercept different than Excel
Hi,
We are using the ij Curvefitrter class and using it for fitting curve using linear and power options. While linear fitting gives back the slope and intercept values same as when we add trendline to same set of data in Excel and get equation nfrom excel for slope and intercept, in case of power fitting, the values are different than the ones coming from trendline equation generated in Excel for same set of data.
Is this a known issue in CurveFitter or Excel? I need an answer quickly for this,kindly help.
Thanks,
Sharad
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