| T O P I C R E V I E W |
| Tallie |
Posted - 06/27/2006 : 10:25:08 AM
Origin Version 6.1
Operating System: Windows NT
I have a problem when differentiating a Spline Fit.
I get the data from the Spline Fit through Interpolate/Extrapolate (200 points). Afterwards I plot the data (it looks just fine) and run a differentiation (Analysis-Calculus-Differentiate). The curve I get is composed of many plateaus, but I need a smooth curve. When looking at the data of the differentiation, I have the same y-values for different x-values. How can I get a smooth curve?
As I am just a beginner with Origin, please try to explain it in simple terms :)
Thanks!
Tallie |
| 1 L A T E S T R E P L I E S (Newest First) |
| easwar |
Posted - 06/28/2006 : 09:11:04 AM
Hi Tallie,
Perhaps the plateaus in the differentiated output correspond to straight line segments (parts of the extrapolated curve that fall on a straight line) and so differentiation is yielding a constant value for those segments?
You can send your Origin Project (OPJ) file to tech support so they can take a look...
Easwar
OriginLab
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