Need a smoother curve .......
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Need a smoother curve .......
I'm attaching a prime 3.1 file . In which i tried to interpolate two sets of data to make a smooth curve like Excel plotting . But the curve is not so smooth , like what I'm expecting .
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See please the attach.
But you need not a spine interpolation but a fittings.
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Unfortunately I can't read P3.1 files (just 3.0).
So here is a file using spline interpolation and a few regressions.
Valey is showing a logistic model but with different data compared with the Excel sheet ?
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Werner,
Please find a PDF version of this worksheet in attachment.
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Thanks.
So I see what the problem is:
This second abscissa value has to be either an undefined variable (if you dispense with the units) or a range variable. I had shown how to do it in my first reply - here is the version using units
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When you create the plot you just need to increase the step for the variable argument of function.
![](/skins/images/695EE5AD3E567050FEDD72575855ED93/ptc_skin/images/icon_anonymous_message.png)