
Re: PI AF Analysis  interpolate between equations
Dan Fishman Aug 10, 2018 1:54 PM (in response to simonsmith0912)1 of 1 people found this helpfulTake a look at this post: How to use AF table lookup in AF Expression Analysis? Tablelookups support interpolation!

Re: PI AF Analysis  interpolate between equations
Roger Palmen Aug 10, 2018 4:59 PM (in response to simonsmith0912)It really depends on the equations. Not a math expert here, but if i recall my highschool days, if they are of the same magnitude, you should be able to refactor that into a single formula.

Re: PI AF Analysis  interpolate between equations
bbregenzer Aug 24, 2018 12:55 AM (in response to simonsmith0912)2 of 2 people found this helpfulHI, Simon.
If you can translate each set of curves into a three column table (Temperature, Pressure, <whatever your third variable is>), then I think you could apply the new bilinear interpolation feature in AF. Otherwise, I think you'll have to use a series of analyses to calculate the result for the given pressure at the two closest temperature curves and then do the linear interpolation with another equation. Please let us know what you think.

Re: PI AF Analysis  interpolate between equations
sraposo Aug 24, 2018 1:40 PM (in response to simonsmith0912)Hi Simon,
I agree with Brent, I think using bilinear interpolation is the approach for this. This is a new feature of AF 2018. If you have an older version of AF and you can't upgrade, can you share a little more details on what your equation is, and how the table is configured?
Thanks,
Seb