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- POLI_N.DLL
- Plugin for FindGraph.exe (www.uniphiz.com/findgraph.htm)
- *
- **************************************************************
-
- How to use:
- Place DISTLINE.DLL in the program FindGraph subfolder "Appr".
- Start FundGraph.
- Start The Wizard of approximation.
- On step 2 select 'User defined function'.
- If all right, on step 3 your function will appear in list.
-
- Approximation function:
- V(U) = A0 + A1*U + ... +An*U^N
- Find the line that minimizes the perpendicular distance
- between line and points.
- This is so called 'Deming regression'. It fits a polynomial
- line assuming equal experimental errors in both U and V.
- In contrast, ordinary regression assumes that the U values
- are known precisely and all the experimental error is in V.
- Important, U and V must be in the same units.
-
- Parameters:
- If 1, fixed point (U0, V0) on resulting line.
- N = pow of polynomial approximation in limits from 0 to +4
-
- Example:
- N=1, U0=0, V0=0
- V(U) = A0 + A1*U
-
- Questions:
- Sergey Vasilyev
- serg@uniphiz.com
-