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limitations [2013/03/01 08:28] daniellimitations [2018/01/05 10:48] (current) daniel
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 At the moment, //potfit// takes its tabulated potential functions through values at sampling points and spline interpolation in between. While this allows considerable flexibility, it also has some disadvantages. Especially for distance ranges with rapid changes in function values, the spline polynomials might produce overswings. Users need to keep an eye on the interpolated functions to check if they suffer from potential artefacts. At the moment, //potfit// takes its tabulated potential functions through values at sampling points and spline interpolation in between. While this allows considerable flexibility, it also has some disadvantages. Especially for distance ranges with rapid changes in function values, the spline polynomials might produce overswings. Users need to keep an eye on the interpolated functions to check if they suffer from potential artefacts.
  
-For analytic potentials this is not a problem, because the functions are sampled very densely. (This is defined by APOT_STEPS in ''potfit.h'')+For analytic potentials this is not a problem, because the functions are sampled very densely. (This is defined by APOT_STEPS in ''defines.h'')
 <html><!--It is planned to implement different potential specifications, including potentials given by a functional expression, expansions in orthonormal functions or superpositions of elementary building blocks (e.g. Gaussians). These functions might be less prone to oscillations.--></html> <html><!--It is planned to implement different potential specifications, including potentials given by a functional expression, expansions in orthonormal functions or superpositions of elementary building blocks (e.g. Gaussians). These functions might be less prone to oscillations.--></html>
  
limitations.1362122905.txt.gz · Last modified: 2013/03/01 08:28 by daniel