3,609 reputation
1239
bio website astro.uni-koeln.de/staff/…
location Cologne, Germany
age 45
visits member for 2 years, 11 months
seen 9 hours ago

Astronomer, interested in star formation, interstellar medium, astrochemistry, doing numerical modelling


9h
revised Astronomy: Transform coordinates from horizon to equatorial
added 186 characters in body
9h
answered Astronomy: Transform coordinates from horizon to equatorial
Nov
18
awarded  Nice Answer
Oct
29
revised PenaltyFunction Option in NMinimize
added 504 characters in body
Oct
29
comment PenaltyFunction Option in NMinimize
@belisarius This suggest that "PenaltyFunction" takes two(+) arguments: the constraint(s) and the iteration Counter. Right? But why? Any PenaltyFunction could be substituted by a modified constraint. Of course the Iteration dependence could be used to soften/harden the constraints during the minimization. Why would I do this?
Oct
29
asked PenaltyFunction Option in NMinimize
Oct
22
awarded  Popular Question
Oct
8
awarded  Custodian
Oct
8
reviewed Approve Eliminating the Parameter: Transform parametric equation to Cartesian equation and draw arrows along parametric growth
Sep
23
comment Incompatible InterpolatingFunction between V9 (and earlier) and V10
@Mr.Wizard Look's like it's fixed now in V10.0.1.
Sep
18
revised Incompatible Changes since Mathematica Version 7?
added V8 to V9+ Interpolation issue on unstructured grids
Sep
17
asked Interpolation on an unstructured (mostly-structured) grid in 4D+
Aug
19
awarded  Nice Question
Aug
19
comment Incompatible InterpolatingFunction between V9 (and earlier) and V10
Works like a charm. Thanks!
Aug
19
accepted Incompatible InterpolatingFunction between V9 (and earlier) and V10
Aug
18
comment Incompatible InterpolatingFunction between V9 (and earlier) and V10
@m_Goldberg I agree, the new output format is nice. However, I also like my old InterpolatingFunctions and i would like to Keep using them :)
Aug
18
asked Incompatible InterpolatingFunction between V9 (and earlier) and V10
Jul
25
comment How to use an output of a Solve function in further calculations?
Does res=x/.y[<insert arguments>] work?
Jul
2
awarded  Curious
May
23
comment ToExpression and Fortran notation
ImportString takes a String as argument and provides the same output as Import, which takes a file as Argument.