3,609 reputation
1239
bio website astro.uni-koeln.de/staff/…
location Cologne, Germany
age 45
visits member for 2 years, 11 months
seen 14 hours ago

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


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?
Sep
23
comment Incompatible InterpolatingFunction between V9 (and earlier) and V10
@Mr.Wizard Look's like it's fixed now in V10.0.1.
Aug
19
comment Incompatible InterpolatingFunction between V9 (and earlier) and V10
Works like a charm. Thanks!
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 :)
Jul
25
comment How to use an output of a Solve function in further calculations?
Does res=x/.y[<insert arguments>] work?
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.
Mar
26
comment Forcing Mathematica to typeset parentheses
this is cool. Thanks! Is there a way to control the height of the parentheses? The fraction apears to be somewhat higher.
Mar
26
comment Plotting error table in 3D
@Phab just replace data by Log@data (or Log10@data).
Mar
25
comment Forcing Mathematica to typeset parentheses
Thanks Alexei. This is not exactly what I wanted. The overbar is for the whole fraction X/Y, not only the numerator, so it should span the parentheses.
Mar
25
comment Forcing Mathematica to typeset parentheses
Thanks for the reply. This sounds like a lot of fiddeling. I still hope there is a more generic way :)
Feb
5
comment Green's Function in Mathematica
There is also a new package available in the library, dedicated to Greens fuction computations in Mathematica: library.wolfram.com/infocenter/MathSource/8825
Jan
7
comment How would I get the best quality plot into a TeX editor which includes the legends?
@Nasser Does this work both ways, i.e. will a magnification greater than 100% also result in bad png quality?
Nov
20
comment Savitzky-Golay Filter to smooth noisy data
Great!. Thanks for sharing the filter. The last Definition of SGSmooth has a ; too much preventing any output.
Nov
13
comment How do you plot level curves describing a 3d surface on the x-y plane?
Isn't there a small coordinate mismatch between the ContourPlot and the 3D box?
Sep
27
comment Lost and found Tooltip in ListPlots
@rm-rf Yes, it is always the same plot function just with different data. Weird stuff.
Sep
27
comment Lost and found Tooltip in ListPlots
Yes ListLinePlot works (9.0.1). The strange thing is that I have many instances of ListPlots where the Tooltip does NOT vanish.
Sep
20
comment Applying TextRecognize on alpha-numerical table
Now that's cool. Thanks for figuring that out.
Jun
24
comment Why does automatic scaling behave as it does in Plot?
Mathematica is trying to identify a region of interest. Here, compared to your PlotRange the Peak is too narrow and Plot decides to truncate the y-PlotRange. Try Plot[Exp[-2 (x^2)], {x, -3, 3}] instead.
Jun
21
comment Solution of Non-Linear Equations using Simulation
Is this a Mathematica question or is it more about mathematics? What have you tried so far? You should at least demonstrate that you already put some effort into solving the Problem. It helps to give some working code snippets, others can built upon.
Jun
19
comment Write a function using pattern test to test whether the input is polynomial and print error message if not
@rcollyer Good Point. Changed the answer accordingly.