724 reputation
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bio website bsl-support.de
location Germany
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visits member for 2 years, 9 months
seen 19 hours ago

I am a management consultant with a background in OR and a strong focus on modeling management problems following Forrester's System Dynamics methodology. After years of abstinence from any programming in a spreadsheet dominated industry I discovered Mathematica a couple of years ago and the fascination has not stopped since then.

It seems THE tool - and no, it is not simply a hammer - for the kind of work that needs to be done in my field and I am often suprised anew how far the possibilities go.


Dec
12
comment AbsoluteOptions prints error messages in V10
It is not really fixed, try Plot[ Sin[x], {x,0,4}, PlotTheme -> "Scientific"]//AbsoluteOptions and see here
Dec
12
revised Timing mathematica code
added 27 characters in body
Dec
12
answered Timing mathematica code
Dec
12
comment BarLegend using Function that uses Blend
Interesting, both answers have good points but there seems to be indeed a bug as BarLegend[{colorf, {0, 30}},n] will give false answers for small n as shown in @Karsten 7's answer. BTW why is the Round[#, 0.001] needed?
Dec
11
comment BarLegend using Function that uses Blend
colorf = Blend[{Red, Blue}, #] &; BarLegend[{colorf, {0, 30}}] works fine in V. 10.0.2. -- maybe it is the definition of colorf and using colof[#] &?
Dec
11
awarded  Excavator
Dec
11
revised Is there a way to get AbsoluteTime to correctly report absolute time differences?
Reivision of the update due to new release
Dec
11
suggested approved edit on Is there a way to get AbsoluteTime to correctly report absolute time differences?
Dec
11
awarded  Autobiographer
Dec
11
comment How to apply Map to level 2 elements in a list
Sometimes it simply is learning by doing - especially when there is an interpreter. :)
Dec
10
comment Parametric Plotting
Could you enter your problem using some formatting so it can be copied for testing?
Dec
10
comment Error entering equation in NDSolve
Good idea but it should be y[t] = -x[t] + sin[t] as otherwise the condition y'[0] == -2 is not met.
Dec
10
answered Error entering equation in NDSolve
Dec
10
revised Why are TimeSeries objects reported with head “TemporalData”?
added a subtext to indicate the deeper meaning of the issue
Dec
10
revised Why are TimeSeries objects reported with head “TemporalData”?
spelling
Dec
10
answered Why are TimeSeries objects reported with head “TemporalData”?
Dec
9
comment Why are TimeSeries objects reported with head “TemporalData”?
I have always admired the scalability coming from the generality in Mma's deisng. I would propose two solutions: Either TimeSeries is better documented as a pure constructor function and there is no such result as TimeSeries[__] (yes, then something like TimeSeriesQ would make sense) or it is supported as an object of its own so that Head@ts returns TimeSeries and is made internally compatible with TemporalData-related functionality.
Dec
8
revised Why are TimeSeries objects reported with head “TemporalData”?
As Andy Ross has correctly pointed out EventSeries is in fact also not reported by the function Head.
Dec
8
comment Why are TimeSeries objects reported with head “TemporalData”?
Since TimeSeries does "construct" a TemporalData object there is of course not difficulty here. But if - as I have written - TimeSeries is merely a constructor function then it should not report the generation of a TimeSeries object (as it certainly does). I am no computer scientist but I cannot help to find this simply inconsistent.
Dec
8
revised Why are TimeSeries objects reported with head “TemporalData”?
As Andy Ross has correctly pointed out EventSeries is in fact also not reported by the function Head.