Jonas Teuwen

Delft, The Netherlands

fa.its.tudelft.nl/~teuwen

Age: 28

I'm a PhD candidate in analysis (harmonic analysis). I have a Master of Science degree in mathematics (analysis). My email address is jonasteuwen@gmail.com. And my [Google Scholar profile](http://scholar.google.com/citations?user=Jz3tRZMAAAAJ). (I agree, not much there yet. Should change soon!) I would appreciate it if you would correct my spelling and grammatical errors.

@jonasteuwen

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Oct
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comment Coloring random points in an annulus
@kguler: Yes, when I set randomInAnnulus[R1_, R2_, cb_: 0, n_: 100] := Transpose@{# Cos@#2 + cb, # Sin@#2 + cb} &[ Sqrt@RandomReal[{R1, R2}^2, n], RandomReal[2 \[Pi], n]]; and I pick cb so large that x*y > 0 for all points I get an error.
Oct
8
comment Coloring random points in an annulus
It does work well, but if I replace the condition for the check with another one it fails if there are no such points (for instance when I shift the annulus in the first kwadrant. Is there an easy way to resolve this?
Oct
7
accepted Coloring random points in an annulus
Oct
6
comment Coloring random points in an annulus
Is there any advantage (i.e., speed) in using any of those three?
Oct
6
comment Coloring random points in an annulus
Yes, I have noticed it is quite slow. Do you have any ideas how to do it faster?
Oct
6
asked Coloring random points in an annulus
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