571 reputation
212
bio website
location Naples, Italy
age 26
visits member for 1 years, 10 months
seen 2 days ago

Jun
14
accepted Under what conditions does FinancialData return a ::notent message?
Jun
11
awarded  Yearling
Jan
21
comment What's the most “functional” way to do Cholesky decomposition?
I guess it's because my code fails to work whenever a zero has been previously computed on the leading diagonal of the lower triangular matrix. I should have added an exception, but I was probably too lazy to do it at the time. :D I'm just wondering if there are any precision issues involved or if you are actually "supposed to" have a zero in that element, though.
Dec
25
asked Under what conditions does FinancialData return a ::notent message?
Oct
2
accepted Manipulating an arbitrary-precision ContourPlot
Oct
2
accepted Dynamically choosing which Manipulate controls to use
Sep
28
asked Dynamically choosing which Manipulate controls to use
Sep
27
accepted Why is my animation so slow?
Sep
25
comment Why is my animation so slow?
@YvesKlett Not much, actually.
Sep
25
revised Why is my animation so slow?
added 312 characters in body
Sep
25
comment Why is my animation so slow?
The Simplify is actually one my futile attempts at making this thing run faster. I have noticed that the problem is probably in the ParametricPlot3D, as it is present even if I do not combine the two plots, only using the former. This might actually be meaningful.
Sep
25
comment Why is my animation so slow?
I use MMA 8.0.1.0 on an Intel i3 machine running Windows 7, with 4GB DDR3 and a NVIDIA GeForce 310M. I am not sure what kinds of Timings would be useful, since the problem is not that it takes time to start, but rather that the animation looks very much "stop motion"-like. However, I have noticed that it strongly depends on the number of "particles" whose trajectory I track: this slowing becomes negligible at a RandomSample of about 10.
Sep
25
awarded  Constituent
Sep
25
asked Why is my animation so slow?
Sep
11
awarded  Caucus
Aug
13
awarded  Nice Question
Jul
24
comment Manipulating an arbitrary-precision ContourPlot
Yeah, you are right. I hadn't thought about that. Since it is an input value, it is only as good as I can input it, and as it stands I can still use higher precision numbers via the input field under the slider if needed. Thanks! So, basically, there is no way to tell the Manipulate function to feed higher-precision numbers to its arguments "internally". Is this right?
Jul
24
comment Manipulating an arbitrary-precision ContourPlot
Won't SetPrecision get me "virtual" precision?
Jul
24
revised Manipulating an arbitrary-precision ContourPlot
Question renamed
Jul
24
accepted Getting an InterpolatingFunction from a ContourPlot