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visits member for 2 years, 7 months
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Mathematica apprentice

My gravatar was made with the following Mathematica code:

Graphics3D[{
  GrayLevel[.3], Specularity[White, 15],
  Lighting -> {{"Directional", 
     RGBColor[.3, .3, .4], {{5, 5, 10}, {5, 5, 0}}},
    {"Point", Black, {12, 3, 15}},  
    {"Point", White, {12, 3, 4}}},
  KnotData[{"TorusKnot", {2, 5}}, "ImageData"]}, 
 ViewVector -> {{0, 0, 5}, {0, 0, 0}}, Boxed -> False, 
 Background -> None, Axes -> False, ImageSize -> 1000]

Dec
21
comment Can Mathematica automatically take advantage of the GPU on the new Mac Pro?
Buy a nice display instead! (And keyboard and mouse too...:) As you can tell, I'm just jealous really...
Dec
20
comment Any ideas on how to use the Region` context?
Christmas has arrived in your region? :)
Dec
20
comment Any ideas on how to use the Region` context?
Region`RegionCentroid[Rectangle[{5, 5}, {25, 25}]] gives {15, 15}
Dec
20
comment Any ideas on how to use the Region` context?
Region`RegionMeasure[Circle[]] -> 2 Pi :)
Dec
20
comment Question about number theory
Hi there! Have you written the code for S yet?
Dec
20
revised How to plot and find the volume of a solid?
title spelling
Dec
20
comment Visualize difference between members of the list
@MohsenAfshin You could try Subsets[set, {2}] rather than Tuples...
Dec
20
comment How to parse a .css file generated by Mathematica? modify values, add some values
Hi - no I know very little about CSS, except that it cascades (inherits). But your question isn't clear - what are the different selectors for width. What is overriding what? And your 'parser' won't work on all CSS files (they can be very complex- even containing image data). I wonder why Mathematica doesn't parse CSS files?
Dec
19
comment How to create effect like Van Gogh's stroke brush?
Like it. Next time let's hope the questioner asks for Seurat or Mondrian or Vaserely... :)
Dec
19
comment How to create effect like Van Gogh's stroke brush?
Looks nice - the sky is a problem as you say, just not very van-goghy to start with .. It probably needs some of your hedcut-style texturing...
Dec
18
comment Problem to solve an integral equation
Also, watch out for upper-case variables... eg
Dec
18
comment Problem to solve an integral equation
Exp needs square brackets? Double equals for FindRoot?
Dec
18
comment How to get the time when a notebook is saved and closed
NotebookInformation[] might be useful.
Dec
18
comment How to create effect like Van Gogh's stroke brush?
@belisarius You go to some interesting parties...
Dec
18
comment Units: Custom-defined units possible?
@Wojciech yes, N@UnitConvert[Quantity[500,"Revolutions"/"Minutes"], "Revolutions"/"Seconds"] does give the result 8.333...
Dec
18
answered How to create effect like Van Gogh's stroke brush?
Dec
17
comment Is it possible to convert expressions containing Root objects to Excel formulas?
related
Dec
16
comment How to find the area between two curves
Hi Alison. You need to use Pi (not pi), and == (not =). And try specifying Reals for Solve's domain. (Although that might not be the real problem.) And I wonder, section 6.1 of what?
Dec
15
comment What is the Missing code in this Wolfram Blog article?
the blog post looks to be using Mathematica 7 - weren't a lot of image processing functions introduced in Mathematica 8?
Dec
14
revised WeatherData function problem: “NonMetricValue” returns undated list of values
coded