cormullion

9,985 reputation

11258

bio	website
	location	somewhere in England
	age
visits	member for	1 year, 4 months
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Mathematica apprentice

My gravatar is an eternal golden braid, made with the following Mathematica code:

Graphics3D[{
  GrayLevel[.3], Specularity[White, 15],
  Lighting -> {{"Directional", 
     RGBColor[1, .5, .4], {{5, 5, 10}, {5, 5, 0}}},
    {"Point", Yellow, {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]

	9,985 reputation	bio	website		visits	member for	1 year, 4 months
11258 badges		location	somewhere in England		seen	20 mins ago

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Mar 14	answered	AxesLabel in Histogram3D unreadable
Mar 13	comment	MixtureDistribution in Mathematica 7 @cham don't be discouraged if one of your questions gets downvoted. It happens to lots of us. And there are many ways you can contribute to the site: up and down voting, editing, questioning, answering, commenting... I was going to link to a FAQ entry saying as much, only more eloquently, but couldn't find one.
Mar 13	awarded	Informed
Mar 13	comment	MixtureDistribution in Mathematica 7 You can answer questions as well, you know! :)
Mar 13	comment	Distribution of random points in 3D space to simulate an Orion-like Nebula Perhaps people are worried that you're going to work your way through the entire universe and want to discourage you a bit. But it might be a good idea to generalise your questions a bit, as Jens said.
Mar 12	revised	How can I compile a ColorFunction with Blend? edit title
Mar 12	revised	Extract function arguments spelling in title
Mar 11	revised	Cumulative frequency plot Spelling
Mar 9	answered	Dashed mesh behind 3D object
Mar 9	comment	Distribution of random points in 3D space to simulate the Crab Nebula +1, Nice job @Simon. @Cham an easy way to squash the sphere is to use the `BoxRatios` option. Or else just specify the initial points more carefully. Also, since you want just the colours and coordinates, grab the first list inside that `Graphics3D` (without the `PointSize`) and save it as a separate list. A few simple list-editing operations and you're ready to export.
Mar 9	comment	How to define the tangent gradient operator? For the record, I asked Jim whether he wanted this site or mathematics in a comment about 1 minute after he asked the question, so we did try to help find the right site... My comment was deleted as soon as the question had been migrated. :)
Mar 8	comment	Distribution of random points in 3D space to simulate the Crab Nebula My god, it's full of stars!
Mar 8	comment	How to make a more comfortable and more effective notebook environment? See this question
Mar 7	comment	Using ReadList and Skip to read a file with periodic alternation of useful and useless data @szabolcs oh yes, awk would be good too. For a 1GB text file, `sed` can retrieve lines in a second or so.
Mar 7	awarded	Nice Answer
Mar 7	answered	Where to find a summary for Q functions?
Mar 7	revised	Variable name string to expression spelling in title
Mar 7	answered	Using ReadList and Skip to read a file with periodic alternation of useful and useless data
Mar 6	comment	Importing a matrix from a text file Related?
Mar 4	comment	High memory use while exporting a BMP Isn't BMP uncompressed? Googling for "Disadvantages of BMP" gives that impression...