cormullion

9,945 reputation

11258

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	location	somewhere in England
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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]

	9,945 reputation	bio	website		visits	member for	1 year, 4 months
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May 20	comment	Does it make sense to ask for the color of a Graphics3D “voxel”? `PixelValue` and `ImageValue` already work with voxels, of course, because you can use them with `Image3D` images. However, there's no easy way to convert a `Graphics3D` object to an `Image3D` one, so your question is still valid.
May 20	revised	Function returning Null along with other unexpected expressions added table
May 20	comment	How can I write a Do loop that iterates over N iterators when N is not known a-priori? @rojo I'd love that sort of auto-completion - start typing, and Mr Wizard fills the rest in for me...!
May 19	comment	Function returning Null along with other unexpected expressions Good explanation!
May 19	comment	Function returning Null along with other unexpected expressions Essential reading!
May 19	answered	Function returning Null along with other unexpected expressions
May 19	comment	How to set image DPI? What platform are you on? I can see an Options button on my Mac system..
May 19	comment	Why don't these styling rules work when viewed in TableForm? Excellent - thanks.
May 19	comment	How to asynchronously download 100000 urls in an efficient way I don't understand this question - surely the limiting factor on speed is the network (and the nature of the URLs) rather than the code used to initiate the download?
May 19	comment	Why don't these styling rules work when viewed in TableForm? Nice explanation (+1) and you also used :> rather than ->
May 19	revised	How can I connect to a SQLServer database without login details? Deleting unnecessary text
May 18	revised	Why don't these styling rules work when viewed in TableForm? better title (i hope)
May 18	comment	The Orbit and Perigee of the Flamsteed comet you Mustafa upvote from me for this stellar answer
May 18	comment	Generating a list of all factorizations How about this?
May 18	comment	How could I find the correct values for every array that would lead me to unique summation number for every unique chain? I meant that if you were using Wolfram Mathematica software you would need to use different syntax from what you've shown.
May 18	comment	How could I find the correct values for every array that would lead me to unique summation number for every unique chain? Hi there. Are you using Mathematica for this?
May 18	revised	How to create a 3D curved surface, given some discrete points in space? copy edited
May 17	reviewed	Approve suggested edit on Adding custom GridLines to the “automatic” ones
May 17	comment	Adding custom GridLines to the “automatic” ones @bernd feel free to edit this answer or the question with this information. Not sure which would be best, but probably better than in a comment...!
May 17	comment	How can I import images from a Microsoft SQLServer database? FFD8 is the magic (hex!) number that indicates JPEG files... You'll need to convert the hexadecimal back to binary though?