Timeline for Compile error with MapThread
Current License: CC BY-SA 3.0
11 events
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| Mar 1, 2016 at 11:24 | comment | added | xzczd♦ | @AlexeyGolyshev Wow, seems that I'll have a lot of answers to revise soon :D | |
| Mar 1, 2016 at 9:47 | comment | added | Alexey Golyshev | @xzczd +1 to your answer. In comments you wrote: "function defined with pattern-matching cannot be compiled". Very good comment, not only this phrase. Also +1. But in the next Mathematica it will be possible: youtu.be/… A lot of cool things expected ^_^ | |
| Mar 1, 2016 at 2:10 | comment | added | xzczd♦ |
@syhpphys "we can throw away the Flatten and Transpose and just replace the {n,nd,4} with {n*nd,4}" You are right, I forgot to take the code inside RandomVariate into account, thanks for pointing out, edited.
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| Mar 1, 2016 at 2:10 | history | edited | xzczd♦ | CC BY-SA 3.0 |
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| Mar 1, 2016 at 2:08 | comment | added | xzczd♦ |
@syhpphys I think the 2 key points here are 1. Normalize can not be compiled so one needs to replace it with a compiled equivalent i.e. #/Sqrt@Total[#^2] & . 2. function defined with pattern-matching cannot be compiled (see the 3rd rule here?), so one needs to replace it with a pure function, which can usually be compiled if it's formed by compilable function.
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| Feb 29, 2016 at 23:46 | vote | accept | syhpphys | ||
| Feb 29, 2016 at 22:46 | comment | added | syhpphys |
The key thing that makes this work seems to be to normalize the vectors first, then pass them to the function defined within the Function[ , ]. May I ask how you figured this out?
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| Feb 29, 2016 at 22:35 | comment | added | syhpphys |
Now that you've written it so nicely, it is clear that we can throw away the Flatten and Transpose and just replace the {n,nd,4} with {n*nd,4}.
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| Feb 29, 2016 at 8:13 | history | edited | xzczd♦ | CC BY-SA 3.0 |
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| Feb 29, 2016 at 7:57 | history | edited | xzczd♦ | CC BY-SA 3.0 |
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| Feb 29, 2016 at 7:52 | history | answered | xzczd♦ | CC BY-SA 3.0 |