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fahmed-214-Alexandrite
14-Alexandrite
June 28, 2019
Solved

Value must be a vector

  • June 28, 2019
  • 6 replies
  • 3279 views

Hello,

 

I am trying to simulate result in arrays but it is giving me an error that value must be a vector. I have tried to search my worksheet but am unable to identify the problem. Please help me with this. My version is prime 4.0

 

Thanks,

 

Faisal

Best answer by Werner_E

I have some tracing back the various function calls made (OK, honestly I'm to lazy to do so), but using Primes very basic trace feature I was able to trace back to function Lambda.

Obviously with the data you provide, function "a" does not return a vector, but a simply scalar and so "sort" throws that error. Probably because x.guess is not a vector.

B.png

6 replies

W
Werner_E25-Diamond IAnswer
25-Diamond I
June 28, 2019

I have some tracing back the various function calls made (OK, honestly I'm to lazy to do so), but using Primes very basic trace feature I was able to trace back to function Lambda.

Obviously with the data you provide, function "a" does not return a vector, but a simply scalar and so "sort" throws that error. Probably because x.guess is not a vector.

B.png

    F
    fahmed-214-AlexandriteAuthor
    14-Alexandrite
    July 1, 2019

    I think the lambda returns a value as xguess is in a vector (file attached). But I have no idea why it is saying that it must be a vector

    W
    Werner_E25-Diamond I
    25-Diamond I
    July 1, 2019

    The problem seems to be the vectorization in your function Phi.

    It also vectorizes x.guess making it a scalar.

     

    Look if the modified function Phi now does what you expect. I got rid of a lot of unnecessary and confusing parenthesis and I left vectorization even though it would not be needed as far as I see as you call the routines with scalars only.

     

     

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