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NM_104607384-Participant
4-Participant
January 18, 2023
Solved

program in function definition corrupts vector?

  • January 18, 2023
  • 1 reply
  • 1650 views

"This value must be a scalar"
Why does the standard lognormal (Pr_lnorm) work
but when I introduce a program into the function definition (Pr_tlnorm), I get the above error?

Best answer by JKT

... or

JKT_0-1674053189767.png

if you expect only vectors are arrays as input for id..

1 reply

W
Werner_E25-Diamond I
25-Diamond I
January 18, 2023

If you want to call a function which, like yours, expects a scalar argument "id" using a vector instead and expect this vector to be fed element by element as argument of the function and the various results to be collected in a result vector, you have to use vectorization!

Werner_E_0-1674052627518.png

 

    J
    JKT13-AquamarineAnswer
    13-Aquamarine
    January 18, 2023

    ... or

    JKT_0-1674053189767.png

    if you expect only vectors are arrays as input for id..

      N
      NM_104607384-ParticipantAuthor
      4-Participant
      January 18, 2023

      Thanks @Werner_E and @JKT 

      I'm not familiar enough with Mathcad (or perhaps maths) to be sure what the difference is between the two solutions, but the latter solution by @JKT does appear to offer the benefit of baking in the vectorization at the function definition stage.

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