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I got scalar error continually. could you give advice

I don't know well wht I got error cotinually.

I am shy to post often.

Best answer by Werner_E

You need to user vectorization! Thats a special Mathcad operator:

Excerpt from the help:

25-Diamond I

jinsuk Lee wrote:
I don't know well wht I got error cotinually.

Which error?

The first error I see is because of a nonexistent Excel Sheet you try to read from.

You provided "nrel aero data.xlsx" but "\nrel_r,c,t.xlsx" is missing.

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I forgot to attach.

thank you

And I got error here

I got massage about scalar error here

25-Diamond I

r.c is a vector but you compare that argument to a scalar in your function CL. This obviously can't work.

If you want the result for every element in r.c collected in a result vector, you have to use the vectorization operator over CL(.....).

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So you mean that I need to work to use "vector"?

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