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Re: Plotting the integer-and-fraction remainder of a function value modulo 360

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  Re: Plotting the integer-and-fraction remainder of a function value modulo 360 Terry Reedy <tjreedy@udel.edu> - 2014-04-10 03:25 -0400

#70021 — Re: Plotting the integer-and-fraction remainder of a function value modulo 360

On 4/10/2014 1:03 AM, Kim Plofker wrote:
> Thanks, the % operator is indeed what I want, but I want to use it with
> a function expression rather than with numbers alone.  And that seems to
> create a type error.
>
> Here's an example of what goes wrong:
>
> t = var('t')
> L(t) = t*725.5%360.0
>
> This produces the following error message:
>
> ...
> TypeError: unsupported operand type(s) for %:
> 'sage.symbolic.expression.Expression' and
> 'sage.symbolic.expression.Expression'
>
>
> I can use other arithmetic operators such as + and / in this function
> expression, but not %, and I don't understand why.  Is it indeed a
> Sage-specific problem rather than something I could work around in Python?

It seems that someone either forgot to implement % or decided not too. 
You will have to ask the sage people.

-- 
Terry Jan Reedy

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