How can I get Python to represent a value of a function in degrees, i.e., with
values between 0 and 360, by taking the (non-integer) function expression mod
360?
That is, I have a function with non-integer values, called Longitude, which is
defined in terms of the variable t. I just want to plot Longitude modulo 360
for a range of values of t: that is, for every value of t, plot the
integer-AND-fraction remainder after dividing Longitude by 360.
But Python (in Sage) apparently won't let me use the int function or the //
operator on functions defined in terms of a variable: I get a "cannot evaluate
symbolic expression numerically" TypeError. How do I do this? There must be a
simple way to tell Python that I want it to compute the value of Longitude for
a given value of t and then take the integer-and-fraction remainder from
dividing by 360.
Many thanks,
Kim
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