polar coordinates?

Vlastimil Brom vlastimil.brom at gmail.com
Sun Dec 9 16:35:04 EST 2018

2018-12-09 17:30 GMT+01:00, Brian Christiansen <brian_christians at hotmail.com>:
> I have been messing with a program that is inspried by a video on
> youtube that is about the vizualization of pi.  I might make a post
> about that program someday, but I want to talk about something else.
> One of the ways of visualizing it is to put dots corresponding to each
> digits in a spiral pattern, in a color corresponding to what the digit
> is. I think this would be easiest, at least in the initial calculation
> of the point would be to use polar coordinates.
> For example, if I were to use a very simple archimedian spiral, r = 0 +
> (1 x theta), the "first 4" points, if theta increases by 1 degree
> (2pi/360 radians), are (0,0) (2pi/360 "units",2pi/360"radians")
> (4pi/360, 4pi/360) (6pi/360,6pi/360).
> The problem is that python (more specifically tkinter or graphics.py
> file that I downloaded) can't use polar coordinates directly to plot
> points (or at least I don't think they can).
> I guess my question is if python can do this natively or if there is a
> package somewhere (polar.py?) that can do this. I know there are some
> functions in cmath? that can help with parts of this, but I don't think
> that python can do all of these things natively.  If there is a package
> (or include file) that can do all of these things, I have not been able
> to find it.
> Brian Christiansen
> --
> https://mail.python.org/mailman/listinfo/python-list
there were already some hints regarding the calculations;
I'd like to suggest some dedicated plotting library, if you have
special needs in this area.
E.g. matplotlib is very useful and well documented in my opinion,


for plotting using the polar projection:


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