### Polar plot by points? (i.e. polar_line?)

Hello!

If one operates in cartesian coordinates and has a function, he can plot it using *plot*. If it is a data points one can consider using *line* function. Accordingly, if we operate in polar coordinates, for the function plotting we have *polar_plot*, but what if we have only data points and we need them to be plotted in polar axes? Like, if we have an array of $[\phi_i, r_i]$.

I didn't find anything appropriate (tried polar_line and line(polar=True)) so I wrote:

```
def polar_line(polar_points, **kwds):
return line([(r * cos(phi), r * sin(phi)) for r, phi in polar_points], **kwds)
```

I am wondering is there anything default in sage for plotting in polar axes by data points?