from sympy import *
from spb import plot_real_imag
phi = symbols('phi', real = True)
vec = cos(phi) + cos(phi - 2*pi/3)*exp(I*2*pi/3) + cos(phi - 4*pi/3)*exp(I*4*pi/3)
plot_real_imag(vec, (phi, 0, 2*pi))
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
Input In [4], in <module>
----> 1 plot_real_imag(vec, (phi, 0, 2*pi))
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/ccomplex/complex.py:465, in plot_real_imag(*args, **kwargs)
463 kwargs.setdefault("real", True)
464 kwargs.setdefault("imag", True)
--> 465 return _plot_complex(*args, **kwargs)
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/ccomplex/complex.py:219, in _plot_complex(show, *args, **kwargs)
217 p = Backend(*series, **kwargs)
218 if show:
--> 219 p.show()
220 return p
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/backends/matplotlib.py:942, in MatplotlibBackend.show(self)
940 def show(self):
941 """Display the current plot."""
--> 942 self.process_series()
943 if _show:
944 self._fig.tight_layout()
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/backends/matplotlib.py:938, in MatplotlibBackend.process_series(self)
934 # create the figure from scratch every time, otherwise if the plot was
935 # previously shown, it would not be possible to show it again. This
936 # behaviour is specific to Matplotlib
937 self._create_figure()
--> 938 self._process_series(self.series)
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/backends/matplotlib.py:349, in MatplotlibBackend._process_series(self, series)
347 x, y, param = s.get_data()
348 else:
--> 349 x, y = s.get_data()
350 lkw = dict(label=s.label, color=next(self._cl))
351 if s.is_point:
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/series.py:401, in Line2DBaseSeries.get_data(self)
379 """Return coordinates for plotting the line.
380
381 Returns
(...)
397 corresponding interactive series).
398 """
399 np = import_module('numpy')
--> 401 points = self.get_points()
402 if self.steps is True:
403 if self.is_2Dline:
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/series.py:1703, in ComplexPointSeries.get_points(self)
1691 def get_points(self):
1692 """Return arrays of coordinates for plotting.
1693
1694 Returns
(...)
1701 the imaginary part.
1702 """
-> 1703 return self._evaluate(self.expr)
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/series.py:1688, in ComplexPointSeries._evaluate(points)
1685 @staticmethod
1686 def _evaluate(points):
1687 np = import_module('numpy')
-> 1688 points = np.array([complex(p) for p in points])
1689 return np.real(points), np.imag(points)
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/spb/series.py:1688, in <listcomp>(.0)
1685 @staticmethod
1686 def _evaluate(points):
1687 np = import_module('numpy')
-> 1688 points = np.array([complex(p) for p in points])
1689 return np.real(points), np.imag(points)
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/sympy/core/expr.py:364, in Expr.__complex__(self)
362 result = self.evalf()
363 re, im = result.as_real_imag()
--> 364 return complex(float(re), float(im))
File ~/Documents/Development/envs/pygasflow_dev/lib/python3.9/site-packages/sympy/core/expr.py:359, in Expr.__float__(self)
357 if result.is_number and result.as_real_imag()[1]:
358 raise TypeError("can't convert complex to float")
--> 359 raise TypeError("can't convert expression to float")
TypeError: can't convert expression to float
Davide-sd
commented
2 years ago