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spedas / pyspedas

Python-based Space Physics Environment Data Analysis Software
https://pyspedas.readthedocs.io/
MIT License
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ERG mepe() load routine produces unplottable tplot variable #739

Open jameswilburlewis opened 9 months ago

jameswilburlewis commented 9 months ago 
import pyspedas
from pytplot import tplot

mepe_vars = pyspedas.erg.mepe(trange=['2017-03-27', '2017-03-28'])
tplot('erg_mepe_l2_omniflux_FEDO')

gives an error at MPLPlotter/tplot.py line 497:

  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/pytplot/MPLPlotter/tplot.py", line 497, in tplot
    colorbar = fig.colorbar(colorbars[variable]['im'], cax=cax)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/figure.py", line 1310, in colorbar
    cb = cbar.Colorbar(cax, mappable, **cb_kw)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/_api/deprecation.py", line 384, in wrapper
    return func(*inner_args, **inner_kwargs)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/colorbar.py", line 402, in __init__
    self._reset_locator_formatter_scale()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/colorbar.py", line 1173, in _reset_locator_formatter_scale
    self._process_values()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/colorbar.py", line 1111, in _process_values
    b = self.norm.inverse(b)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/colors.py", line 1724, in inverse
    raise ValueError("Invalid vmin or vmax")
ValueError: Invalid vmin or vmax
Traceback (most recent call last):
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/backend_bases.py", line 1226, in _on_timer
    ret = func(*args, **kwargs)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/backends/backend_macosx.py", line 68, in callback_func
    callback()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/backends/backend_macosx.py", line 88, in _draw_idle
    self.draw()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/backends/backend_macosx.py", line 50, in draw
    super().draw()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/backends/backend_agg.py", line 400, in draw
    self.figure.draw(self.renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/artist.py", line 95, in draw_wrapper
    result = draw(artist, renderer, *args, **kwargs)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
    return draw(artist, renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/figure.py", line 3175, in draw
    mimage._draw_list_compositing_images(
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
    a.draw(renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
    return draw(artist, renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/axes/_base.py", line 3064, in draw
    mimage._draw_list_compositing_images(
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
    a.draw(renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/artist.py", line 72, in draw_wrapper
    return draw(artist, renderer)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/collections.py", line 2074, in draw
    self.update_scalarmappable()
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/collections.py", line 887, in update_scalarmappable
    self._mapped_colors = self.to_rgba(self._A, self._alpha)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/cm.py", line 493, in to_rgba
    x = self.norm(x)
  File "/Users/jwl/PycharmProjects/pyspedas/venv/lib/python3.9/site-packages/matplotlib/colors.py", line 1711, in __call__
    raise ValueError("Invalid vmin or vmax")
ValueError: Invalid vmin or vmax