使用chama模拟气体扩散，绘制凸包不显示

-#使用chama模拟气体扩散的时候，绘制凸包不能显示，显示出来的照片如下

#源代码如下

import numpy as np
import pandas as pd
import chama

#定义受体网络
x_grid = np.linspace(-100, 100, 21)
y_grid = np.linspace(-100, 100, 21)
z_grid = np.linspace(0, 40, 21)
grid = chama.simulation.Grid(x_grid, y_grid, z_grid)

#定义源
source = chama.simulation.Source(22,19,6,8)
source1 = chama.simulation.Source(0,0,0,5)
#定义大气条件
atm = pd.DataFrame({'Wind Direction': [45,60],'Wind Speed': [1.2,1.3],'Stability Class': ['A', 'B']}, index=[0, 10])
print(atm)
#初始高斯模型并运行
gauss_plume = chama.simulation.GaussianPlume(grid, source1, atm)
gauss_plume.run()
signal1 = gauss_plume.conc
#高斯抽吸模型运行
gauss_puff = chama.simulation.GaussianPuff(grid, source, atm, tpuff=1, tend=10)
gauss_puff.run(grid, 10)
signal = gauss_puff.conc
signal.to_csv('signal.csv')
print(signal)
# print(signal1)


#单个场景模拟显示,(绘制x-y,x-z和y-z的横截面。信号是对所有所需的时间步长求和)
chama.graphics.signal_xsection(signal1, 'S', threshold=0.001)

#多种场景下生成凸包
chama.graphics.signal_convexhull(signal=signal,scenarios=['S'],threshold=0.01)
# #固定传感器
# pos1 = chama.sensors.Stationary(location=(1,2,3))
# det1 = chama.sensors.Point(threshold=0.001, sample_times=[0,2,4,6,8,10])
# stationary_pt_sensor = chama.sensors.Sensor(position=pos1, detector=det1)
# #移动传感器
# pos2 = chama.sensors.Mobile(locations=[(0,0,0),(1,0,0),(1,3,0),(1,2,1)],speed=1.2)
# det2 = chama.sensors.Point(threshold=0.001, sample_times=[0,1,2,3,4,5,6,7,8,9,10])
# mobile_pt_sensor = chama.sensors.Sensor(position=pos2, detector=det2)
# #传感器视图显示，其中sensors_locations函数中sensors参数需要字典类型
# chama.graphics.sensor_locations(sensors={'sensor1':mobile_pt_sensor,'sensor2':stationary_pt_sensor})

有没有报错信息什么的