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How can write a program to graph two different data (x=data1 & y=data2 )?

+1 vote
asked Dec 5, 2019 by Angel

I'm making a tool that measure several sensors non stop. I would like to make a graph in real time while the sensors are still measuring, but with recalculated data. The two variables I want to plot in a graph are x=speed and y=force.
Could anyone help me with the code please?

Should I first log some data in a csv file?

How can I make the graph?

1 Answer

+2 votes
answered Dec 11, 2020 by Tushar Khanna (190 points)
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt



commented Jan 23 by Ubirajara Costa (100 points)
It doesn't work in this environment.
When I try the provided code I keep getting the following:

Traceback (most recent call last):                                                                                                               
  File "main.py", line 1, in <module>                                                                                                            
    import pandas as pd                                                                                                                          
  File "/usr/lib/python3/dist-packages/pandas/__init__.py", line 40, in <module>                                                                 
    from pandas.core.api import *                                                                                                                
  File "/usr/lib/python3/dist-packages/pandas/core/api.py", line 12, in <module>                                                                 
    from pandas.core.series import Series, TimeSeries                                                                                            
  File "/usr/lib/python3/dist-packages/pandas/core/series.py", line 2617, in <module>                                                            
    import pandas.tools.plotting as _gfx                                                                                                         
  File "/usr/lib/python3/dist-packages/pandas/tools/plotting.py", line 23, in <module>                                                           
    import pandas.tseries.converter as conv                                                                                                      
  File "/usr/lib/python3/dist-packages/pandas/tseries/converter.py", line 7, in <module>                                                         
    import matplotlib.units as units                                                                                                             
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 967, in <module>                                                            
    rcParams = rc_params()                                                                                                                       
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 876, in rc_params                                                           
    fname = matplotlib_fname()                                                                                                                   
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 744, in matplotlib_fname                                                    
    configdir = _get_configdir()                                                                                                                 
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 613, in _get_configdir                                                      
    return _get_config_or_cache_dir(_get_xdg_config_dir())                                                                                       
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 590, in _get_config_or_cache_dir                                            
    return _create_tmp_config_dir()                                                                                                              
  File "/usr/lib/python3/dist-packages/matplotlib/__init__.py", line 522, in _create_tmp_config_dir                                              
    tempdir = os.path.join(tempdir, 'matplotlib-%s' % getpass.getuser())                                                                         
  File "/usr/lib/python3.4/getpass.py", line 170, in getuser                                                                                     
    return pwd.getpwuid(os.getuid())[0]                                                                                                          
KeyError: 'getpwuid(): uid not found: 14072'                                                                                                     
...Program finished with exit code 1                                                                                                             
Press ENTER to exit console.
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