Hello, I am fairly new to LabJack and am attempting to get started. I am using python 2.7 (Spyder IDE). I followed the instructions for setting up the U3 via command prompt. Everything runs smoothly until I want to run one of the example codes. I am attempting to run the example u3allio.py and no matter what IDE (even tried the command prompt window), I get the following error:
numChannels = int(sys.argv[1])
IndexError: list index out of range
Have I missed something in the documentation somewhere that is meant to get me over this speed bump? I have not modified anything in anyway from the example code. Also I am operating on Windows. I have tried using Spyder, Pycharm, and the command prompt to get this moving forward and end up with the same error in all 3. Thank you in advance.
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That example requires an argument (integer value) which specifies the number of analog input channels to use. So in command line it would be this to use 2 analog inputs:
python u3allio.py 2
The newer version on GitHub makes this more clear:
https://github.com/labjack/LabJackPython/blob/master/Examples/u3allio.py
Alternatively, modify the code:
numChannels = int(sys.argv[1])
And hard code the number of channels:
numChannels = 2 # Using 2 analog input channels