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Public waffleboard to track Robotics Nanodegree Issues
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Controls - Lesson 2.12 - hover zn tuner node does not work #124

Closed thatting closed 7 years ago

thatting commented 7 years ago

I have problems running the script for the hover_zn_tuner_node. I get an error saying that I don't have the matplotlib module? I don't understand this? I am using the latest VM (V2.1.0). The script for the twiddle_tuner_node runs fine.

thatting commented 7 years ago

Here is output of my terminal:......
robond@udacity:~$ rosrun quad_controller hover_zn_tuner_node Traceback (most recent call last): File "/home/robond/catkin_ws/src/RoboND-Controls-Lab/quad_controller/scripts/hover_zn_tuner_node", line 3, in import matplotlib.pyplot as plt ImportError: No module named matplotlib.pyplot

thatting commented 7 years ago

(continued) robond@udacity:~$ rosrun quad_controller hover_twiddle_tuner_node Initial Params: kp:0.0, ki:0.0, kd:0.0 iterations: 1 params: [0.0, 0.0, 0.0] best_run: 11601.7470335 iterations: 2 params: [0, 0.2, 0.2] best_run: 11522.6559698 iterations: 3 params: [0.22000000000000003, 0.19999999999999998, 0.19999999999999998] best_run: 11522.6559698 iterations: 4 params: [0.22, 0.19999999999999996, 0.19999999999999996] best_run: 11522.6559698

thatting commented 7 years ago

I have solved this problem now by running following command:

pip install matplotlib

I am not sure why the module was missing on the VM (I am using latest version: V2.1.0). But it works now, and I able to run the hover_zn_tuner_node.

kylesf commented 7 years ago

Not sure why that is the case but I installed it just to be safe. Thanks