Sharper Graph Problem

[Rafi]

Basic Information:

Printer Model: Ender 3
MCU / Printerboard: 1.1.4

Describe your issue:

Hi i got problem with generating graph from resonance test.
First i tried in WSL, then i installed Ubuntu Distro just to check whats going on.
Same result:

When i type:
SHAPER_CALIBRATE AXIS=Y
Klipper is creating file:/tmp/calibration_data_y_20231102_195232.csv
And i get output from Klipper:

Recommended shaper_type_y = zv, shaper_freq_y = 42.8 Hz
To avoid too much smoothing with ‘3hump_ei’, suggested max_accel <= 1900 mm/sec^2
Fitted shaper ‘3hump_ei’ frequency = 53.0 Hz (vibrations = 21.7%, smoothing ~= 0.292)
To avoid too much smoothing with ‘2hump_ei’, suggested max_accel <= 2100 mm/sec^2
Fitted shaper ‘2hump_ei’ frequency = 44.2 Hz (vibrations = 22.5%, smoothing ~= 0.276)
To avoid too much smoothing with ‘ei’, suggested max_accel <= 2100 mm/sec^2
Fitted shaper ‘ei’ frequency = 33.4 Hz (vibrations = 27.8%, smoothing ~= 0.289)
To avoid too much smoothing with ‘mzv’, suggested max_accel <= 3100 mm/sec^2
Fitted shaper ‘mzv’ frequency = 32.2 Hz (vibrations = 27.5%, smoothing ~= 0.196)
To avoid too much smoothing with ‘zv’, suggested max_accel <= 7100 mm/sec^2
Fitted shaper ‘zv’ frequency = 42.8 Hz (vibrations = 45.6%, smoothing ~= 0.089)

But when i try to get graph with command:
~/klipper/scripts/calibrate_shaper.py /tmp/calibration_data_y_20231102_195232.csv /tmp/shaper_calibrate_y.png

I get error message:
Traceback (most recent call last):
File “/home/rafi/klipper/scripts/calibrate_shaper.py”, line 174, in
main()
File “/home/rafi/klipper/scripts/calibrate_shaper.py”, line 153, in main
datas = [parse_log(fn) for fn in args]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/home/rafi/klipper/scripts/calibrate_shaper.py”, line 153, in
datas = [parse_log(fn) for fn in args]
^^^^^^^^^^^^^
File “/home/rafi/klipper/scripts/calibrate_shaper.py”, line 19, in parse_log
with open(logname) as f:
^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: ‘tmp/shaper_calibrate_y.png’

Anyone can tell me whats going on?
I upgraded my printer base frame with strong 3d printed support.
I do same commands like i did like a month ago, but i dont get graph png file because of that error.

[Sineos]

The correct command is:

~/klipper/scripts/calibrate_shaper.py /tmp/calibration_data_y_20231102_195232.csv -o /tmp/shaper_calibrate_y.png

[Rafi]

I downgraded Python to 3.9.1(Was always working maybe that was an issue).

With that version with your command entered i have output:

Traceback (most recent call last):
File “/home/rafi/klipper/scripts/calibrate_shaper.py”, line 11, in
import numpy as np, matplotlib
ModuleNotFoundError: No module named ‘numpy’

I did already(versions are latest):
sudo apt install python3-numpy python3-matplotlib libatlas-base-dev
~/klippy-env/bin/pip install -v numpy

I reinstalled everything including klipper and got same message:/

Tried also:
~/klippy-env/bin/python ~/klipper/scripts/calibrate_shaper.py /tmp/calibration_data_y2.csv -o /tmp/shaper_calibrate_y.png

With same result.

[Rafi]

If someone will read it some day i found a solution.

Solution was:

~/klippy-env/bin/pip install matplotlib

I messed up a bit made new distro in wsl and did everything properly now all works “out of the box”