Hi I would like to control the joulescope headless and record for 1h and save a plot as png. Tried to make use of pyjoulescope_examples Proof of concept: $ python bin\capture.py --duration 60 --jls 1 test_60s_capture_v1.jls $ python bin\current_range_extract.py test_60s_capture_v1.jls --plot […

Hi @lukGWF - The ∫ (integral) shown in the image above displays the integral of current over the window, which is the charge. The units are in coulombs (C), which is equivalent to ampere seconds. If you want ampere hours (Ah), divide by 3600.

Hi @lukGWF and welcome to the Joulescope forum! It sounds like you already know how to make automated captures. If I understand correctly, you are now trying to open a JLS and plot it to a PNG file. The Joulescope UI does not support this as an automated method, only by using the Joulescope UI ap…

Hi @mliberty Tried to start with this one as a function in pyjoulescope_examples\bin\export_jls2png.py: #!/usr/bin/env python3 # -*- coding: utf-8 -*- from joulescope import scan_require_one from joulescope.data_recorder import DataReader import sys import argparse import queue import signal from…

Qt is very picky about Widget layout. With the approach above, the wv widget is not part of the layout, so it will not behave correctly. Also, the code is going to load the last UI settings, which means anytime you use the actual Joulescope UI it may affect this script. It also never executes the…

I did more testing and edited the above code. It now works correctly on a bunch of JLS files and produces plots like this: [out]

Hi That is fast! I created a fork GitHub - ClimbTheWorld/pyjoulescope_examples at ft_export_jls2png I am not familiar with matplotlib that’s why I try to get the other up and running. I would need to add the stats to continue. If you could help me on that too I would be glad. When I tested with…

I updated the code to display statistics and added it to pyjoulescope_examples here . The plot now looks like: [out] Here is the command line I used: python bin\jls_plot.py e:\evk.jls --out out.png --stats I took a look at a few JLS files, and they look right without any mirroring. Could you pl…

Checked a 42s plot regarding mirroring matplotlib variant here: [42s_plot] and the joulescope variant: [42s_js]

I think that they are the same. Note that the jls_plot code is not plotting min/max. I followed what you had in your initial plot with min/max turned off. In the Joulescope UI, turn off min/max and see if they look the same. Note that adding min/max to the jls_plot script is easy.

Hi You are right. When removing the min/max it is the same. Can you add the charge also to the stat? Thanks for that support!!!

Hi I have continued and am finding peaks in long-time records. I have optimized the samplerate (recording) and --sample_count to a speedup the process of analysation. Using 200k samplerate and sample_count of: 500 the elapsed time is 10s, at 50:93s, at 5:286s. When I look at htop the process only …

Automation of plotting long-term records

Technical Discussion

lukGWF February 15, 2022, 2:27pm 19

Follow up see Splitting jls v2 file into multiple

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Automation of plotting long-term records

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