Python asammdf library requires dependencies

Question

I am completely new to Python and try to run the example code 'Working with MDF' of a library called 'asammdf' (code can be found here: https://asammdf.readthedocs.io/en/master/examples.html)

When I run the .py-script I get the following error message:

WARNING:root:Signal plotting requires pyqtgraph or matplotlib Traceback (most recent call last): File "/Users/martin/PycharmProjects/mdfp3/WorkingWithMDF.py", line 46, in mdf4_cut.get('Float64_Signal').plot()

I added the pyqtgraph and matplotlib packages using the dependency manager in PyCharm, but no luck.

What am I doing wrong?

Edit: Running the pip install commands for the packages results in 'Requirement already satisfied' statements (see below)

(venv) martins-mbp-2:mdfp3 martin$ pip install pyqtgraph Requirement already satisfied: pyqtgraph in ./venv/lib/python3.7/site-packages (0.10.0) Requirement already satisfied: numpy in ./venv/lib/python3.7/site-packages (from pyqtgraph) (1.17.4)

and

(venv) martins-mbp-2:mdfp3 martin$ pip install matplotlib Requirement already satisfied: matplotlib in ./venv/lib/python3.7/site-packages (3.1.1) Requirement already satisfied: cycler>=0.10 in ./venv/lib/python3.7/site-packages (from matplotlib) (0.10.0) Requirement already satisfied: numpy>=1.11 in ./venv/lib/python3.7/site-packages (from matplotlib) (1.17.4) Requirement already satisfied: python-dateutil>=2.1 in ./venv/lib/python3.7/site-packages (from matplotlib) (2.8.1) Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.1 in ./venv/lib/python3.7/site-packages (from matplotlib) (2.4.5) Requirement already satisfied: kiwisolver>=1.0.1 in ./venv/lib/python3.7/site-packages (from matplotlib) (1.1.0) Requirement already satisfied: six in ./venv/lib/python3.7/site-packages (from cycler>=0.10->matplotlib) (1.13.0) Requirement already satisfied: setuptools in ./venv/lib/python3.7/site-packages/setuptools-40.8.0-py3.7.egg (from kiwisolver>=1.0.1->matplotlib) (40.8.0)

The only thing we can know is what the error tells you: You need to have matplotlib or pyqtgraph installed. — ImportanceOfBeingErnest
– ImportanceOfBeingErnest, Commented Nov 13, 2019 at 16:59
"No luck" as in "I had no luck installing them" or "I installed them but get exactly the same error"? — FiddleStix
– FiddleStix, Commented Nov 13, 2019 at 17:12
@FiddleStix thanks for support, but it looks like the packages are installed (please see what I added). — Martin Pfeffer
– Martin Pfeffer, Commented Nov 13, 2019 at 17:15

danielhrisca · Accepted Answer · 2019-11-15 08:28:29Z

2

It turns out that you need PyQt5 as well as either pyqtgraph or matplotlib. The GUI packages are considered 'optional', which would explain why they don't get installed automatically. FYI, I found this out by reading the exception in the asammdf\gui\plot.py file.

The GUI dependecies can be installed using this pip command

pip install asammdf[gui]

edited Nov 15, 2019 at 8:28

danielhrisca

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answered Nov 13, 2019 at 17:28

FiddleStix

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3 Comments

danielhrisca Over a year ago

The problem is that I expected that pyqtgraph had PyQt as dependency. I will address this in the setup file

FiddleStix Over a year ago

@danielhrisca I've never bumped into a package maintainer on here. Kudos to you for being on the ball. Do you have an alert set up or something?

danielhrisca Over a year ago

I'm a member of the Night's Watch keeping a vigilent eye out for trouble

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