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Questions tagged [asammdf]

64 questions
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How can I get Bus channel information in asammdf?

I'm trying to get information from .mdf files using Python. There are same signal name with diffrent Bus channel. (ECU1 ~ ECU4) So, I have to separate singals according to bus channel. Is it possible to do that? Sincerely, I need help. Thanks.
Neoguri
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Asammdf: What are channels, signals and samples

I‘m a student who has to work with MDF files and the Asammdf library. As I am not advanced, I can‘t seem to wrap my head around what the aforementioned things are. Specifically the difference between a channel and a signal. And does a MDF Object…
kerat
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Asammdf Library: Why do missing values implicitly get removed?

I have a python script that aims to remove "missing values" from certain timestamps and variables. I have not written this script myself and I'm trying to understand it. The script basically copies all channels and signals from the original MDF file…
kerat
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Saving to mdf3 using asammdf

I want to convert a blf-file (containing CAN-data) to a mdf (not mf4). I'm able to decode the CAN-frames using the corresponding dbc-files, the messages are stored in a list and then converted into a pandas dataframe. I create an empty MDF-object…
fejz1234
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Concatenate or merge .mdf files with different channels

When attempting to merge mdf files, I receive some version of the following error: asammdf.blocks.utils.MdfException: internal structure of file 2 is different; different channels I understand the reason for this error. My CAN device is only…
HungrySWE
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Reading MDF4-Files containing Ethernet Signals

I am trying to read logger measurement files whicha are in the .mf4-format. For this I am using asammdf as following: self.mdf = MDF("file.MF4", version="4.10") If the .mf4 file only contains CAN-Bus or Flexray signals, it works just fine. Now I am…
Tim
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Split mf4 files

I have a memory problem when trying to convert mf4 files larger than 7mb (example 100mb). I would like to split my files larger than 7MB into several 7MB files. Is this possible? Here is the error I have with the memory for large files Unable to…
Lyes S
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How to get physical conversion rate from mdf4

How can I extract the conversion factor and offset for the signals of an mdf4 file. I am using asammdf, but I couldn't figure out, from where it gets the information e.g. when I use the mdf.to_dataframe(raw=False) method.
abc
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How to use interpolation in Asammdf? (Python)

I'm trying to read .mdf file and write it to .csv file. I found irregular option(timestamps) but it had inconsistent gap. How can I get a regular interval of time, say of 0.002s ? My code is below. from asammdf import MDF, set_global_option import…
Neoguri
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.mdf to .csv conversion using asammdf

I am using asammdf lib to convert .mdf to df object. But in df i got some random float values in place of some string like "NOVALUE". How to avoid randomly filling items while converting mdf_to df? eg: I had crosschecked with Original CSV: 0 …
sangeetha gandhi
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Asammdf GUI not recognizing ID column as IDs (for CAN/J1939 IDs)

I'm trying to load this MF4 (MDF) file into asammdf GUI to extract its signals. The MF4 was created with Python using J1939 data extracted from a vehicle. The MF4 loads correctly into asammdf GUI, and in the Bus Logging tab I've loaded a DBC…
teddysaurus
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How to keep the same structure when copy the old MDF to a new MDF

I’m using python module asammdf. I need to edit the data in a datalist from an md4 file and repack the result. I use mdf.append to copy the old channel and add new_channel, but in the end, the new MDF file has a different structure from the old MDF…
hljjj
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Cannot install asammdf python package in docker

I need to use asammdf as part of my app to concatenate multiple .MF4 files. If you know about other ways, I will gladly try other packages. Problem is that it runs on windows but once I try to build docker image (on linux) with asammdf (tried same…
Tomas Trdla
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Is there a way to convert complete DataFrames to another datatype?

I was using the tool asammdf and realized that my DataFrame contains b-strings. I never heard and used that type of string before, however it is causing some problems with my other functions. Do you know if there is a efficient way to convert my…
tlets
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Zoom inset matplotlib with graphic instead of image

I'm currently writing a tool for handling MF4 files and plotting signals. I use asammdf for opening .mf4 files and getting info about the signals in them. I want to make a functionality that zooms in on a graphic whenever the signal reaches a…
rbsch
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