TypeError on resample: MF4 opened using the channels option

[novack96]

Python version

Please run the following snippet and write the output here

python=3.8.0 (default, Nov  6 2019, 16:00:02) [MSC v.1916 64 bit (AMD64)]
os=Windows-10-10.0.19041-SP0
numpy=1.22.2
asammdf=7.0.4

Code

MDF version

4.10

Code snippet

import asammdf as mdf
channelFilterList=["A1","A2", "iconInfo"]
etalonSignalName = "iconInfo"
filepath="C:\\meas\\test.mf4"
meas = mdf.MDF(filepath, memory="minimum", channels=channelFilterList)
meas.configure(integer_interpolation=2)
resampled = meas.resample(etalonSignalName)

Traceback

File "C:\git\kpitool\Preprocess\Preprocess.py", line 149, in resampleSignalsInMDF
resampled = meas.resample(etalonSignalName)
File "C:\Users\NOA1BP.conda\envs\kpitool\lib\site-packages\asammdf\mdf.py", line 2835, in resample
MDF._transfer_channel_group_data(mdf.groups[dg_cntr].channel_group, cg)
2022-05-31 15:33:20,983 [CRITICAL] TypeError: list indices must be integers or slices, not NoneType

Description

I have to open and work with large measurement files (~10GB, and with over 1,000,000 signals) so I need to filter and resample the measurement files before the actual data processing, and I ran into this issue.

I've tried resampling by removing the channels and memory options from the opening, and that's working just fine, but it takes way too long obviously because there are over a million signals. So I've applied a filter to it, (see below) so at least it is running without error.

meas = mdf.MDF(filepath).filter(["A1","A2", "iconInfo"])

But I think the resampling should be working for the channel filtered MDF object as well.

I cannot send these measurement files due to confidelity aggreements.

Thank you for your time and consideration.

[novack96]

Quick update:

I updated to the latest version v7.0.7, and retried but got the same error.

[danielhrisca]

The memory argument has been dropped since 5.0.0

Regarding the error I will have a look later

[david32]

It's just trying to resample channels that weren't loaded, see fix in the PR.

[novack96]

I've tried the development branch and now it's working flawlessly! 👏 💯 👍