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danielhrisca / asammdf

Fast Python reader and editor for ASAM MDF / MF4 (Measurement Data Format) files
GNU Lesser General Public License v3.0
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question about the channelgroup #1011

Closed HuixuanGan closed 5 months ago

HuixuanGan commented 5 months ago

We are using the asammdf to extract the data from mf4 files and we got several csv files, each one is a channelgroup. Yet we are confused about the reason for this spliting, can anyone explain us what is the definition of this channel group?

Thank you!

danielhrisca commented 5 months ago

A channel group contains channels that have have the same time stamps (they are sampled at the same time during the recording of the measurement, usually because they come from the same physical device).

To get a single CSV file you have to select the option Single time base from the GUI. The single time base is obtained by doing the union of all time bases from the channel groups, and the channels are interpolated using this single time base.

HuixuanGan commented 5 months ago

Thank you, it solved my problem!