asammdf 1.0.0

measurement file parsers

asammdf is a fast parser/editor for ASAM (Associtation for Standardisation of Automation and Measuring Systems) MDF (Measurement Data Format) files. Currently only version 3 is supported.

Project goals

The main goals for this library are:

• to be faster than the other Python based mdf libraries

• clean and simple data types

Dependencies

asammdf uses the following libraries

• numpy : the heart that makes all tick

• numexpr : for fromula based channel conversions

• blosc : optionally used for in memmory raw channel data compression

Usage

from asammdf import MDF3
mdf = MDF3('sample.mdf')
speed = mdf.get_signal_by_name('WheelSpeed')

Benchmarks

using a more complex file of 170MB with 180 data groups and 36000 channels the file

• file load:

  • asammdf 1.0.0 : 1040ms

  • mdfreader 0.2.2 : 3986ms

• file save:

  • asammdf 1.0.0 : 722ms

  • mdfreader 0.2.2 : 18800ms

• get channel data (10000 calls):

  • asammdf 1.0.0 : 918ms

  • mdfreader 0.2.2 : 11ms