Opening the binary data  #90

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1. jsiegle commented on Jan 2, 2021

   

   jsiegle

   on Jan 2, 2021

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   Are you loading the data in Matlab (load_open_ephys_binary.m) or Python (Python3/Binary.py)? Either way, the data will be loaded as a matrix with dimensions of samples x channels. Selecting one value in the second dimension (e.g. data[:,1] in Python) will return data for a specific channel.
2. Alkohost commented on Mar 1, 2021

   

   Alkohost

   on Mar 1, 2021

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   Would be nice to have a Matlab reader with optional loading of the selected channels if a data size is too huge and a memory is not enough. Has anyone solved this problem?
3. aacuevas commented on Mar 1, 2021

   

   aacuevas

   on Mar 1, 2021

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   For big datasets the MATLAB reader has an optional 'mmap' option that loads the file in memory mapped mode. In this mode the file is not loaded to memory in one go, but chunks are loaded and unloaded automatically by MATLAB as needed. In this case, it would be possible to load the data in this mode and just copy the required channels into a different array.

   See help load_open_ephys_binary for more info on this mode.
4. Alkohost commented on Mar 1, 2021

   

   Alkohost

   on Mar 1, 2021

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   Thanks, this is a good way.