Can you give an example of how to use rhrv_batch?

[marcusjzw]

It would be much appreciated. Just use the mitdb example just like in the rhrv call.

[avivrosenberg]

Hi,

Thanks for pointing that out; I need to add something about it to the README (and update it in general, it's not really accurate anymore).

Anyhow, until I do that, here's a script that I used a while back to analyze some data for my research. If you follow through and read some of the comments in the rhrv_batch function, it should give you a sense of how to use it.

folder = '...' 
output_filename = '...'

%% Analysis configuration

rec_types =     {'NSR1+2', 'NSR1', 'NSR2'};
rec_filenames = {'**/*', 'nsrdb/1*', 'nsr2db/nsr*'};

% rhrv parameters
params = {'defaults',...
    'filtrr.quotient.enable', 'false',...,
    'filtrr.rr_min', 0.4,...
    'filtrr.rr_max', 2.0,...
    'hrv_freq.methods', {'lomb'},...
    'hrv_freq.vlf_band', [0, 0.0033],...
    'hrv_freq.win_func', 'rectwin',...
    'hrv_freq.window_minutes', '',...
    'hrv_freq.osf', 1,...
    'mse.mse_metrics', false,...
    'mse.mse_max_scale', 0,...
    'dfa.n_incr', 4
};

%% Analyze data

[batch_data] = rhrv_batch(folder,...
    'rec_types', rec_types,...
    'rec_filenames', rec_filenames,...
    'ann_ext', 'atr',...
    'rhrv_params', params,...
    'min_nn', 300,...
    'output_filename', [folder filesep output_filename],...
    'writexls', true...
);

%% Save to file
save([folder filesep output_filename], 'batch_data');

Note that here the folder variable contains the path of a folder containing two folders nsrdb and nsr2db. These are two standard databases from PhysioNet. Also this example is pretty basic, it doesn't show all features of the rhrv_batch function, but you can build on it.

Hope it helps. Aviv