loadFromFile

loadFromFile -  Loads the ECG signal from the full APEX recording file
   Input:
       filePath can be absolute or relative to working directory
   Outputs:
       sig is the raw ECG signal
       fs is the sampling 

   Example:
       [sig, fs] = loadFromFile('a2ecg');

   Process:
   1. The signal is first formatted in a row vector.
   2. The first minute of the signal is processed using our full 
      pipeline. If necessary, the signal is reversed (see invertIfNeeded).

0001 function [ sig, fs ] = loadFromFile( file )
0002 %loadFromFile -  Loads the ECG signal from the full APEX recording file
0003 %   Input:
0004 %       filePath can be absolute or relative to working directory
0005 %   Outputs:
0006 %       sig is the raw ECG signal
0007 %       fs is the sampling
0008 %
0009 %   Example:
0010 %       [sig, fs] = loadFromFile('a2ecg');
0011 %
0012 %   Process:
0013 %   1. The signal is first formatted in a row vector.
0014 %   2. The first minute of the signal is processed using our full
0015 %      pipeline. If necessary, the signal is reversed (see invertIfNeeded).
0016 %
0017 
0018 load(file + ".mat");
0019 
0020 data = eval(file);
0021 
0022 if(string(data.channels(1)) ~= 'ECG')
0023     print "Unexpected data format";
0024     return;
0025 end
0026 % Get the first channel (ecg)
0027 sig = data.data(:,1);
0028 if(~isrow(sig))
0029     sig = sig.';
0030 end
0031 
0032 fs = data.Fs;
0033 windowInSeconds = 60;
0034 %sig = invertIfNecessary( sig, fs, windowInSeconds);
0035 
0036 
0037 
0038 
0039 end
0040