DttData - a package for reading LIGO DTT data in matlab

based on DTT_XML by Koji Arai

usage:

data = DttData(filename);
[f,tf] = data.transferFunction(ch1name,ch2name);

Data extraction methods:
data.transferFunction(ch1,ch2)
data.coherence(ch1,ch2)
data.powerSpectrum(ch1)
data.timeSeries(ch1)