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ConnectivitySettings

Namespace: CONNECTIVITYLIB  ·  Library: Connectivity Library  ·  Source: connectivity/connectivitysettings.h

#include <connectivity/connectivitysettings.h>

class CONNECTIVITYLIB::ConnectivitySettings

Mutable container that aggregates the inputs and intermediate spectral results required by every metric implementation in CONNECTIVITYLIB.

Each call to CONNECTIVITYLIB::ConnectivitySettings::append "append" adds one trial; the trial matrices live in m_trialData, while DPSS tapered spectra, cross-spectral densities and their imaginary-part derivatives are filled in lazily by whichever metric runs first. Cross-trial sums accumulate in m_intermediateSumData so that a second metric run on the same data set reuses those sums and skips the FFT pass entirely. Node positions can be derived from a FiffInfo (sensor space) or from a forward solution + FsSurfaceSet (source space) and are propagated into the resulting Network nodes.

Aggregates trial data, spectral cache and node geometry shared by all CONNECTIVITYLIB metrics.

Public Methods​

ConnectivitySettings()​

Constructs a ConnectivitySettings object.

clearAllData()​

clearIntermediateData()​

append(matInputData)​

append(matInputData)​

append(inputData)​

at(i)​

size()​

isEmpty()​

removeFirst(iAmount)​

removeLast(iAmount)​

setConnectivityMethods(sConnectivityMethods)​

getConnectivityMethods()​

setSamplingFrequency(iSFreq)​

getSamplingFrequency()​

setFFTSize(iNfft)​

getFFTSize()​

setWindowType(sWindowType)​

getWindowType()​

setNodePositions(fiffInfo, picks)​

setNodePositions(forwardSolution, surfSet)​

setNodePositions(matNodePositions)​

getNodePositions()​

getTrialData()​

getIntermediateSumData()​

Used in examples​

ex_connectivity​

Sensor- or source-level functional connectivity of averaged MEG/EEG data with a selectable metric, shown as a 3D network.

src/examples/ex_connectivity/connectivitysettingsmanager.h, line 97
ConnectivitySettings m_settings;
RtConnectivity::SPtr m_pRtConnectivity;
QList<Network> m_networkData;
QMap<QString, Vector4i> mColor;

ex_dsp_rt​

DSP real-time workers: averaging, covariance, noise spectrum, connectivity, HPI fitting and inverse operators.

src/examples/ex_dsp_rt/main.cpp, line 239
// ---------------------------------------------------------------------------------------------------------
// Connectivity: the same network as Connectivity::calculate, computed on a worker thread
ConnectivitySettings settings;
for (int trial = 0; trial < 5; ++trial) {
    MatrixXd data(2, 256);
    for (int t = 0; t < 256; ++t) {
        const double alpha = std::sin(2.0 * kPi * 10.0 * t / 256.0 + trial);
        data(0, t) = alpha + 0.3 * normal(gen) * 1e12;
        data(1, t) = alpha + 0.3 * normal(gen) * 1e12;
    }
    settings.append(data);
}
settings.setSamplingFrequency(256);
settings.setFFTSize(256);

ex_connectivity_comparison​

Compare connectivity metrics side by side on the same averaged sensor- or source-level data.

src/examples/ex_connectivity_comparison/main.cpp, line 195
ConnectivitySettings conSettings;

Also used in ex_connectivity_metrics, ex_connectivity_performance.

Authors of this file​