inv_dipole_fit_settings.cpp

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#include "inv_dipole_fit_settings.h"
 
using namespace Eigen;
using namespace INVLIB;
 
//=============================================================================================================
// DEFINE MEMBER METHODS
//=============================================================================================================
 
InvDipoleFitSettings::InvDipoleFitSettings()
{
    initMembers();
}
 
//=============================================================================================================
 
InvDipoleFitSettings::InvDipoleFitSettings(int *argc,char **argv)
{
    initMembers();
 
    if (!check_args(argc,argv))
        return;
 
    checkIntegrity();
}
 
//=============================================================================================================
 
InvDipoleFitSettings::~InvDipoleFitSettings()
{
}
 
//=============================================================================================================
 
void InvDipoleFitSettings::initMembers()
{
    // Init origin
    r0 << 0.0f,0.0f,0.04f;
 
    filter.filter_on = true;
    filter.size = 4096;
    filter.taper_size = 2048;
    filter.highpass = 0.0;
    filter.highpass_width = 0.0;
    filter.lowpass = 40.0;
    filter.lowpass_width = 5.0;
    filter.eog_highpass = 0.0;
    filter.eog_highpass_width = 0.0;
    filter.eog_lowpass = 40.0;
    filter.eog_lowpass_width = 5.0;
 
    accurate    = false;         
 
    guess_rad     = 0.080f;       
    guess_mindist = 0.010f;       
    guess_exclude = 0.020f;       
    guess_grid    = 0.010f;      
 
    grad_std     = 5e-13f;        
    mag_std      = 20e-15f;
    eeg_std      = 0.2e-6f;
    diagnoise    = false;         
 
    is_raw       = false;         
    include_meg  = false;         
    include_eeg  = false;        
    tmin         = -2*BIG_TIME;   
    tmax         = 2*BIG_TIME;
    tstep        = -1.0;          
    integ        = 0.0;
    bmin         = BIG_TIME;      
    bmax         = BIG_TIME;
    do_baseline  = false;         
    setno        = 1;             
    verbose      = false;
    omit_data_proj = false;
 
         
    eeg_sphere_rad = 0.09f;      
    scale_eeg_pos  = false;     
    mag_reg      = 0.1f;         
    fit_mag_dipoles = false;
 
    grad_reg     = 0.1f;         
    eeg_reg      = 0.1f;                  
 
    gui         = false;
}
 
//=============================================================================================================
 
void InvDipoleFitSettings::checkIntegrity()
{
    do_baseline = (bmin < BIG_TIME && bmax < BIG_TIME);
 
    if (measname.isEmpty()) {
        qCritical ("Data file name missing. Please specify one using the --meas option.");
        return;
    }
    if (dipname.isEmpty() && bdipname.isEmpty()) {
        qCritical ("Output file name missing. Please use the --dip or --bdip options to do this.");
        return;
    }
    if (guessname.isEmpty()) {
        if (bemname.isEmpty() && !guess_surfname.isEmpty() && mriname.isEmpty()) {
            qCritical ("Please specify the MRI/head coordinate transformation with the --mri option");
            return;
        }
    }
    if (!include_meg && !include_eeg) {
        qCritical ("Specify one or both of the --eeg and --meg options");
        return;
    }
    if (!omit_data_proj)
        projnames.prepend(measname);
 
    if (!bemname.isEmpty())
        qInfo("BEM              : %s",bemname.toUtf8().data());
    else {
        qInfo("Sphere model     : origin at (% 7.2f % 7.2f % 7.2f) mm",
               1000*r0[0],1000*r0[1],1000*r0[2]);
    }
    qInfo("Using %s MEG coil definitions.",accurate ? "accurate" : "standard");
    if (!mriname.isEmpty())
        qInfo("MRI transform    : %s",mriname.toUtf8().data());
    if (!guessname.isEmpty())
        qInfo("Guesses          : %s",guessname.toUtf8().data());
    else {
        if (!guess_surfname.isEmpty())
            qInfo("Guess space bounded by %s",guess_surfname.toUtf8().data());
        else
            qInfo("Spherical guess space, rad = %.1f mm",1000*guess_rad);
        qInfo("Guess grid       : %6.1f mm",1000*guess_grid);
        if (guess_mindist > 0.0)
            qInfo("Guess mindist    : %6.1f mm",1000*guess_mindist);
        if (guess_exclude > 0)
            qInfo("Guess exclude    : %6.1f mm",1000*guess_exclude);
    }
    qInfo("Data             : %s",measname.toUtf8().data());
    if (projnames.size() > 0) {
        qInfo("SSP sources      :");
        for (int k = 0; k < projnames.size(); k++)
            qInfo("\t%s",projnames[k].toUtf8().data());
    }
    if (!badname.isEmpty())
        qInfo("Bad channels     : %s",badname.toUtf8().data());
    if (do_baseline)
        qInfo("Baseline         : %10.2f ... %10.2f ms", 1000*bmin,1000*bmax);
    if (!noisename.isEmpty()) {
        qInfo("Noise covariance : %s",noisename.toUtf8().data());
        if (include_meg) {
            if (mag_reg > 0.0)
                qInfo("\tNoise-covariance regularization (mag)     : %-5.2f",mag_reg);
            if (grad_reg > 0.0)
                qInfo("\tNoise-covariance regularization (grad)    : %-5.2f",grad_reg);
        }
        if (include_eeg && eeg_reg > 0.0)
            qInfo("\tNoise-covariance regularization (EEG)     : %-5.2f",eeg_reg);
    }
    if (fit_mag_dipoles)
        qInfo("Fit data with magnetic dipoles");
    if (!dipname.isEmpty())
        qInfo("dip output      : %s",dipname.toUtf8().data());
    if (!bdipname.isEmpty())
        qInfo("bdip output     : %s",bdipname.toUtf8().data());
}
 
//=============================================================================================================
 
void InvDipoleFitSettings::usage(const char *name)
{
    qInfo("usage: %s [options]",name);
    qInfo("This is a program for sequential single dipole fitting.");
    qInfo("\nInput data:\n");
    qInfo("\t--meas name       specify an evoked-response data file");
    qInfo("\t--set   no        evoked data set number to use (default: 1)");
    qInfo("\t--bad name        take bad channel list from here");
 
    qInfo("\nModality selection:\n");
    qInfo("\t--meg             employ MEG data in fitting");
    qInfo("\t--eeg             employ EEG data in fitting");
 
    qInfo("\nTime scale selection:\n");
    qInfo("\t--tmin  time/ms   specify the starting analysis time");
    qInfo("\t--tmax  time/ms   specify the ending analysis time");
    qInfo("\t--tstep time/ms   specify the time step between frames (default 1/(sampling frequency))");
    qInfo("\t--integ time/ms   specify the time integration for each frame (default 0)");
 
    qInfo("\nPreprocessing:\n");
    qInfo("\t--bmin  time/ms   specify the baseline starting time (evoked data only)");
    qInfo("\t--bmax  time/ms   specify the baseline ending time (evoked data only)");
    qInfo("\t--proj name       Load the linear projection from here");
    qInfo("\t                  Multiple projections can be specified.");
    qInfo("\t                  The data file will be automatically included, unless --noproj is present.");
    qInfo("\t--noproj          Do not load the projection from the data file, just those given with the --proj option.");
    qInfo("\n\tFiltering (raw data only):\n");
    qInfo("\t--filtersize size desired filter length (default = %d)",filter.size);
    qInfo("\t--highpass val/Hz highpass corner (default = %6.1f Hz)",filter.highpass);
    qInfo("\t--lowpass  val/Hz lowpass  corner (default = %6.1f Hz)",filter.lowpass);
    qInfo("\t--lowpassw val/Hz lowpass transition width (default = %6.1f Hz)",filter.lowpass_width);
    qInfo("\t--filteroff       do not filter the data");
 
    qInfo("\nNoise specification:\n");
    qInfo("\t--noise name      take the noise-covariance matrix from here");
    qInfo("\t--gradnoise val   specify a gradiometer noise value in fT/cm");
    qInfo("\t--magnoise val    specify a magnetometer noise value in fT");
    qInfo("\t--eegnoise val    specify an EEG value in uV");
    qInfo("\t                  NOTE: The above will be used only if --noise is missing");
    qInfo("\t--diagnoise       omit off-diagonal terms from the noise-covariance matrix");
    qInfo("\t--reg amount      Apply regularization to the noise-covariance matrix (same fraction for all channels).");
    qInfo("\t--gradreg amount  Apply regularization to the MEG noise-covariance matrix (planar gradiometers, default = %6.2f).",grad_reg);
    qInfo("\t--magreg amount   Apply regularization to the MEG noise-covariance matrix (axial gradiometers and magnetometers, default = %6.2f).",mag_reg);
    qInfo("\t--eegreg amount   Apply regularization to the EEG noise-covariance matrix (default = %6.2f).",eeg_reg);
 
    qInfo("\nForward model:\n");
    qInfo("\t--mri name        take head/MRI coordinate transform from here (Neuromag MRI description file)");
    qInfo("\t--bem  name       BEM model name");
    qInfo("\t--origin x:y:z/mm use a sphere model with this origin (head coordinates/mm)");
    qInfo("\t--eegscalp        scale the electrode locations to the surface of the scalp when using a sphere model");
    qInfo("\t--eegmodels name  read EEG sphere model specifications from here.");
    qInfo("\t--eegmodel  name  name of the EEG sphere model to use (default : Default)");
    qInfo("\t--eegrad val      radius of the scalp surface to use in EEG sphere model (default : %7.1f mm)",1000*eeg_sphere_rad);
    qInfo("\t--accurate        use accurate coil definitions in MEG forward computation");
 
    qInfo("\nFitting parameters:\n");
    qInfo("\t--guess name      The source space of initial guesses.");
    qInfo("\t                  If not present, the values below are used to generate the guess grid.");
    qInfo("\t--guesssurf name  Read the inner skull surface from this fif file to generate the guesses.");
    qInfo("\t--guessrad value  Radius of a spherical guess volume if neither of the above is present (default : %.1f mm)",1000*guess_rad);
    qInfo("\t--exclude dist/mm Exclude points which are closer than this distance from the CM of the inner skull surface (default = %6.1f mm).",1000*guess_exclude);
    qInfo("\t--mindist dist/mm Exclude points which are closer than this distance from the inner skull surface (default = %6.1f mm).",1000*guess_mindist);
    qInfo("\t--grid    dist/mm Source space grid size (default = %6.1f mm).",1000*guess_grid);
    qInfo("\t--magdip          Fit magnetic dipoles instead of current dipoles.");
    qInfo("\nOutput:\n");
    qInfo("\t--dip     name    xfit dip format output file name");
    qInfo("\t--bdip    name    xfit bdip format output file name");
    qInfo("\nGeneral:\n");
    qInfo("\t--gui             Enables the gui.");
    qInfo("\t--help            print this info.");
    qInfo("\t--version         print version info.");
}
 
//=============================================================================================================
 
bool InvDipoleFitSettings::check_unrecognized_args(int argc, char **argv)
{
    if ( argc > 1 ) {
        QString args;
        for (int k = 1; k < argc; k++)
            args += QString(argv[k]) + " ";
        qCritical("Unrecognized arguments : %s", args.trimmed().toUtf8().data());
        return false;
    }
    return true;
}
 
//=============================================================================================================
 
bool InvDipoleFitSettings::check_args (int *argc,char **argv)
{
    int found;
    float fval;
    int   ival,filter_size;
 
    for (int k = 0; k < *argc; k++) {
        found = 0;
        if (strcmp(argv[k],"--gui") == 0) {
            found = 1;
            gui = true;
        }
        else if (strcmp(argv[k],"--version") == 0) {
            qInfo("%s compiled at %s %s",
                   argv[0],__DATE__,__TIME__);
            exit(0);
        }
        else if (strcmp(argv[k],"--help") == 0) {
            usage(argv[0]);
            exit(1);
        }
        else if (strcmp(argv[k],"--guess") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--guess: argument required.");
                return false;
            }
            guessname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--gsurf") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--gsurf: argument required.");
                return false;
            }
            guess_surfname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--guesssurf") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--guesssurf: argument required.");
                return false;
            }
            guess_surfname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--guessrad") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--guessrad: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%f",&fval) != 1) {
                qCritical ("Could not interpret the radius.");
                return false;
            }
            if (fval <= 0.0) {
                qCritical ("Radius should be positive");
                return false;
            }
            guess_rad = fval/1000.0;
        }
        else if (strcmp(argv[k],"--mindist") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--mindist: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%f",&fval) != 1) {
                qCritical ("Could not interpret the distance.");
                return false;
            }
            guess_mindist = fval/1000.0;
            if (guess_mindist <= 0.0)
                guess_mindist = 0.0;
        }
        else if (strcmp(argv[k],"--exclude") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--exclude: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%f",&fval) != 1) {
                qCritical ("Could not interpret the distance.");
                return false;
            }
            guess_exclude = fval/1000.0;
            if (guess_exclude <= 0.0)
                guess_exclude = 0.0;
        }
        else if (strcmp(argv[k],"--grid") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--grid: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%f",&fval) != 1) {
                qCritical ("Could not interpret the distance.");
                return false;
            }
            if (fval <= 0.0) {
                qCritical ("Grid spacing should be positive");
                return false;
            }
            guess_grid = guess_grid/1000.0;
        }
        else if (strcmp(argv[k],"--mri") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--mri: argument required.");
                return false;
            }
            mriname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--bem") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--bem: argument required.");
                return false;
            }
            bemname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--accurate") == 0) {
            found = 1;
            accurate = true;
        }
        else if (strcmp(argv[k],"--meg") == 0) {
            found = 1;
            include_meg = true;
        }
        else if (strcmp(argv[k],"--eeg") == 0) {
            found = 1;
            include_eeg = true;
        }
        else if (strcmp(argv[k],"--origin") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--origin: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%f:%f:%f",&r0[0],&r0[1],&r0[2]) != 3) {
                qCritical ("Could not interpret the origin.");
                return false;
            }
            r0[0] = r0[0]/1000.0f;
            r0[1] = r0[1]/1000.0f;
            r0[2] = r0[2]/1000.0f;
        }
        else if (strcmp(argv[k],"--eegrad") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--eegrad: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&eeg_sphere_rad) != 1) {
                qCritical () << "Incomprehensible radius:" << argv[k+1];
                return false;
            }
            if (eeg_sphere_rad <= 0) {
                qCritical ("Radius must be positive");
                return false;
            }
            eeg_sphere_rad = eeg_sphere_rad/1000.0;
        }
        else if (strcmp(argv[k],"--eegmodels") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--eegmodels: argument required.");
                return false;
            }
            eeg_model_file = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--eegmodel") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--eegmodel: argument required.");
                return false;
            }
            eeg_model_name = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--eegscalp") == 0) {
            found         = 1;
            scale_eeg_pos = true;
        }
        else if (strcmp(argv[k],"--meas") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--meas: argument required.");
                return false;
            }
            measname = QString(argv[k+1]);
            is_raw = false;
        }
        else if (strcmp(argv[k],"--raw") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--raw: argument required.");
                return false;
            }
            measname = QString(argv[k+1]);
            is_raw = true;
        }
        else if (strcmp(argv[k],"--proj") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--proj: argument required.");
                return false;
            }
            projnames.append(QString(argv[k+1]));
        }
        else if (strcmp(argv[k],"--noproj") == 0) {
            found = 1;
            omit_data_proj = true;
        }
        else if (strcmp(argv[k],"--bad") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--bad: argument required.");
                return false;
            }
            badname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--noise") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--noise: argument required.");
                return false;
            }
            noisename = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--gradnoise") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--gradnoise: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0.0) {
                qCritical ("Value should be positive");
                return false;
            }
            grad_std = 1e-13*fval;
        }
        else if (strcmp(argv[k],"--magnoise") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--magnoise: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0.0) {
                qCritical ("Value should be positive");
                return false;
            }
            mag_std = 1e-15*fval;
        }
        else if (strcmp(argv[k],"--eegnoise") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--eegnoise: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical () << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0.0) {
                qCritical ("Value should be positive");
                return false;
            }
            eeg_std = 1e-6*fval;
        }
        else if (strcmp(argv[k],"--diagnoise") == 0) {
            found = 1;
            diagnoise = true;
        }
        else if (strcmp(argv[k],"--eegreg") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--eegreg: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical () << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0 || fval > 1) {
                qCritical ("Regularization value should be positive and smaller than one.");
                return false;
            }
            eeg_reg = fval;
        }
        else if (strcmp(argv[k],"--magreg") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--magreg: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical () << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0 || fval > 1) {
                qCritical ("Regularization value should be positive and smaller than one.");
                return false;
            }
            mag_reg = fval;
        }
        else if (strcmp(argv[k],"--gradreg") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--gradreg: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical () << "Incomprehensible value:" << argv[k+1] ;
                return false;
            }
            if (fval < 0 || fval > 1) {
                qCritical ("Regularization value should be positive and smaller than one.");
                return false;
            }
            grad_reg = fval;
        }
        else if (strcmp(argv[k],"--reg") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--reg: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical () << "Incomprehensible value:" << argv[k+1];
                return false;
            }
            if (fval < 0 || fval > 1) {
                qCritical ("Regularization value should be positive and smaller than one.");
                return false;
            }
            grad_reg = fval;
            mag_reg = fval;
            eeg_reg = fval;
        }
        else if (strcmp(argv[k],"--tstep") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--tstep: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible tstep:" << argv[k+1];
                return false;
            }
            if (fval < 0.0) {
                qCritical ("Time step should be positive");
                return false;
            }
            tstep = fval/1000.0;
        }
        else if (strcmp(argv[k],"--integ") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--integ: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible integration time:" << argv[k+1];
                return false;
            }
            if (fval <= 0.0) {
                qCritical ("Integration time should be positive.");
                return false;
            }
            integ = fval/1000.0f;
        }
        else if (strcmp(argv[k],"--tmin") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--tmin: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible tmin:" << argv[k+1];
                return false;
            }
            tmin = fval/1000.0f;
        }
        else if (strcmp(argv[k],"--tmax") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--tmax: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible tmax:" << argv[k+1];
                return false;
            }
            tmax = fval/1000.0;
        }
        else if (strcmp(argv[k],"--bmin") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--bmin: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible bmin:" << argv[k+1];
                return false;
            }
            bmin = fval/1000.0f;
        }
        else if (strcmp(argv[k],"--bmax") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--bmax: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Incomprehensible bmax:" << argv[k+1];
                return false;
            }
            bmax = fval/1000.0f;
        }
        else if (strcmp(argv[k],"--set") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--set: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%d",&setno) != 1) {
                qCritical() << "Incomprehensible data set number:" << argv[k+1];
                return false;
            }
            if (setno <= 0) {
                qCritical ("Data set number must be > 0");
                return false;
            }
        }
        else if (strcmp(argv[k],"--filteroff") == 0) {
            found = 1;
            filter.filter_on = false;
        }
        else if (strcmp(argv[k],"--lowpass") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--lowpass: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Illegal number:" << argv[k+1];
                return false;
            }
            if (fval <= 0) {
                qCritical ("Lowpass corner must be positive");
                return false;
            }
            filter.lowpass = fval;
        }
        else if (strcmp(argv[k],"--lowpassw") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--lowpassw: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Illegal number:" << argv[k+1];
                return false;
            }
            if (fval <= 0) {
                qCritical ("Lowpass width must be positive");
                return false;
            }
            filter.lowpass_width = fval;
        }
        else if (strcmp(argv[k],"--highpass") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--highpass: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%g",&fval) != 1) {
                qCritical() << "Illegal number:" << argv[k+1];
                return false;
            }
            if (fval <= 0) {
                qCritical ("Highpass corner must be positive");
                return false;
            }
            filter.highpass = fval;
        }
        else if (strcmp(argv[k],"--filtersize") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--filtersize: argument required.");
                return false;
            }
            if (sscanf(argv[k+1],"%d",&ival) != 1) {
                qCritical() << "Illegal number:" << argv[k+1];
                return false;
            }
            if (ival < 1024) {
                qCritical ("Filtersize should be at least 1024.");
                return false;
            }
            for (filter_size = 1024; filter_size < ival; filter_size = 2*filter_size)
                ;
            filter.size       = filter_size;
            filter.taper_size = filter_size/2;
        }
        else if (strcmp(argv[k],"--magdip") == 0) {
            found = 1;
            fit_mag_dipoles = true;
        }
        else if (strcmp(argv[k],"--dip") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--dip: argument required.");
                return false;
            }
            dipname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--bdip") == 0) {
            found = 2;
            if (k == *argc - 1) {
                qCritical ("--bdip: argument required.");
                return false;
            }
            bdipname = QString(argv[k+1]);
        }
        else if (strcmp(argv[k],"--verbose") == 0) {
            found = 1;
            verbose = true;
        }
        if (found) {
            for (int p = k; p < *argc-found; p++)
                argv[p] = argv[p+found];
            *argc = *argc - found;
            k = k - found;
        }
    }
    return check_unrecognized_args(*argc,argv);
}