def getParamCombData(data, fix_param):
    """
    Extracts the data points from dataframe corresponding to a fixed single parameter combination
    """
    fix_param_data = data[(data['kappa'] == fix_param['kappa']) 
                        & (data['sigRamp'] == fix_param['sigRamp'])
                        & (data['sigSde'] == fix_param['sigSde'])
                        & (data['sld'] == fix_param['sld'])]
    return fix_param_data