core.py 46 KB
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    def calculate_fmin_Band(self):
        self.fmin = self.F0 - .5 * self.Band

    def check_cached_data_okay_to_use(self, cl):
        """ Check if cached data exists and, if it does, if it can be used """

        getmtime = os.path.getmtime

        if os.path.isfile(self.sftfilepath) is False:
            logging.info('No SFT file matching {} found'.format(
                self.sftfilepath))
            return False
        else:
            logging.info('Matching SFT file found')

        if getmtime(self.sftfilepath) < getmtime(self.config_file_name):
            logging.info(
                ('The config file {} has been modified since the sft file {} '
                 + 'was created').format(
                    self.config_file_name, self.sftfilepath))
            return False

        logging.info(
            'The config file {} is older than the sft file {}'.format(
                self.config_file_name, self.sftfilepath))
        logging.info('Checking contents of cff file')
        logging.info('Execute: {}'.format(
            'lalapps_SFTdumpheader {} | head -n 20'.format(self.sftfilepath)))
        output = subprocess.check_output(
            'lalapps_SFTdumpheader {} | head -n 20'.format(self.sftfilepath),
            shell=True)
        calls = [line for line in output.split('\n') if line[:3] == 'lal']
        if calls[0] == cl:
            logging.info('Contents matched, use old sft file')
            return True
        else:
            logging.info('Contents unmatched, create new sft file')
            return False

    def check_if_cff_file_needs_rewritting(self, content):
        """ Check if the .cff file has changed

        Returns True if the file should be overwritten - where possible avoid
        overwriting to allow cached data to be used
        """
        if os.path.isfile(self.config_file_name) is False:
            logging.info('No config file {} found'.format(
                self.config_file_name))
            return True
        else:
            logging.info('Config file {} already exists'.format(
                self.config_file_name))

        with open(self.config_file_name, 'r') as f:
            file_content = f.read()
            if file_content == content:
                logging.info(
                    'File contents match, no update of {} required'.format(
                        self.config_file_name))
                return False
            else:
                logging.info(
                    'File contents unmatched, updating {}'.format(
                        self.config_file_name))
                return True

    def run_makefakedata(self):
        """ Generate the sft data from the configuration file """

        # Remove old data:
        try:
            os.unlink("{}/*{}*.sft".format(self.outdir, self.label))
        except OSError:
            pass

        cl = []
        cl.append('lalapps_Makefakedata_v5')
        cl.append('--outSingleSFT=TRUE')
        cl.append('--outSFTdir="{}"'.format(self.outdir))
        cl.append('--outLabel="{}"'.format(self.label))
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        cl.append('--IFOs={}'.format(
            ",".join(['"{}"'.format(d) for d in self.detectors.split(",")])))
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        if self.add_noise:
            cl.append('--sqrtSX="{}"'.format(self.sqrtSX))
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        if self.minStartTime is None:
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            cl.append('--startTime={:0.0f}'.format(float(self.tstart)))
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        else:
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            cl.append('--startTime={:0.0f}'.format(float(self.minStartTime)))
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        if self.maxStartTime is None:
            cl.append('--duration={}'.format(int(self.duration)))
        else:
            data_duration = self.maxStartTime - self.minStartTime
            cl.append('--duration={}'.format(int(data_duration)))
        cl.append('--fmin={}'.format(int(self.fmin)))
        cl.append('--Band={}'.format(self.Band))
        cl.append('--Tsft={}'.format(self.Tsft))
        if self.h0 != 0:
            cl.append('--injectionSources="{}"'.format(self.config_file_name))

        cl = " ".join(cl)

        if self.check_cached_data_okay_to_use(cl) is False:
            logging.info("Executing: " + cl)
            os.system(cl)
            os.system('\n')

    def predict_fstat(self):
        """ Wrapper to lalapps_PredictFstat """
        c_l = []
        c_l.append("lalapps_PredictFstat")
        c_l.append("--h0={}".format(self.h0))
        c_l.append("--cosi={}".format(self.cosi))
        c_l.append("--psi={}".format(self.psi))
        c_l.append("--Alpha={}".format(self.Alpha))
        c_l.append("--Delta={}".format(self.Delta))
        c_l.append("--Freq={}".format(self.F0))

        c_l.append("--DataFiles='{}'".format(
            self.outdir+"/*SFT_"+self.label+"*sft"))
        c_l.append("--assumeSqrtSX={}".format(self.sqrtSX))

        c_l.append("--minStartTime={}".format(int(self.minStartTime)))
        c_l.append("--maxStartTime={}".format(int(self.maxStartTime)))

        logging.info("Executing: " + " ".join(c_l) + "\n")
        output = subprocess.check_output(" ".join(c_l), shell=True)
        twoF = float(output.split('\n')[-2])
        return float(twoF)
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