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How to use start_record method in ATX

Best Python code snippet using ATX

power_data_io.py

Source:power_data_io.py

1import time2import numpy as np3import transpose4# File format parameters5HEADER_LEN = 12       # Bytes: index, loops, n_FFT_int6FRAME_HEADER_LEN = 8  # Bytes: FGPA counts, Unix_time7DTYPE = np.dtype(np.uint32)8# Acquisition parameters9NTIME_RECORD = 1024     # Post integration, post-scrunch. Arbitrary, doesn't matter10FFT_RATE = 800e6 / 1024 / 2   # Hz11NFREQ = 102412FREQ0 = 800.13DELTA_F = -400. / 102414NPOL = 215POL_WEIGHTS = [0., 1.]16CAL_PERIOD_SAMPLES = 017class Ring(object):18    def __init__(self, filename, scrunch=1):19        self._filename = filename20        self._scrunch = scrunch21        with open(filename, 'r') as f:22            s = f.read(HEADER_LEN)23            f.seek(0, 2)24            size = f.tell()25        ring_bytes = size - HEADER_LEN26        integ_bytes = (FRAME_HEADER_LEN + NFREQ * NPOL * DTYPE.itemsize)27        self._ninteg_ring = ring_bytes // integ_bytes28        if ring_bytes % integ_bytes:29            raise RuntimeError('Odd filesize.')30        header = np.fromstring(s, DTYPE)31        self._sample_time = header[2] / FFT_RATE32        self._delta_t = self._sample_time * scrunch33        # The record we will call "0".34        # XXX35        self._record_offset = ((header[0] + int((header[1] - 0.4) * self._ninteg_ring))36                               // (scrunch * NTIME_RECORD))37        #self._record_offset = ((header[0] + header[1] * self._ninteg_ring)38        #                       // (scrunch * NTIME_RECORD))39    def current_records(self):40        ninteg_ring = self._ninteg_ring41        with open(self._filename, 'r') as f:42            s = f.read(HEADER_LEN)43        header = np.fromstring(s, DTYPE)44        index = header[0]45        loops = header[1]46        last_record = ((index + loops * ninteg_ring)47                       // (self._scrunch * NTIME_RECORD) + 1)48        last_record -= self._record_offset49        nrecord_ring = ninteg_ring // (self._scrunch * NTIME_RECORD)50        # The latest 80% of the ring is availble, for safety.51        first_available_record = last_record - int(nrecord_ring * 0.8)52        return first_available_record, last_record53    def get_parameters(self):54        parameters = {}55        parameters['cal_period_samples'] = CAL_PERIOD_SAMPLES56        parameters['delta_t'] = self._delta_t57        parameters['nfreq'] = NFREQ58        parameters['freq0'] = FREQ059        parameters['delta_f'] = DELTA_F60        parameters['ntime_record'] = NTIME_RECORD61        parameters['nrecords'] = self.current_records()[1]62        return parameters63    def read_records(self, start_record=None, end_record=None):64        first_available_record, last_record = self.current_records()65        if start_record is None:66            start_record = first_available_record67        if end_record is None:68            end_record = last_record69        if start_record < first_available_record:70            raise DataGone()71        if end_record > last_record:72            end_record = last_record73        if start_record >= last_record:74            raise ValueError("No data to read.")75        scrunch = self._scrunch76        out = np.empty((NFREQ, (end_record - start_record), NTIME_RECORD),77                       dtype=np.float32)78        time = np.empty(((end_record - start_record), NTIME_RECORD),79                        dtype=np.float32)80        integ_bytes_data = NPOL * NFREQ * DTYPE.itemsize81        integ_bytes = integ_bytes_data + FRAME_HEADER_LEN82        with open(self._filename, 'r') as f:83            for ii in range(end_record - start_record):84                abs_record_ind = ii + start_record + self._record_offset85                record_data = np.zeros((NTIME_RECORD, NFREQ), dtype=np.float32)86                for jj in range(NTIME_RECORD):87                    integ_ind_jj = (abs_record_ind * NTIME_RECORD + jj) * scrunch88                    for kk in range(self._scrunch):89                        integ_ind = (integ_ind_jj + kk) % self._ninteg_ring90                        #f.seek(HEADER_LEN + integ_ind * integ_bytes91                        #       + FRAME_HEADER_LEN)92                        f.seek(HEADER_LEN + integ_ind * integ_bytes)93                        s = f.read(FRAME_HEADER_LEN)94                        header = np.fromstring(s, dtype=DTYPE)95                        if kk == 0:96                            time[ii,jj] = header[1]97                        s = f.read(integ_bytes_data)98                        integ = np.fromstring(s, dtype=DTYPE)99                        integ.shape = (NPOL, NFREQ)100                        for pp in range(NPOL):101                            record_data[jj, :] += POL_WEIGHTS[pp] * integ[pp]102                out[:,ii,:] = transpose.blocked(record_data)103        out.shape = (NFREQ, (end_record - start_record) * NTIME_RECORD)104        time.shape = ((end_record - start_record) * NTIME_RECORD,)105        return out, time106class DataGone(Exception):107    pass108MOCK_N_SAMP_INTEG = 512109MOCK_RING_LEN = 200110MOCK_START_TIME = time.time() - MOCK_RING_LEN111class MockRing(object):112    def __init__(self, filename, scrunch):113        self._scrunch = scrunch114        self._delta_t = MOCK_N_SAMP_INTEG * self._scrunch / FFT_RATE115    def get_parameters(self):116        parameters = {}117        parameters['cal_period_samples'] = CAL_PERIOD_SAMPLES118        parameters['delta_t'] = self._delta_t119        parameters['nfreq'] = NFREQ120        parameters['freq0'] = FREQ0121        parameters['delta_f'] = DELTA_F122        parameters['ntime_record'] = NTIME_RECORD123        parameters['nrecords'] = self.get_nrecords()124        return parameters125    def read_records(self, start_record=None, end_record=None):126        """Right now just generates fake data."""127        128        first_available_record, last_record = self.current_records()129        if start_record is None:130            start_record = first_available_record131        if end_record is None:132            end_record = last_record133        if start_record < first_available_record:134            raise DataGone()135        if end_record > last_record:136            end_record = last_record137        if start_record >= last_record:138            raise ValueError("No data to read.")139        nrecords = end_record - start_record140        ntime = nrecords * NTIME_RECORD141        out = np.empty((NFREQ, nrecords, NTIME_RECORD), dtype=np.float32)142        # The fake part.143        from numpy import random144        # Every record is the same!145        noise = random.randn(NTIME_RECORD, 2, NFREQ)146        record_data = (noise + 32) * 10147        record_data = record_data.astype(np.uint32)148        for ii in range(nrecords):149            out[:,ii,:] = transpose.blocked(record_data[:,0,:] + record_data[:,1,:])150        t0 = time.time() - (self._delta_t * NTIME_RECORD * nrecords)151        time = t0 + np.arange(nrecords) * self._delta_t152        out.shape = (NFREQ, nrecords * NTIME_RECORD)153        return out, time154    def get_nrecords(self):155        """Totally fake."""156        last = int((time.time() - MOCK_START_TIME) / (self._delta_t * NTIME_RECORD))157        #print last158        return last159    def current_records(self):160        last = self.get_nrecords()161        first = last - int(MOCK_RING_LEN / self._delta_t / NTIME_RECORD)...

gather_ieee.py

Source:gather_ieee.py

1# import xplore23# query = xplore.xploreapi.XPLORE('cmvp85nujeda5s27qhyeze28')4# query.abstractText('SOA')5# data = query.callAPI()  6# print(data)7# cmvp85nujeda5s27qhyeze288import requests 9import datetime10import json1112## file name setting13dt = datetime.datetime.now()14timestamp = dt.timestamp()15filename = "ieee " + str(hex(int(timestamp)))16file_ext = ".json"1718## IEEE Explore API19url = "https://ieeexploreapi.ieee.org/api/v1/search/articles?parameter&apikey=cmvp85nujeda5s27qhyeze28"20## search parameter21querytext = "(SOA or ""service oriented architecture"")"22resp_format = "json"23## sorting and paging24max_records = 20025sort_field = "article_number"26sort_order = "asc"27start_record = 40012829params = {'querytext': querytext, 'format':resp_format, 'max_records':max_records, 'sort_field':sort_field, 'sort_order':sort_order, 'start_record':start_record}3031request_cnt = 2032for i in range(0, request_cnt):33    resp = requests.get(url, params=params, verify=False)34    params = {'querytext': querytext, 'format':resp_format, 'max_records':max_records, 'sort_field':sort_field, 'sort_order':sort_order, 'start_record':start_record} 35    print("params is " + str(params))36    # print("request count is " + str(i) + ", Status Code is " + str(resp.status_code) + ", and start record is " + str(start_record))37    start_record = start_record + max_records38    with open(filename + "-" + str(start_record) + file_ext, "a") as json_file :39        json_obj = resp.json()40        json.dump(json_obj["articles"], json_file)41        # json_file.write(", ")42        # json.dump(resp.json(), json_file) 43
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measuring-station.py

Source:measuring-station.py

1class ADC:2    def start_record(self):3        pass4class ADC1(ADC):5    def start_record(self):6        print('very complex implementation')7class ADC2(ADC):8    def start_record(self):9        print('very very complex implementation!')10class measuring_station:11    def start_record(self):12        pass13    def another_functions(self):14        pass15class ecg_measuring_station:16    def __init__(self, adc):17        self.adc = adc18    def start_record(self, some_args):19        self.adc.start_record(some_args)20if __name__ == "__main__":21    ecg1 = ecg_measuring_station(ADC1)22    ecg1.start_record(None)23    ecg2 = ecg_measuring_station(ADC2)...

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