--- a/pearl.py Mon Feb 22 16:50:03 2016 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,139 +0,0 @@
-import datetime
-import os
-import glob
-
-import numpy as np
-
-from generic import BaseLidarMeasurement, LidarChannel
-from ciao import CiaoMixin
-
-import pearl_netcdf_parameters
-from report_file import Report_file
-
-
-repository = '/mnt/storage/lidar_data/pearl/'
-
-
-class PearlLidarMeasurement(CiaoMixin, BaseLidarMeasurement):
-
- extra_netcdf_parameters = pearl_netcdf_parameters
-
- def import_file(self,filename):
- ''' Import a pearl file. '''
-
- if filename in self.files:
- print "File has been imported already:" + filename
- else:
- parameters, channels_dict = self.read_pearl_data(filename)
- start_time = self._gettime(parameters['Acq_date'],parameters['Acq_start_time'])
-
- for channel_info in channels_dict.itervalues():
-
- if channel_info['name'] == '1064ALR':
- name = '1064'
- tm = start_time
- elif channel_info['name'] == '1064BLR':
- name = '1064'
- tm = start_time + datetime.timedelta(seconds = 30)
- else:
- name = channel_info['name']
- tm = start_time
- if name not in self.channels:
- self.channels[name] = LidarChannel(channel_info)
- self.channels[name].data[tm] = channel_info['data']
- self.files.append(filename)
-
- def read_pearl_data(self, filename):
- '''
- Reads a pearl file.
-
- Returns:
- parameters - a dictionary of general parameters
- channels - a dictionary with keys the channel number and values lists
- [channel name, channel bin width, channel data].
- '''
- f = open(filename,'r') # Open the file
- s = f.read(26) # Read the first 26 bytes
-
- #Get the values in a dictionary
- parameters = {}
- parameters['Acq_date'] = s[0:10] # First 10 bytes are the acquisition date.
- parameters['Acq_start_time'] = s[10:20].strip() # Next 10 bytes are start time. Strip from trailing spaces.
- parameters['Channel_no'] = np.fromstring(s[20:22], dtype = np.int16) # Next 2 bytes are the number of channels. Short integer.
- parameters['Point_no'] = np.fromstring(s[22:26], dtype = np.int32) # Next 4 bytes are the number of points. Integer.
- p = parameters # Just for less typing
-
- # Read the channel parameters
- len = 20*p['Channel_no']
- s = f.read(len)
- channels = {}
- for (c1,n) in zip(range(0,len, 20),range(p['Channel_no'])):
- channels[str(n)] = {'name' : s[c1+10:c1+20].strip(),
- 'binwidth' : s[c1:c1+10].strip()}
-
- #Read the data
- data = np.fromfile(f,dtype = np.float32)
- #print filename + ': ' + str(data.size) +',' + str(p['Point_no']) +str(p['Channel_no'])
- data = data.reshape(p['Point_no'],p['Channel_no'])
- for ch in channels.iterkeys():
- channels[ch]['data'] = data[:,int(ch)]
- #Close the file
- f.close()
- return parameters,channels
-
-
-def get_measurement_for_interval(start_time, stop_time):
- ''' Searches for a pearl measurement based on a time interval
- '''
-
- correct_series = None
- day = datetime.timedelta(hours = 24)
-
- if start_time > stop_time:
- raise ValueError('Stop time should be after start time')
-
-
-
- #The list of directories based on the given time. Same, previous, Next day
- possible_paths = [get_path(t) for t in [start_time - day, start_time, start_time + day]
- if get_path(t) is not None]
- for path in possible_paths:
- try:
- rf = Report_file(path)
- except:
- rf = None
-
- if rf is not None:
- for serie in rf.series:
- if (start_time > serie.starttime) and (stop_time < serie.endtime):
- correct_series = serie
-
- if correct_series:
- files = correct_series.files.get('apd', []) + correct_series.files.get('mcb', [])
- m_series = PearlLidarMeasurement(files)
- m_subset = m_series.subset_by_time(start_time, stop_time)
- return m_subset
- else:
- return None
-
-
-def get_channel(tim, channel = '1064'):
- if channel =='1064':
- extension = '*.apd'
- else:
- extension = '*.mcb'
-
- dirstr = get_path(tim)
-
- if not os.path.isdir(dirstr):
- raise IOError('No measurement for that date (directory does not exist.).')
- #No measurement for that date (directory does not exist.).
- files = glob.glob(dirstr + extension)
- m = PearlLidarMeasurement(files)
- c = m.channels[channel]
- return c
-
-
-def get_path(tim):
- dirstr = repository + tim.strftime('%Y')+ '/' +tim.strftime('%d%m%Y') + '/'
- return dirstr
