how to read multiple channels raw file in python.

[Priyanka260895]

``# This is single channel raw file read code

import IMCtermite
import json
import os
import datetime
#import pdb

declare and initialize instance of "imctermite" by passing a raw-file

try :
imcraw = IMCtermite.imctermite(b"Measurement.raw")
except RuntimeError as e :
raise Exception("failed to load/parse raw-file: " + str(e))
#pdb.set_trace()

obtain list of channels as list of dictionaries (without data)

channels = imcraw.get_channels(False)
print(json.dumps(channels,indent=4, sort_keys=False))
print("number of channels: " + str(len(channels)))

#pdb.set_trace()

obtain all channels (including full data)

channelsdata = imcraw.get_channels(True)

everything that follows is an example that specifically makes use only of

the first (index = 0) channel ...

idx = 0

if len(channelsdata) > 0 :

# get first channel's data
chnydata = channelsdata[idx]['ydata']
chnxdata = channelsdata[idx]['xdata']
print("xdata: " + str(len(chnxdata)))
print("ydata: " + str(len(chnydata)))

# extract trigger-time
trigtim = datetime.datetime.fromisoformat(channels[idx]["trigger-time"])
print(trigtim)

# file output of data with absolute timestamp in 1st column
filname = os.path.join("./",channelsdata[idx]['name']+".csv")
print("writing output into " + filname)
with open(filname,'w') as fout :
    # include column header
    fout.write( str(channelsdata[idx]['xname']) + '[' + str(channelsdata[idx]['xunit']) + "]"
              + ","
              + str(channelsdata[idx]['yname']) + '[' + str(channelsdata[idx]['yunit']) + "]"
              + "\n" )
    # add data (introduce time shift according to trigger-time)
    for row in range(0,len(chnxdata)) :
        fout.write( str( (trigtim + datetime.timedelta(seconds=chnxdata[row])).isoformat() )
                  + ","
                  + str( chnydata[row])
                  + "\n" )

[Priyanka260895]

How to read multiple channel raw file in python?