print_trace.py

##                                COPYRIGHT
##    Copyright (C) 2015 Kyle Briggs (kbrig035<at>uottawa.ca)
##
##    This file is part of cusumtools.
##
##    This program is free software: you can redistribute it and/or modify
##    it under the terms of the GNU General Public License as published by
##    the Free Software Foundation, either version 3 of the License, or
##    (at your option) any later version.
##
##    This program is distributed in the hope that it will be useful,
##    but WITHOUT ANY WARRANTY; without even the implied warranty of
##    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
##    GNU General Public License for more details.
##
##    You should have received a copy of the GNU General Public License
##    along with this program.  If not, see <http://www.gnu.org/licenses/>.

import tkinter.filedialog
import tkinter as tk
import numpy as np


def main():
    root=tk.Tk()
    root.withdraw()
    file_path_string = tkinter.filedialog.askopenfilename(initialdir='C:/Data/')
    root.destroy()
    length_s = 0.264425
    start_s = 3270.207934
    samplingfreq = 4166666
    with open(file_path_string, 'rb') as f:
        columntypes = np.dtype([('curr_pA', '>f8'), ('volt_mV', '>f8')])
        current = np.memmap(f, dtype=columntypes, mode='r')['curr_pA']
        index = file_path_string.find('.bin')
        outname = file_path_string[:index]+'_'+str(start_s)+'_'+str(length_s)+'_current.csv'
        print('start')
        print(len(current))
        np.savetxt(outname,current[int(start_s*samplingfreq):int((start_s+length_s)*samplingfreq)])
        print('end')
    
if __name__=='__main__':
    main()