# -*- coding: utf-8 -*-
"""
Created on Fri Nov 25 14:00:03 2016
@author: Ondrej
"""
import sys
import numpy as np
import matplotlib.pyplot as plt
import scipy.signal as scisig
import urllib2
def downl_save_prak(shot,OSC):
"""
Checks if file with data from 4 channel rigol osciloscopes (a,b,c,d according to your choice) has been already
downloaded. If not, it downloads it and saves as txt and returns all channels
as a numpy array for plotting
Arguments:
shot -- discharge number
OSC -- oscilloscope specification letter ('a', 'b', 'c' or 'd')
"""
if OSC=='a':
oscname='//DAS/0416RigolDS1074{}.ON/data_all'.format(OSC)
elif OSC=='b':
oscname='//DAS/0416RigolDS1074{}.ON/data_all'.format(OSC)
elif OSC=='c':
oscname='//DAS/0417RigolDS1074{}.ON/data_all'.format(OSC)
elif OSC=='d':
oscname='//DAS/0417RigolDS1074{}.ON/data_all'.format(OSC)
else:
print("Unknown oscilloscope or missing data in this discharge")
sys.exit(1)
diag='prak_osc_{}'.format(OSC)
url='http://golem.fjfi.cvut.cz/shots/'+ str(shot) + oscname
try:
X=np.loadtxt('Golem_{}_{}.txt'.format(shot, diag))
except:
print("Downloading {}".format(url))
file=urllib2.urlopen(url)
X=np.loadtxt(file)
np.savetxt('Golem_{}_{}.txt'.format(shot, diag),X)
print('Dimensions of the array: {}'.format(np.shape(X)))
return X
#Call funcion and do some simple plotting
X=downl_save_prak(23862,'d')
fig,ax=plt.subplots(nrows=3)
ax[0].plot(X[:,0])
ax[1].plot(np.cumsum(X[:,1]))
ax[2].plot(np.cumsum(X[:,2]))
plt.show()
