cwd = os.getcwd()
classpath = cwd + '/../classes/'
utilspath = cwd + '/../utils/'
sys.path.append(utilspath)
import utils
#get the base of the field folder
base = cwd + '/../../data/potar/'
## data of the needed input power at 1.4GHz for a given rotation
## for the voltage to be kept at -2V
datapotarhelix = base+ 'potarHelix.txt'
datapotarcornet = base+ 'potarCornet.txt'
#set the data in a list [rotation,power in dBm]
datahelix = utils.readpotardata(datapotarhelix)
datacornet = utils.readpotardata(datapotarcornet)
fig = plt.figure(figsize=(8, 8))
fig.suptitle('calibration potentiometre', fontsize=14, fontweight='bold')
ax1 = fig.add_subplot(111)
#fig.subplots_adjust(top=0.85)
ax1.set_xlabel('nr of rotation')
ax1.set_ylabel('power at -2V [dBm]')
ax1.plot(datahelix[0],datahelix[1],'b',lw=2,label='helix')
ax1.plot([0],[-22],'bo',label='reference helix')
ax1.plot(datacornet[0],datacornet[1],'g',lw=2,label='horn')
ax1.plot([-13.5],[-18.8],'go',label='reference horn')
def fillpotardata(self):
resistorhelixfile = self.datafolder + helixfile
self.resistorhelix = utils.readpotardata(resistorhelixfile)
resistorhornfile = self.datafolder + hornfile
self.resistorhorn = utils.readpotardata(resistorhornfile)