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app.py
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import sys,os,thread
from PySide import QtCore, QtGui
import pyqtgraph as pg
import pyqtgraph.opengl as gl
import numpy as np
# import pyuic generated user interface file
import template
from lockin import *
lockin=Lockin()
lockin.clear()
app = QtGui.QApplication(sys.argv)
def update():
lockin.write("SNAP?1,2,3,4") #get values of x,y,amplitude and phase (recorded simultaneously) as an array
myapp.time.append(time.time()-myapp.start_time)
data=lockin.read(50)
lockin.clear()
x=float(data.split(',')[0])
y=float(data.split(',')[1])
amp=float(data.split(',')[2])
phase=float(data.split(',')[3])
myapp.x.append(x)
myapp.y.append(y)
myapp.amp.append(amp)
myapp.phase.append(phase)
myapp.c1.setData(myapp.time,myapp.x)
myapp.c2.setData(myapp.time,myapp.y)
myapp.c3.setData(myapp.time,myapp.amp)
myapp.c4.setData(myapp.time,myapp.phase)
def zoomx():
minX, maxX = myapp.xregion.getRegion()
myapp.c5.setPen(myapp.c1col)
myapp.c5.setData(myapp.time,myapp.x)
myapp.zoomgraph.setXRange(minX, maxX, padding=0)
def zoomy():
minX, maxX = myapp.yregion.getRegion()
myapp.c5.setPen(myapp.c2col)
myapp.c5.setData(myapp.time,myapp.y)
myapp.zoomgraph.setXRange(minX, maxX, padding=0)
def zoomamp():
minX, maxX = myapp.ampregion.getRegion()
myapp.c5.setPen(myapp.c3col)
myapp.c5.setData(myapp.time,myapp.amp)
myapp.zoomgraph.setXRange(minX, maxX, padding=0)
def zoomph():
minX, maxX = myapp.phregion.getRegion()
myapp.c5.setPen(myapp.c4col)
myapp.c5.setData(myapp.time,myapp.phase)
myapp.zoomgraph.setXRange(minX, maxX, padding=0)
class MyMainWindow(QtGui.QMainWindow, template.Ui_MainWindow):
def __init__(self, parent=None):
super(MyMainWindow, self).__init__(parent)
self.setupUi(self)
self.running = False
self.x=[]
self.y=[]
self.amp=[]
self.phase=[]
self.time=[]
self.c1col=(250,200,50)
self.c2col=(10,250,250)
self.c3col=(250,10,250)
self.c4col=(50,10,255)
self.timer = QtCore.QTimer()
self.xgraph.setLabel('left', 'X', units='V')
self.xgraph.setLabel('bottom', 'time', units='S')
self.xregion = pg.LinearRegionItem()
self.xgraph.addItem(self.xregion)
self.xregion.sigRegionChanged.connect(zoomx)
self.ygraph.setLabel('left', 'Y', units='V')
self.ygraph.setLabel('bottom', 'time', units='S')
self.yregion = pg.LinearRegionItem()
self.ygraph.addItem(self.yregion)
self.yregion.sigRegionChanged.connect(zoomy)
self.ampgraph.setLabel('left', 'amplitude', units='V')
self.ampgraph.setLabel('bottom', 'time', units='S')
self.ampregion = pg.LinearRegionItem()
self.ampgraph.addItem(self.ampregion)
self.ampregion.sigRegionChanged.connect(zoomamp)
self.phasegraph.setLabel('left', 'Phase', units='Degrees')
self.phasegraph.setLabel('bottom', 'time', units='S')
self.phregion = pg.LinearRegionItem()
self.phasegraph.addItem(self.phregion)
self.phregion.sigRegionChanged.connect(zoomph)
self.c1 = self.xgraph.plot()
self.c1.setPen(self.c1col)
self.c2 = self.ygraph.plot()
self.c2.setPen(self.c2col)
self.c3 = self.ampgraph.plot()
self.c3.setPen(self.c3col)
self.c4 = self.phasegraph.plot()
self.c4.setPen(self.c4col)
self.c5 = self.zoomgraph.plot()
self.c5.setPen((200,200,100))
self.start_time=time.time()
self.timer.timeout.connect(update)
def saveall(self,name='',directory='plots'):
if not name == 'auto': name = self.filename.text()
np.savetxt('%s/%s_x_%s.txt'%(directory,name,time.ctime()),np.column_stack([self.time,self.x]))
np.savetxt('%s/%s_y_%s.txt'%(directory,name,time.ctime()),np.column_stack([self.time,self.y]))
np.savetxt('%s/%s_amp_%s.txt'%(directory,name,time.ctime()),np.column_stack([self.time,self.amp]))
np.savetxt('%s/%s_phase_%s.txt'%(directory,name,time.ctime()),np.column_stack([self.time,self.phase]))
def __del__(self):
self.saveall('auto','autosaves')
print 'BYE BYE'
def start_measuring(self):
if not self.running :
self.timer.start(200)
self.init_button.setText('Stop measurements')
self.running = True
else:
self.timer.stop()
self.init_button.setText('Start measurements')
self.running = False
print 'Measuring....'
def autophase(self):
if self.running : self.timer.stop()
lockin.write("APHS") #Autophase
if self.running : self.timer.start(200)
def set_frequency(self):
if self.running : self.timer.stop()
lockin.write("FREQ %s"%(int(self.freq.value()*1000)) )
print "FREQ %s"%(int(self.freq.value()*1000))
if self.running : self.timer.start(200)
def set_amp(self):
if self.running : self.timer.stop()
lockin.write("SLVL %s"%(self.amplitude.value()) )
print "SLVL %s"%(self.amplitude.value())
if self.running : self.timer.start(200)
def cleartraces(self):
self.start_time=time.time()
self.time = []
self.x = []
self.y= []
self.amp = []
self.phase = []
print 'saved to file %s'%(self.filename.text())
myapp = MyMainWindow()
#thread.start_new_thread(update_buffer,())
myapp.show()
app.exec_()