pyqtgraph/examples/test_ImageItem.py
Luke Campagnola 6783f4fa26 sync changes from acq4:
- numerous fixes in close() functions
 - added Transform class
 - ROI widgets now operate in degrees instead of radians for easier Qt compatibility
2011-04-25 08:51:18 -04:00

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Python
Executable File

# -*- coding: utf-8 -*-
## Add path to library (just for examples; you do not need this)
import sys, os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
from PyQt4 import QtCore, QtGui
import numpy as np
import pyqtgraph as pg
app = QtGui.QApplication([])
## Create window with GraphicsView widget
win = QtGui.QMainWindow()
view = pg.GraphicsView()
#view.useOpenGL(True)
win.setCentralWidget(view)
win.show()
## Allow mouse scale/pan
view.enableMouse()
## ..But lock the aspect ratio
view.setAspectLocked(True)
## Create image item
img = pg.ImageItem()
view.scene().addItem(img)
## Set initial view bounds
view.setRange(QtCore.QRectF(0, 0, 200, 200))
## Create random image
data = np.random.normal(size=(50, 200, 200))
i = 0
def updateData():
global img, data, i
## Display the data
img.updateImage(data[i])
i = (i+1) % data.shape[0]
# update image data every 20ms (or so)
t = QtCore.QTimer()
t.timeout.connect(updateData)
t.start(20)
## Start Qt event loop unless running in interactive mode.
if sys.flags.interactive != 1:
app.exec_()