diff --git a/examples/Legend.py b/examples/Legend.py index f7841151..3759c2e9 100644 --- a/examples/Legend.py +++ b/examples/Legend.py @@ -7,17 +7,37 @@ import initExample ## Add path to library (just for examples; you do not need th import pyqtgraph as pg from pyqtgraph.Qt import QtCore, QtGui +import numpy as np -plt = pg.plot() -plt.setWindowTitle('pyqtgraph example: Legend') -plt.addLegend() -#l = pg.LegendItem((100,60), offset=(70,30)) # args are (size, offset) -#l.setParentItem(plt.graphicsItem()) # Note we do NOT call plt.addItem in this case +win = pg.plot() +win.setWindowTitle('pyqtgraph example: BarGraphItem') -c1 = plt.plot([1,3,2,4], pen='r', symbol='o', symbolPen='r', symbolBrush=0.5, name='red plot') -c2 = plt.plot([2,1,4,3], pen='g', fillLevel=0, fillBrush=(255,255,255,30), name='green plot') -#l.addItem(c1, 'red plot') -#l.addItem(c2, 'green plot') +# # option1: only for .plot(), following c1,c2 for example----------------------- +# win.addLegend() + +# bar graph +x = np.arange(10) +y = np.sin(x+2) * 3 +bg1 = pg.BarGraphItem(x=x, height=y, width=0.3, brush='b', pen='w', name='bar') +win.addItem(bg1) + +# curve +c1 = win.plot([np.random.randint(0,8) for i in range(10)], pen='r', symbol='t', symbolPen='r', symbolBrush='g', name='curve1') +c2 = win.plot([2,1,4,3,1,3,2,4,3,2], pen='g', fillLevel=0, fillBrush=(255,255,255,30), name='curve2') + +# scatter plot +s1 = pg.ScatterPlotItem(size=10, pen=pg.mkPen(None), brush=pg.mkBrush(255, 255, 255, 120), name='scatter') +spots = [{'pos': [i, np.random.randint(-3, 3)], 'data': 1} for i in range(10)] +s1.addPoints(spots) +win.addItem(s1) + +# # option2: generic method------------------------------------------------ +legend = pg.LegendItem((80,60), offset=(70,20)) +legend.setParentItem(win.graphicsItem()) +legend.addItem(bg1, 'bar') +legend.addItem(c1, 'curve1') +legend.addItem(c2, 'curve2') +legend.addItem(s1, 'scatter') ## Start Qt event loop unless running in interactive mode or using pyside.