Python 在pyqt5中使用PlotWidget.plot()后,如何清除数据?
我的代码是:Python 在pyqt5中使用PlotWidget.plot()后,如何清除数据?,python,pyqt,pyqt5,pyqtgraph,Python,Pyqt,Pyqt5,Pyqtgraph,我的代码是: class Ui_Registos2(object): def setupUi(self, Registos2, Info): self.Grafico_2 = pg.PlotWidget(self.centralwidget) self.Grafico_2.setGeometry(QtCore.QRect(540, 430, 501, 331)) self.Grafico_2.setObjectName("Grafico
class Ui_Registos2(object):
def setupUi(self, Registos2, Info):
self.Grafico_2 = pg.PlotWidget(self.centralwidget)
self.Grafico_2.setGeometry(QtCore.QRect(540, 430, 501, 331))
self.Grafico_2.setObjectName("Grafico_2")
def openfile(self):
name = QFileDialog.getOpenFileName()
filename = name[0]
if len(filename) <=0:
return
try:
self.Info.file = open(filename, 'r')
except NameError:
return
self.Info.df = pd.read_excel(filename, sheet_name='Tabela', encoding="utf-8")
i = 0
items = []
# TABLE HEADER
for field in self.Info.df.columns:
items.append(QtGui.QStandardItem(field))
self.model.appendRow(items)
n = [] # CADA LINHA DA TABELA
while i<len(self.Info.df):
linha2 = self.Info.df.loc[i]
n = []
for item in linha2:
print(item)
n.append(QtGui.QStandardItem(str(item)))
self.model.appendRow(n)
i+=1
#FIRST GRAPH
self.y =self.Info.df.loc[:,'%']
self.x =self.Info.df.loc[:,'t']
pen = pg.mkPen(color=(255, 0, 0))
self.data_line = self.Grafico.plot(self.x, self.y, pen=pen)
self.plot = self.pw.plot(x, y, pen=None, symbol="o", symbolBrush="r")
class Ui\u注册表2(对象):
def设置UI(自身、注册表2、信息):
self.Grafico_2=pg.PlotWidget(self.centralwidget)
self.Grafico_2.setGeometry(QtCore.QRect(540430501331))
self.Grafico_2.setObjectName(“Grafico_2”)
def openfile(self):
name=QFileDialog.getOpenFileName()
filename=名称[0]
如果len(filename)可以使用plot.clear()清除绘图。我无法测试您的示例,但这应该有效:
self.Grafico.clear()
self.pw.clear()
可以使用plot.clear()清除绘图。我无法测试您的示例,但这应该有效:
self.Grafico.clear()
self.pw.clear()