本文介绍了如何将yaxis刻度标签设置在固定位置，以便当我向左或向右滚动时yaxis刻度标签应该可见?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的程序中，我先拍摄了人物，然后将人物导入画布.然后我将画布导入滚动区域.当我运行程序时，如果我向左滚动，yaxis刻度标签会隐藏，或者我向右滚动，yaxis刻度标签也会隐藏.我已经采取了两个轴.轴，轴2.我已经设置了axis2.yaxis.tick_right()和axes.yaxis.tick_right().
in my program i have taken figure first then i import figue into canvas. Then i import canvas into scroll area. when i run my program ,then if i turn left scroll the yaxis tick label goes hide or i turn right scroll the yaxis tick label goes also hide.i have taken two axis. axis,axis2. i have set axes2.yaxis.tick_right() and axes.yaxis.tick_right().
无论我向左还是向右滚动，我都希望yaxis刻度标签将保持在右侧并显示alyas.
import sys
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
import matplotlib.pyplot as plt
from matplotlib.figure import Figure
from PyQt5.QtWidgets import QMainWindow,QVBoxLayout
from PyQt5.QtWidgets import QApplication
from PyQt5 import QtCore, QtGui, QtWidgets
import datetime
from matplotlib.dates import num2date, date2num
from mpl_finance import candlestick_ochl as candlestick
import numpy as np
import matplotlib.ticker as ticker
import matplotlib.dates as mdates
import pylab as pl
class MainWindow_code_serarch(object):
def setup_code_serarch(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(870, 680)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayoutWidget1 = QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget1.setGeometry(QtCore.QRect(17, 30, 741, 13))
self.verticalLayoutWidget1.setObjectName("verticalLayoutWidget")
self.verticalLayout1 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget1)
self.verticalLayout1.setContentsMargins(0, 0, 0, 0)
self.verticalLayout1.setObjectName("verticalLayout1")
self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(17, 10, 940, 603))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
self.figure = Figure(figsize=(100,7.2), dpi=80, facecolor='k')
self.canvas = FigureCanvas(self.figure)
self.widget = QtWidgets.QWidget()
self.scroll_area = QtWidgets.QScrollArea(self.widget)
self.scroll_area.setWidget(self.canvas)
self.verticalLayout.addWidget(self.scroll_area)
axes,axes2 = self.figure.subplots(nrows=2, sharex=True)
data = {
'date': ['2018/10/30', '2018/11/03', '2018/11/04', '2018/11/05', '2018/11/07', '2018/11/10', '2018/11/11'],
'open': [8824, 8726.31, 8642.14, 8531.51, 8630.25, 8602.50, 8640.22],
'high': [8858, 8748.60, 8551.36, 8653.16, 8476.69, 8630, 8570.56],
'low': [8688, 8743.67, 8550.76, 8449.50, 8631.83, 8602.18, 8743.22],
'close': [8820, 8747.17, 8550.52, 8553., 8517.10, 8628.78, 8588.52],
'volume': [17759.56, 120000.17, 18739.52, 38599.50, 16517.10, 17723.78, 15588.52]
}
x = date2num([datetime.datetime.strptime(d, '%Y/%m/%d').date() for d in data['date']])
t= np.arange(len(data['date']))
candle_trace = zip(t, data['open'], data['high'], data['low'], data['close'], data['volume'])
candlestick(axes, candle_trace, width=.75, colorup='g', colordown='r')
axes2.plot(t, [1, 2, 3, 4, 7, 8, 9])
axes.set_position([0.02, 0.37, 0.88, 0.6])
axes2.set_position([0.02, 0.15, 0.88, 0.22])
axes.tick_params(axis='both', color='#ffffff', labelcolor='#ffffff')
axes.yaxis.tick_right()
axes2.tick_params(axis='both', color='#ffffff', labelcolor='#ffffff')
axes2.grid(color='lightgray', linewidth=.5, linestyle=':')
axes.grid(color='lightgray', linewidth=.5, linestyle=':')
axes2.yaxis.tick_right()
axes.autoscale_view()
axes2.autoscale_view()
axes.set_facecolor('#041105')
axes2.set_facecolor('#041105')
# N = len(dates)
axes.set_xticks(range(0, len((x)), 1))
axes.set_xticklabels([mdates.num2date(d).strftime('%b-%d') for d in x])
axes.set_xticklabels([mdates.num2date(d).strftime('%Y-%m-%d') for d in x])
axes2.set_xticklabels([mdates.num2date(d).strftime('%Y-%m-%d') for d in x])
self.canvas.draw()
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 246, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
# self.pushButton.clicked.connect(self.graphShowCode)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
# self.pushButton.setText(_translate("MainWindow", "OK"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = MainWindow_code_serarch()
ui.setup_code_serarch(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
输出图像:
当我向左滚动输出图像2时:
when i turn scroll left output image 2:
推荐答案
这是一种使用PyQt QtScrollBar 滚动轴内容的方法.通过根据滚动条的值更改轴的限制来完成此操作.为此，将注册QtScrollBar的actionTriggered方法的回调，以更改轴的限制.
Here is a way to scroll the content of an axes with a PyQt QtScrollBar. This is done by changing the limits of the axes depending on the scroll bar's value. To this end, a callback to the QtScrollBar's actionTriggered method is registered that changes the limits of the axes.
import sys
import matplotlib
# Make sure that we are using QT5
matplotlib.use('Qt5Agg')
import matplotlib.pyplot as plt
from PyQt5 import QtWidgets, QtCore
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
import numpy as np
class ScrollableWindow(QtWidgets.QMainWindow):
def __init__(self, fig, ax, step=0.1):
plt.close("all")
if not QtWidgets.QApplication.instance():
self.app = QtWidgets.QApplication(sys.argv)
else:
self.app = QtWidgets.QApplication.instance()
QtWidgets.QMainWindow.__init__(self)
self.widget = QtWidgets.QWidget()
self.setCentralWidget(self.widget)
self.widget.setLayout(QtWidgets.QVBoxLayout())
self.widget.layout().setContentsMargins(0,0,0,0)
self.widget.layout().setSpacing(0)
self.fig = fig
self.ax = ax
self.canvas = FigureCanvas(self.fig)
self.canvas.draw()
self.scroll = QtWidgets.QScrollBar(QtCore.Qt.Horizontal)
self.step = step
self.setupSlider()
self.nav = NavigationToolbar(self.canvas, self.widget)
self.widget.layout().addWidget(self.nav)
self.widget.layout().addWidget(self.canvas)
self.widget.layout().addWidget(self.scroll)
self.canvas.draw()
self.show()
self.app.exec_()
def setupSlider(self):
self.lims = np.array(self.ax.get_xlim())
self.scroll.setPageStep(self.step*100)
self.scroll.actionTriggered.connect(self.update)
self.update()
def update(self, evt=None):
r = self.scroll.value()/((1+self.step)*100)
l1 = self.lims[0]+r*np.diff(self.lims)
l2 = l1 + np.diff(self.lims)*self.step
self.ax.set_xlim(l1,l2)
print(self.scroll.value(), l1,l2)
self.fig.canvas.draw_idle()
# create a figure and some subplots
fig, ax = plt.subplots()
t = np.linspace(0,3000,101)
x = np.cumsum(np.random.randn(len(t)))
ax.plot(t,x, marker="o")
# pass the figure to the custom window
a = ScrollableWindow(fig,ax)
有关图中的滚动条，请参见可滚动条形图matplotlib
这篇关于如何将yaxis刻度标签设置在固定位置，以便当我向左或向右滚动时yaxis刻度标签应该可见?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！