line chart
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Irony
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7 changed files with 395 additions and 204 deletions
8
PyQtChart练习/charts/README.md
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8
PyQtChart练习/charts/README.md
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@ -0,0 +1,8 @@
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# PyQtChart练习
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[百度 echarts 折线图demo](http://echarts.baidu.com/examples.html#chart-type-line)
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### [Python3.5 or latter][PyQt5 PyQtChart]
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### [1.折线图](line/)
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- [1.折线图堆叠](line/LineStack.py)
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@ -12,10 +12,12 @@ Created on 2017年12月28日
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import sys
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from PyQt5.QtChart import QChartView, QChart, QLineSeries
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from PyQt5.QtCore import Qt, QPointF
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from PyQt5.QtChart import QChartView, QChart, QLineSeries, QLegend,\
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QCategoryAxis
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from PyQt5.QtCore import Qt, QPointF, QRectF, QPoint
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from PyQt5.QtGui import QPainter, QPen
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from PyQt5.QtWidgets import QApplication, QGraphicsLineItem
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from PyQt5.QtWidgets import QApplication, QGraphicsLineItem, QWidget, \
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QHBoxLayout, QLabel, QVBoxLayout, QGraphicsProxyWidget
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__Author__ = "By: Irony.\"[讽刺]\nQQ: 892768447\nEmail: 892768447@qq.com"
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@ -23,14 +25,86 @@ __Copyright__ = "Copyright (c) 2017 Irony.\"[讽刺]"
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__Version__ = "Version 1.0"
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class ToolTipItem(QWidget):
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def __init__(self, color, text, parent=None):
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super(ToolTipItem, self).__init__(parent)
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layout = QHBoxLayout(self)
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layout.setContentsMargins(0, 0, 0, 0)
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clabel = QLabel(self)
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clabel.setMinimumSize(12, 12)
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clabel.setMaximumSize(12, 12)
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clabel.setStyleSheet("border-radius:6px;background: rgba(%s,%s,%s,%s);" % (
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color.red(), color.green(), color.blue(), color.alpha()))
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layout.addWidget(clabel)
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self.textLabel = QLabel(text, self, styleSheet="color:white;")
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layout.addWidget(self.textLabel)
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def setText(self, text):
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self.textLabel.setText(text)
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class ToolTipWidget(QWidget):
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Cache = {}
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def __init__(self, *args, **kwargs):
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super(ToolTipWidget, self).__init__(*args, **kwargs)
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self.setAttribute(Qt.WA_StyledBackground, True)
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self.setStyleSheet(
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"ToolTipWidget{background: rgba(50, 50, 50, 100);}")
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layout = QVBoxLayout(self)
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self.titleLabel = QLabel(self, styleSheet="color:white;")
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layout.addWidget(self.titleLabel)
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def updateUi(self, title, points):
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self.titleLabel.setText(title)
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for serie, point in points:
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if serie not in self.Cache:
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item = ToolTipItem(
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serie.color(),
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(serie.name() or "-") + ":" + str(point.y()), self)
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self.layout().addWidget(item)
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self.Cache[serie] = item
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else:
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self.Cache[serie].setText(
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(serie.name() or "-") + ":" + str(point.y()))
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class GraphicsProxyWidget(QGraphicsProxyWidget):
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def __init__(self, *args, **kwargs):
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super(GraphicsProxyWidget, self).__init__(*args, **kwargs)
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self.setZValue(999)
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self.tipWidget = ToolTipWidget()
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self.setWidget(self.tipWidget)
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self.hide()
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def width(self):
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return self.size().width()
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def height(self):
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return self.size().height()
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def show(self, title, points, pos):
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self.setGeometry(QRectF(pos, self.size()))
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self.tipWidget.updateUi(title, points)
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super(GraphicsProxyWidget, self).show()
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class ChartView(QChartView):
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def __init__(self, *args, **kwargs):
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super(ChartView, self).__init__(*args, **kwargs)
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self.resize(800, 600)
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self.setRenderHint(QPainter.Antialiasing) # 抗锯齿
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# 自定义x轴label
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self.category = ["周一", "周二", "周三", "周四", "周五", "周六", "周日"]
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self.initChart()
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# 提示widget
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self.toolTipWidget = GraphicsProxyWidget(self._chart)
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# line
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self.lineItem = QGraphicsLineItem(self._chart)
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pen = QPen(Qt.gray)
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@ -39,29 +113,110 @@ class ChartView(QChartView):
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self.lineItem.setZValue(998)
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self.lineItem.hide()
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def mouseMoveEvent(self, event):
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super(ChartView, self).mouseMoveEvent(event)
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# 一些固定计算，减少mouseMoveEvent中的计算量
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# 获取x和y轴的最小最大值
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axisX, axisY = self._chart.axisX(), self._chart.axisY()
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min_x, max_x = axisX.min(), axisX.max()
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min_y, max_y = axisY.min(), axisY.max()
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self.min_x, self.max_x = axisX.min(), axisX.max()
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self.min_y, self.max_y = axisY.min(), axisY.max()
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# 坐标系中左上角顶点
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point_top = self._chart.mapToPosition(QPointF(min_x, max_y))
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self.point_top = self._chart.mapToPosition(
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QPointF(self.min_x, self.max_y))
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# 坐标原点坐标
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point_bottom = self._chart.mapToPosition(QPointF(min_x, min_y))
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step_x = (max_x - min_x) / (axisX.tickCount() - 1)
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self.point_bottom = self._chart.mapToPosition(
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QPointF(self.min_x, self.min_y))
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self.step_x = (self.max_x - self.min_x) / (axisX.tickCount() - 1)
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def mouseMoveEvent(self, event):
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super(ChartView, self).mouseMoveEvent(event)
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pos = event.pos()
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# 把鼠标位置所在点转换为对应的xy值
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x = self._chart.mapToValue(event.pos()).x()
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index = round((x - min_x) / step_x)
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pos_x = self._chart.mapToPosition(
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QPointF(index * step_x + min_x, min_y))
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self.lineItem.setLine(pos_x.x(), point_top.y(),
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pos_x.x(), point_bottom.y())
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self.lineItem.show()
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x = self._chart.mapToValue(pos).x()
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y = self._chart.mapToValue(pos).y()
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index = round((x - self.min_x) / self.step_x)
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# 得到在坐标系中的所有series的类型和点
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points = [(serie, serie.at(index))
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for serie in self._chart.series() if self.min_x <= x <= self.max_x and self.min_y <= y <= self.max_y]
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if points:
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pos_x = self._chart.mapToPosition(
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QPointF(index * self.step_x + self.min_x, self.min_y))
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self.lineItem.setLine(pos_x.x(), self.point_top.y(),
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pos_x.x(), self.point_bottom.y())
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self.lineItem.show()
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try:
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title = self.category[index]
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except:
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title = ""
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t_width = self.toolTipWidget.width()
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t_height = self.toolTipWidget.height()
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# 如果鼠标位置离右侧的距离小于tip宽度
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x = pos.x() - t_width if self.width() - \
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pos.x() - 20 < t_width else pos.x()
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# 如果鼠标位置离底部的高度小于tip高度
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y = pos.y() - t_height if self.height() - \
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pos.y() - 20 < t_height else pos.y()
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self.toolTipWidget.show(
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title, points, QPoint(x, y))
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else:
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self.toolTipWidget.hide()
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self.lineItem.hide()
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def handleMarkerClicked(self):
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marker = self.sender() # 信号发送者
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if not marker:
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return
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visible = not marker.series().isVisible()
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# # 隐藏或显示series
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marker.series().setVisible(visible)
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marker.setVisible(True) # 要保证marker一直显示
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# 透明度
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alpha = 1.0 if visible else 0.4
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# 设置label的透明度
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brush = marker.labelBrush()
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color = brush.color()
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color.setAlphaF(alpha)
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brush.setColor(color)
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marker.setLabelBrush(brush)
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# 设置marker的透明度
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brush = marker.brush()
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color = brush.color()
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color.setAlphaF(alpha)
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brush.setColor(color)
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marker.setBrush(brush)
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# 设置画笔透明度
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pen = marker.pen()
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color = pen.color()
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color.setAlphaF(alpha)
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pen.setColor(color)
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marker.setPen(pen)
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def handleMarkerHovered(self, status):
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# 设置series的画笔宽度
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marker = self.sender() # 信号发送者
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if not marker:
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return
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series = marker.series()
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if not series:
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return
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pen = series.pen()
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if not pen:
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return
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pen.setWidth(pen.width() + (1 if status else -1))
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series.setPen(pen)
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def handleSeriesHoverd(self, point, state):
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# 设置series的画笔宽度
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series = self.sender() # 信号发送者
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pen = series.pen()
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if not pen:
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return
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pen.setWidth(pen.width() + (1 if state else -1))
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series.setPen(pen)
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def initChart(self):
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self._chart = QChart(title="折线图堆叠")
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self._chart.setAcceptHoverEvents(True)
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# Series动画
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self._chart.setAnimationOptions(QChart.SeriesAnimations)
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dataTable = [
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["邮件营销", [120, 132, 101, 134, 90, 230, 210]],
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["联盟广告", [220, 182, 191, 234, 290, 330, 310]],
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@ -75,6 +230,7 @@ class ChartView(QChartView):
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series.append(j, v)
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series.setName(series_name)
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series.setPointsVisible(True) # 显示圆点
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series.hovered.connect(self.handleSeriesHoverd) # 鼠标悬停
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self._chart.addSeries(series)
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self._chart.createDefaultAxes() # 创建默认的轴
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axisX = self._chart.axisX() # x轴
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@ -83,6 +239,27 @@ class ChartView(QChartView):
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axisY = self._chart.axisY()
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axisY.setTickCount(7) # y轴设置7个刻度
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axisY.setRange(0, 1500) # 设置y轴范围
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# 自定义x轴
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axis_x = QCategoryAxis(
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self._chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
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axis_x.setTickCount(7)
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axis_x.setGridLineVisible(False)
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min_x = axisX.min()
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max_x = axisX.max()
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step = (max_x - min_x) / (7 - 1) # 7个tick
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for i in range(0, 7):
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axis_x.append(self.category[i], min_x + i * step)
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self._chart.setAxisX(axis_x, self._chart.series()[-1])
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# chart的图例
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legend = self._chart.legend()
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# 设置图例由Series来决定样式
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legend.setMarkerShape(QLegend.MarkerShapeFromSeries)
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# 遍历图例上的标记并绑定信号
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for marker in legend.markers():
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# 点击事件
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marker.clicked.connect(self.handleMarkerClicked)
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# 鼠标悬停事件
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marker.hovered.connect(self.handleMarkerHovered)
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self.setChart(self._chart)
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4
PyQtChart练习/charts/line/README.md
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4
PyQtChart练习/charts/line/README.md
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@ -0,0 +1,4 @@
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# 折线图
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### [1.折线图堆叠](LineStack.py)
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BIN
PyQtChart练习/charts/line/ScreenShot/LineStack.gif
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BIN
PyQtChart练习/charts/line/ScreenShot/LineStack.gif
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Binary file not shown.
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After Width: | Height: | Size: 327 KiB |
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@ -1,36 +1,36 @@
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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'''
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Created on 2017年12月19日
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@author: Irony."[讽刺]
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@site: http://alyl.vip, http://orzorz.vip, http://coding.net/u/892768447, http://github.com/892768447
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@email: 892768447@qq.com
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@file: LineChart
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@description:
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'''
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import sys
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from PyQt5.QtChart import QChartView, QLineSeries, QChart
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from PyQt5.QtGui import QPainter
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from PyQt5.QtWidgets import QApplication
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__version__ = "0.0.1"
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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chart = QChart()
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chart.setTitle("Line Chart 1")
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series = QLineSeries(chart)
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series.append(0, 6)
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series.append(2, 4)
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chart.addSeries(series)
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chart.createDefaultAxes() # 创建默认轴
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view = QChartView(chart)
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view.setRenderHint(QPainter.Antialiasing) # 抗锯齿
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view.resize(800, 600)
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view.show()
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sys.exit(app.exec_())
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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'''
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Created on 2017年12月19日
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@author: Irony."[讽刺]
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@site: http://alyl.vip, http://orzorz.vip, http://coding.net/u/892768447, http://github.com/892768447
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@email: 892768447@qq.com
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@file: LineChart
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@description:
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'''
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import sys
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from PyQt5.QtChart import QChartView, QLineSeries, QChart
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from PyQt5.QtGui import QPainter
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from PyQt5.QtWidgets import QApplication
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__version__ = "0.0.1"
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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chart = QChart()
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chart.setTitle("Line Chart 1")
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series = QLineSeries(chart)
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series.append(0, 6)
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series.append(2, 4)
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chart.addSeries(series)
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chart.createDefaultAxes() # 创建默认轴
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view = QChartView(chart)
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view.setRenderHint(QPainter.Antialiasing) # 抗锯齿
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view.resize(800, 600)
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view.show()
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sys.exit(app.exec_())
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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'''
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Created on 2017年12月19日
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@author: Irony."[讽刺]
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@site: http://alyl.vip, http://orzorz.vip, http://coding.net/u/892768447, http://github.com/892768447
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@email: 892768447@qq.com
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@file: LineChart自定义xy轴
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@description:
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'''
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import random
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import sys
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from PyQt5.QtChart import QChartView, QLineSeries, QChart, QCategoryAxis
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from PyQt5.QtCore import Qt
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from PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout
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__version__ = "0.0.1"
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m_listCount = 3
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m_valueMax = 10
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m_valueCount = 7
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def generateRandomData(listCount, valueMax, valueCount):
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random.seed()
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dataTable = []
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for i in range(listCount):
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dataList = []
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yValue = 0.0
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f_valueCount = float(valueCount)
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for j in range(valueCount):
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yValue += random.uniform(0, valueMax) / f_valueCount
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value = j + random.random() * m_valueMax / f_valueCount, yValue
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label = "Slice " + str(i) + ":" + str(j)
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dataList.append((value, label))
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dataTable.append(dataList)
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return dataTable
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m_dataTable = generateRandomData(m_listCount, m_valueMax, m_valueCount)
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def getChart(title):
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chart = QChart(title=title)
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for i, data_list in enumerate(m_dataTable):
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series = QLineSeries(chart)
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for value, _ in data_list:
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series.append(*value)
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series.setName("Series " + str(i))
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chart.addSeries(series)
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chart.createDefaultAxes() # 创建默认的轴
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return chart
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def customAxisX(chart):
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# 自定义x轴(均分)
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series = chart.series()
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if not series:
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return
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axisx = QCategoryAxis(
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chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
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minx = chart.axisX().min()
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maxx = chart.axisX().max()
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tickc = chart.axisX().tickCount()
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if tickc < 2:
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axisx.append("lable0", minx)
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else:
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step = (maxx - minx) / (tickc - 1) # tickc>=2
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for i in range(0, tickc):
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axisx.append("lable%s" % i, minx + i * step)
|
||||
chart.setAxisX(axisx, series[-1])
|
||||
|
||||
|
||||
def customTopAxisX(chart):
|
||||
# 自定义top x轴
|
||||
series = chart.series()
|
||||
if not series:
|
||||
return
|
||||
category = ["%d月" % i for i in range(1, 9)] # 1-8月
|
||||
axisx = QCategoryAxis(
|
||||
chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
|
||||
axisx.setGridLineVisible(False) # 隐藏网格线条
|
||||
axisx.setTickCount(len(category)) # 设置刻度个数
|
||||
chart.axisX().setTickCount(len(category)) # 强制修改x轴的刻度个数一致
|
||||
minx = chart.axisX().min()
|
||||
maxx = chart.axisX().max()
|
||||
tickc = chart.axisX().tickCount()
|
||||
step = (maxx - minx) / (tickc - 1) # tickc>=2
|
||||
for i in range(0, tickc):
|
||||
axisx.append(category[i], minx + i * step)
|
||||
chart.addAxis(axisx, Qt.AlignTop) # 添加到右侧
|
||||
series[-1].attachAxis(axisx) # 附加到series上
|
||||
|
||||
|
||||
def customAxisY(chart):
|
||||
# 自定义y轴(不等分)
|
||||
series = chart.series()
|
||||
if not series:
|
||||
return
|
||||
category = ["周一", "周二", "周三", "周四",
|
||||
"周五", "周六", "周日"]
|
||||
axisy = QCategoryAxis(
|
||||
chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
|
||||
axisy.setGridLineVisible(False) # 隐藏网格线条
|
||||
axisy.setTickCount(len(category)) # 设置刻度个数
|
||||
miny = chart.axisY().min()
|
||||
maxy = chart.axisY().max()
|
||||
tickc = axisy.tickCount()
|
||||
if tickc < 2:
|
||||
axisy.append(category[0])
|
||||
else:
|
||||
step = (maxy - miny) / (tickc - 1) # tickc>=2
|
||||
for i in range(0, tickc):
|
||||
axisy.append(category[i], miny + i * step)
|
||||
chart.addAxis(axisy, Qt.AlignRight) # 添加到右侧
|
||||
series[-1].attachAxis(axisy) # 附加到series上
|
||||
|
||||
|
||||
class Window(QWidget):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super(Window, self).__init__(*args, **kwargs)
|
||||
layout = QHBoxLayout(self)
|
||||
|
||||
# 自定义x轴(和原来的x轴值对应等分)
|
||||
chart = getChart("自定义x轴(和原来的x轴值对应等分)")
|
||||
customAxisX(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
# 自定义添加右侧y轴(等分,与左侧不对应)
|
||||
chart = getChart("自定义添加右侧y轴(等分,与左侧不对应)")
|
||||
customAxisY(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
# 自定义top x轴(按现有新的x轴划分)
|
||||
chart = getChart("自定义top x轴(按现有新的x轴划分)")
|
||||
customTopAxisX(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
app = QApplication(sys.argv)
|
||||
view = Window()
|
||||
view.resize(800, 600)
|
||||
view.show()
|
||||
sys.exit(app.exec_())
|
||||
#!/usr/bin/env python
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
'''
|
||||
Created on 2017年12月19日
|
||||
@author: Irony."[讽刺]
|
||||
@site: http://alyl.vip, http://orzorz.vip, http://coding.net/u/892768447, http://github.com/892768447
|
||||
@email: 892768447@qq.com
|
||||
@file: LineChart自定义xy轴
|
||||
@description:
|
||||
'''
|
||||
import random
|
||||
import sys
|
||||
|
||||
from PyQt5.QtChart import QChartView, QLineSeries, QChart, QCategoryAxis
|
||||
from PyQt5.QtCore import Qt
|
||||
from PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout
|
||||
|
||||
|
||||
__version__ = "0.0.1"
|
||||
|
||||
m_listCount = 3
|
||||
m_valueMax = 10
|
||||
m_valueCount = 7
|
||||
|
||||
|
||||
def generateRandomData(listCount, valueMax, valueCount):
|
||||
random.seed()
|
||||
dataTable = []
|
||||
for i in range(listCount):
|
||||
dataList = []
|
||||
yValue = 0.0
|
||||
f_valueCount = float(valueCount)
|
||||
for j in range(valueCount):
|
||||
yValue += random.uniform(0, valueMax) / f_valueCount
|
||||
value = j + random.random() * m_valueMax / f_valueCount, yValue
|
||||
label = "Slice " + str(i) + ":" + str(j)
|
||||
dataList.append((value, label))
|
||||
dataTable.append(dataList)
|
||||
return dataTable
|
||||
|
||||
|
||||
m_dataTable = generateRandomData(m_listCount, m_valueMax, m_valueCount)
|
||||
|
||||
|
||||
def getChart(title):
|
||||
chart = QChart(title=title)
|
||||
for i, data_list in enumerate(m_dataTable):
|
||||
series = QLineSeries(chart)
|
||||
for value, _ in data_list:
|
||||
series.append(*value)
|
||||
series.setName("Series " + str(i))
|
||||
chart.addSeries(series)
|
||||
chart.createDefaultAxes() # 创建默认的轴
|
||||
return chart
|
||||
|
||||
|
||||
def customAxisX(chart):
|
||||
# 自定义x轴(均分)
|
||||
series = chart.series()
|
||||
if not series:
|
||||
return
|
||||
axisx = QCategoryAxis(
|
||||
chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
|
||||
minx = chart.axisX().min()
|
||||
maxx = chart.axisX().max()
|
||||
tickc = chart.axisX().tickCount()
|
||||
if tickc < 2:
|
||||
axisx.append("lable0", minx)
|
||||
else:
|
||||
step = (maxx - minx) / (tickc - 1) # tickc>=2
|
||||
for i in range(0, tickc):
|
||||
axisx.append("lable%s" % i, minx + i * step)
|
||||
chart.setAxisX(axisx, series[-1])
|
||||
|
||||
|
||||
def customTopAxisX(chart):
|
||||
# 自定义top x轴
|
||||
series = chart.series()
|
||||
if not series:
|
||||
return
|
||||
category = ["%d月" % i for i in range(1, 9)] # 1-8月
|
||||
axisx = QCategoryAxis(
|
||||
chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
|
||||
axisx.setGridLineVisible(False) # 隐藏网格线条
|
||||
axisx.setTickCount(len(category)) # 设置刻度个数
|
||||
chart.axisX().setTickCount(len(category)) # 强制修改x轴的刻度个数一致
|
||||
minx = chart.axisX().min()
|
||||
maxx = chart.axisX().max()
|
||||
tickc = chart.axisX().tickCount()
|
||||
step = (maxx - minx) / (tickc - 1) # tickc>=2
|
||||
for i in range(0, tickc):
|
||||
axisx.append(category[i], minx + i * step)
|
||||
chart.addAxis(axisx, Qt.AlignTop) # 添加到右侧
|
||||
series[-1].attachAxis(axisx) # 附加到series上
|
||||
|
||||
|
||||
def customAxisY(chart):
|
||||
# 自定义y轴(不等分)
|
||||
series = chart.series()
|
||||
if not series:
|
||||
return
|
||||
category = ["周一", "周二", "周三", "周四",
|
||||
"周五", "周六", "周日"]
|
||||
axisy = QCategoryAxis(
|
||||
chart, labelsPosition=QCategoryAxis.AxisLabelsPositionOnValue)
|
||||
axisy.setGridLineVisible(False) # 隐藏网格线条
|
||||
axisy.setTickCount(len(category)) # 设置刻度个数
|
||||
miny = chart.axisY().min()
|
||||
maxy = chart.axisY().max()
|
||||
tickc = axisy.tickCount()
|
||||
if tickc < 2:
|
||||
axisy.append(category[0])
|
||||
else:
|
||||
step = (maxy - miny) / (tickc - 1) # tickc>=2
|
||||
for i in range(0, tickc):
|
||||
axisy.append(category[i], miny + i * step)
|
||||
chart.addAxis(axisy, Qt.AlignRight) # 添加到右侧
|
||||
series[-1].attachAxis(axisy) # 附加到series上
|
||||
|
||||
|
||||
class Window(QWidget):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
super(Window, self).__init__(*args, **kwargs)
|
||||
layout = QHBoxLayout(self)
|
||||
|
||||
# 自定义x轴(和原来的x轴值对应等分)
|
||||
chart = getChart("自定义x轴(和原来的x轴值对应等分)")
|
||||
customAxisX(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
# 自定义添加右侧y轴(等分,与左侧不对应)
|
||||
chart = getChart("自定义添加右侧y轴(等分,与左侧不对应)")
|
||||
customAxisY(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
# 自定义top x轴(按现有新的x轴划分)
|
||||
chart = getChart("自定义top x轴(按现有新的x轴划分)")
|
||||
customTopAxisX(chart)
|
||||
layout.addWidget(QChartView(chart, self))
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
app = QApplication(sys.argv)
|
||||
view = Window()
|
||||
view.resize(800, 600)
|
||||
view.show()
|
||||
sys.exit(app.exec_())
|
||||
|
|
|
|||
|
|
@ -137,16 +137,18 @@ class ChartView(QChartView):
|
|||
self.lineItem = QGraphicsLineItem(self._chart)
|
||||
self.lineItem.setZValue(998)
|
||||
self.lineItem.hide()
|
||||
|
||||
|
||||
# 一些固定计算，减少mouseMoveEvent中的计算量
|
||||
# 获取x和y轴的最小最大值
|
||||
axisX, axisY = self._chart.axisX(), self._chart.axisY()
|
||||
self.min_x, self.max_x = axisX.min(), axisX.max()
|
||||
self.min_y, self.max_y = axisY.min(), axisY.max()
|
||||
# 坐标系中左上角顶点
|
||||
self.point_top = self._chart.mapToPosition(QPointF(self.min_x, self.max_y))
|
||||
self.point_top = self._chart.mapToPosition(
|
||||
QPointF(self.min_x, self.max_y))
|
||||
# 坐标原点坐标
|
||||
self.point_bottom = self._chart.mapToPosition(QPointF(self.min_x, self.min_y))
|
||||
self.point_bottom = self._chart.mapToPosition(
|
||||
QPointF(self.min_x, self.min_y))
|
||||
self.step_x = (self.max_x - self.min_x) / (axisX.tickCount() - 1)
|
||||
# self.step_y = (self.max_y - self.min_y) / (axisY.tickCount() - 1)
|
||||
|
||||
|
|
@ -176,7 +178,7 @@ class ChartView(QChartView):
|
|||
name = self.sender().name()
|
||||
except:
|
||||
name = ""
|
||||
QToolTip.showText(QCursor.pos(), "%s\nx: %s\ny: %s" %
|
||||
QToolTip.showText(QCursor.pos(), "%s\nx: %s\ny: %s" %
|
||||
(name, point.x(), point.y()))
|
||||
|
||||
def initChart(self):
|
||||
|
|
|
|||
Loading…
Reference in a new issue