我试图在matplotlib中创建一个这样的量规:
http://www.highcharts.com/demo/gauge-solid
差不多可以了。以下是目前为止的代码:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.patches import Wedge
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
import sys,os
from PyQt4 import QtGui,QtCore
class MyMplCanvas(FigureCanvas):
"""Ultimately, this is a QWidget (as well as a FigureCanvasAgg, etc.)."""
def __init__(self, parent=None):
self.fig = Figure(facecolor='#DBE0E4')
self.axes = self.fig.add_subplot(111,axisbg='#DBE0E4')
self.axes.axis('off')
#here I create the contour of the gauge
#the two horizontal lines
x1=[-1,-0.6]
x2=[0.6,1.0]
y=[0.004,0.004]
self.axes.plot(x1,y,color='#646464')
self.axes.plot(x2,y,color='#646464')
#and the 2 circles(inner and outer)
circle1=plt.Circle((0,0),radius=1,fill=False)
circle1.set_edgecolor('#646464')
circle1.set_facecolor(None)
circle2=plt.Circle((0,0),radius=0.6,fill=False)
circle2.set_edgecolor('#646464')
circle2.set_facecolor(None)
self.axes.add_patch(circle1)
self.axes.add_patch(circle2)
#Scaling of the figure
self.axes.axis('scaled')
self.axes.set_xlim(-1.1,1.1)
self.axes.set_ylim(0,1.1)
FigureCanvas.__init__(self, self.fig)
self.setParent(parent)
FigureCanvas.updateGeometry(self)
class Gauge(MyMplCanvas):
def __init__(self,meter,parent=None):
MyMplCanvas.__init__(self)
self.patches=[]
#here I create the wedge to start
self.wedge=Wedge((0,0),0.99,1,179,width=0.38,facecolor='#FF0000')
self.patches.append(self.wedge)
self.timeClear=0
self.update_figure()
#self.Online_meter=meter
#here starts the update
timer=QtCore.QTimer(self)
timer.timeout.connect(self.update_figure)
timer.start(5000)
def update_figure(self):
#here is the update command
#every 5 sec, I call value from a measurement instrument
#here I let the program generate random values
self.timeClear=self.timeClear+1
#new_data=self.Online_meter.__call__()
self.wedge.set_theta1(180-np.random.random(1)*10/10*179)
self.axes.add_patch(self.wedge)
self.draw()
到目前为止,这是有效的。编写代码的目的是将它作为一个小部件添加到PyQt 4程序中。他们只剩下一个问题:当值更新时,量规突然改变,但我想看看量规是否更新(所以我想看看楔角的变化,移动如此缓慢),希望你们能帮我。 或者他们已经是一个很好的库,可以在pyqt4gui中插入好看的仪表?在
谢谢你提前帮了我!在
我自己解决的。在上面的代码中,程序本身生成一个介于0-10之间的数字(在update_figure方法中)。Supose数字是四。在
这意味着在楔子上:
5秒后,程序生成另一个数字(例如:6.5)
这意味着楔块的特性必须改变。在
通过在对象量规的update_figure方法中添加for循环:
^{pr2}$用新旧数之差除以10。你可以很容易地动态和缓慢地改变量规,加入这个for loop,让楔子自己画10次(θ1从旧数字到新数字在10步内变化),睡眠时间为100毫秒。如果这个解释不清楚,请问我,我会再解释一遍。在
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