mpl_toolkits.basemapのサイズが正しく調整されていません

Question

mpl_toolkits.basemapから埋め込まれたpysideウィンドウ内にマップがあります。ウィンドウのサイズを変更するか、NavigationToolbarからzoon/panボタンを使用すると、背景が正しく更新されません。

この原因は何ですか？

現在のコードは次のとおり

class geoDialog(QtGui.QDialog, Ui_mplDialog): 
    def __init__(self, parent=None): 
     super(geoDialog, self).__init__(parent) 
     # Basic preparation for an embedded matplotlib 
     self.setupUi(self) 
     #self.fig = Figure(figsize=(600,600), dpi=72, facecolor=(1,1,1), edgecolor=(1,1,1)) 
     #self.fig = Figure(figsize=(5,8), dpi=72) 
     self.fig = Figure() 
     #self.setFixedSize(600, 600) 
     #fig.set_picker(picker) 
     self.canvas = FigureCanvas(self.fig) 
     #self.verticalLayoutExtra = QtGui.QVBoxLayout() 
     self.verticalLayout.addWidget(self.canvas) 
     #self.verticalLayoutExtra.addWidget(self.canvas) 

     #self.ax = self.fig.add_axes([0.125,0.175,0.75,0.75]) #, axisbg='0.3') 
     self.ax = self.fig.add_axes([0,0,1,1]) 
     self.ax.set_title('Geographical data') 

     self.fig.set_frameon(False) 
     #fig.set_alpha(self, alpha) 

     #self.canvas.setSizePolicy(QtGui.QSizePolicy.Expanding, 
     #       QtGui.QSizePolicy.Expanding) 
     #self.canvas.updateGeometry() 

     #from matplotlib.pyplot import Scatter 

     self.navigation_toolbar = NavigationToolbar(self.canvas, self) 
     self.verticalLayout.addWidget(self.navigation_toolbar, 0) 

     from mpl_toolkits.basemap import Basemap 
     from geopy import geocoders 

     #Draw cities 
     gn = geocoders.Google() 
     lats = [] 
     lons = [] 
     cities = [] 
     allEntities = session.query(Entity).all() 
     #cities = ['Goirle, 5051','Neder Horst, 1394' , 'New Castle, NE1'] 
     for e in allEntities: 
      if e.entityCity is not None: 
       cities.append(str(e.country + ", " + e.entityCity + ", " + e.entityZipCode)) 

     for city in cities: 
      print city 
      place, (lat, lng) = gn.geocode(city) 
      lats.append(lat) 
      lons.append(lng) 

     if len(cities) > 0:  
      llcrnrlatMin = min(lats) - 5 
      urcrnrlatMax = max(lats) + 5 
      llcrnrlonMin = min(lons) - 5 
      urcrnrlonMax = max(lons) + 5 

      ratio = (urcrnrlonMax - llcrnrlonMin)/(urcrnrlatMax - llcrnrlatMin) 
      print ratio, urcrnrlonMax, llcrnrlonMin, urcrnrlatMax, llcrnrlatMin 
      if ratio > 1: 
       urcrnrlatMax = urcrnrlatMax * (1 + (ratio - 1)/2) 
       if urcrnrlatMax > 70: urcrnrlatMax = 70 
       if urcrnrlatMax < -70: urcrnrlatMax = -70 
       llcrnrlatMin = llcrnrlatMin * (1 - (ratio - 1)/2) 
       if llcrnrlatMin > 70: llcrnrlatMin = 70 
       if llcrnrlatMin < -70: llcrnrlatMin = -70 
      else: 
       urcrnrlonMax = urcrnrlonMax * (1 + (ratio - 1)/2) 
       if urcrnrlonMax > 180: urcrnrlonMax = 179 
       if urcrnrlonMax < -180: urcrnrlonMax = -179 
       llcrnrlonMin = llcrnrlonMin * (1 - (ratio - 1)/2) 
       if llcrnrlonMin > 180: llcrnrlonMin = 179 
       if llcrnrlonMin < -180: llcrnrlonMin = -179 
     else: 
      llcrnrlatMin = 30 
      urcrnrlatMax = 65 
      llcrnrlonMin = -20 
      urcrnrlonMax = 40  

     print urcrnrlonMax, llcrnrlonMin, urcrnrlatMax, llcrnrlatMin 
     self.m = Basemap(projection='merc', llcrnrlat=llcrnrlatMin, urcrnrlat=urcrnrlatMax, \ 
        llcrnrlon=llcrnrlonMin, urcrnrlon=urcrnrlonMax, resolution='i', ax=self.ax)   

     self.m.drawcoastlines() 
     self.m.drawcountries() 
     self.m.drawstates() 
     self.m.fillcontinents(color='coral', lake_color='aqua') 

     if len(cities) > 0: 
      x,y = self.m(lons, lats) 
      print x, y 

      self.m.plot(x, y, 'bo', picker = True) 
      # plot the names of those five cities. 
      for name, xpt, ypt in zip(cities,x,y): 
       self.ax.text(xpt+5000,ypt+5000,name)    

     self.m.drawmapboundary(fill_color='aqua') 
     self.updatesEnabled() 

    def resizeEvent(self, event): 
     print "resize"  
     #self.update() 
     #self.canvas.update() 
     frame.environmentGeneral_tab.setBackgroundRole(QPalette.Window) 
     self.setBackgroundRole(QPalette.Window) 
     self.update() 

Answer 1

は、以下の例をみてください。私はそれがあなたが探していたことをすると思います。

from PyQt4.QtCore import * 
from PyQt4.QtGui import * 

import sys 

from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas 
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar 
from matplotlib.figure import Figure 

import numpy as np 
from mpl_toolkits.basemap import Basemap 
from datetime import datetime 


class WorldMap(QDialog): 
    def __init__(self, parent = None, flags=Qt.Window):   
     super(WorldMap, self).__init__(parent, flags) 

     self.resize(800, 600) 
     self.gridLayout = QGridLayout(self) 

     self.gridLayout.setObjectName("gridLayout") 
     self.widgetPlot = QWidget() 
     self.widgetPlot.setObjectName("widgetPlot")   
     self.figure = Figure()   
     self.axes = self.figure.add_subplot(111) 
     self.canvas = FigureCanvas(self.figure) 
     layout = QVBoxLayout() 
     self.widgetPlot.setLayout(layout) 
     layout.addWidget(self.canvas)   
     self.gridLayout.addWidget(self.widgetPlot, 0, 0, 1, 1) 
     self.mpl_toolbar = NavigationToolbar(self.canvas, self, coordinates = False) 
     self.gridLayout.addWidget(self.mpl_toolbar, 1, 0, 1, 1)   

     map = Basemap(projection='mill',lon_0=0, ax= self.axes) 
     map.drawcoastlines() 
     map.drawparallels(np.arange(-90,90,30),labels=[1,0,0,0]) 
     map.drawmeridians(np.arange(map.lonmin,map.lonmax+30,60),labels=[0,0,0,1]) 
     map.drawmapboundary(fill_color='aqua') 
     map.fillcontinents(color='coral',lake_color='aqua') 
     date = datetime.utcnow() 
     CS=map.nightshade(date) 
     self.canvas.draw() 

def main(): 
    app = QApplication(sys.argv)  
    dialog = WorldMap(None)  
    sys.exit(dialog.exec_()) 

if __name__ == "__main__":  
    main()