图CanvasTkAgg中的TkInter Matplotlib底图

Question

我正在尝试将Matplotlib底图添加到TkInter Canvas中。但是，当我尝试绘制一个Python崩溃时，它可以正常工作而不使用底图。代码块＃1是有效的代码，代码块＃2使我的程序崩溃。如果删除＃2中除m=Basemap(...)部分之外的所有内容，它也会崩溃。计算Basemap(...)需要大约6或7秒，我想这就是TkInter崩溃的原因。我有什么想法告诉TkInter等待吗？

1

def plot_route(self, geom1, root):
            root1 = Tk()

            x1, y1 = zip(*((geom1.GetX(i), geom1.GetY(i)) for i in range(geom1.GetPointCount())))
            f = Figure(figsize=(5,4), dpi=100)
            a = f.add_subplot(111)
            a.plot(x1,y1)
            a.set_title('Tk embedding')
            a.set_xlabel('X axis label')
            a.set_ylabel('Y label')

            canvas = FigureCanvasTkAgg(f, master=root1)
            canvas.show()
            canvas.get_tk_widget().pack(side=TOP, fill=BOTH, expand=1)
            canvas._tkcanvas.pack(side=TOP, fill=BOTH, expand=1)

            root1.mainloop()

2：

def plot_route(self, geom1, root):
            root1 = Tk()

            m = Basemap(width=12000000,height=9000000,projection='lcc', resolution='c',lat_1=45.,lat_2=55,lat_0=50,lon_0=-107.)
            m.drawcoastlines()
            m.drawmapboundary(fill_color='aqua')
            m.fillcontinents(color='coral',lake_color='aqua')

            canvas = FigureCanvasTkAgg(m, master=root1)
            canvas.show()
            canvas.get_tk_widget().pack(side=TOP, fill=BOTH, expand=1)
            canvas._tkcanvas.pack(side=TOP, fill=BOTH, expand=1)

            root1.mainloop()

Answer 1

  

canvas = FigureCanvasTkAgg（m，master = root1）

我认为你不应该在这里使用'm'。

你应该创建一个图形，并添加一个子图（ax），并将该ax传递给底图。

并使用fig作为FigureCanvasTkAgg的参数。

import matplotlib
matplotlib.use('TkAgg')
from mpl_toolkits.basemap import Basemap
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg

import sys
if sys.version_info[0] < 3:
    import Tkinter as Tk
else:
    import tkinter as Tk

root = Tk.Tk()
fig = Figure()  ## here
ax1 = fig.add_subplot(111)  ## here

m = Basemap(width=12000000,height=9000000,projection='lcc', 
            resolution='c',lat_1=45.,lat_2=55,lat_0=50,lon_0=-107.,
            ax=ax1) ## here
m.drawcoastlines()
m.drawmapboundary(fill_color='aqua')
m.fillcontinents(color='coral',lake_color='aqua')

canvas = FigureCanvasTkAgg(fig, master=root)  ## here
canvas.show()
canvas.get_tk_widget().pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)
canvas._tkcanvas.pack(side=Tk.TOP, fill=Tk.BOTH, expand=1)

root.mainloop()