Matplotlib：Gridspec 或 plt.subplot2grid 的 OOP 等价物是什么

Question

要在可以具有 colspans 和 rowspans 的表中排列子图，Matplotlib 的 Pyplot-API 使用：

http://matplotlib.org/users/gridspec.html

在这个问题中，用户 tcaswell 说不应该将两者混为一谈 API：

On handling the layout of subfigures

考虑到这个建议，如何在不使用 Pyplot-API 的情况下执行 colspans 和 rowspans？

编辑 1

我认为用一个有效的例子来扩展这个问题可能会很好。我实施了用户 Julien 在他的回答中推荐的内容并且一切正常：

#!/usr/bin/python3

from gi.repository import Gtk
from matplotlib.backends.backend_gtk3cairo import (FigureCanvasGTK3Cairo
    as FigureCanvas)
from matplotlib.backends.backend_gtk3 import (NavigationToolbar2GTK3 
    as NavigationToolbar)
import mplstereonet
from matplotlib.gridspec import GridSpec
from matplotlib.figure import Figure

class MyWindow(Gtk.Window):
    def __init__(self):
        Gtk.Window.__init__(self)
        self.set_size_request(500, 500)
        self.box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=6)
        self.add(self.box)

        self.fig = Figure(dpi = 80)
        gridspec = GridSpec(3, 3)

        subplot_one = gridspec.new_subplotspec((0, 0),
                                            rowspan = 1, colspan = 3)
        subplot_two = gridspec.new_subplotspec((1, 0), rowspan = 2,
                                            colspan = 1)
        subplot_three = gridspec.new_subplotspec((1, 1), rowspan = 2,
                                            colspan = 2)

        ax_one = self.fig.add_subplot(subplot_one)
        ax_two = self.fig.add_subplot(subplot_two)
        ax_three = self.fig.add_subplot(subplot_three)

        xdata = [0.5, 0.2, 0.7, 0.3]
        ydata = [0.2, 0.8, 0.2, 0.4]

        ax_one.scatter(xdata, ydata)
        ax_two.scatter(xdata, ydata)
        ax_three.scatter(xdata, ydata)

        self.canvas = FigureCanvas(self.fig)
        self.box.pack_start(self.canvas, True, True, 0)

win = MyWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()

Answer 1

部分答案在 pyplot.subplot2grid 文档中：

http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.subplot2grid

假设你已经定义了一个数字fig

from matplotlib.gridspec import GridSpec
gridspec = GridSpec(nrows, ncols)
subplotspec = gridspec.new_subplotspec((row, col), rowspan, colspan)
ax = fig.add_subplot(subplotspec)

Matplotlib：Gridspec 或 plt.subplot2grid 的 OOP 等价物是什么

Matplotlib: What is the OOP equivalent of Gridspec or plt.subplot2grid

matplotlib

编辑 1