凡例のテキストにmatplotlibスキャッタマーカをラテックスと共に使用する

Question

私はインセットを持つプロットを持っています。後者には伝説があり、そのテキストではmatplotlibスキャッタマーカを使用したいと考えています。私はまた、LaTeXをすべてのラベルと凡例に同時に使用できるようにしたいと考えています。私がこれを言及している理由は、this threadを見てそこの解決策が私には役に立たないからです。私はなぜ蛇を説明します。私は乳液についてhereにアドバイスして行くと

で試すことになっている場合はここ

は、サンプルコード（私はプロットしています機能のために申し訳ありませんが、何も考えることができませんでした）

# -*- coding: utf-8 -*- 
import numpy as np 
import matplotlib.pyplot as plt 
from mpl_toolkits.axes_grid.inset_locator import (inset_axes, InsetPosition, mark_inset) 
from matplotlib import rc 
rc('text', usetex=True) 

N = 50 
x = np.random.rand(N) 
y = np.random.rand(N) 

fig, ax1 = plt.subplots() 

ax1.scatter(x, np.cos(x), color = 'blue', marker = "D", s=47.5, label = r'$\cos$') 
ax1.scatter(y, np.sin(y), color = 'cyan', marker = "*", alpha = 0.85, label = r'$\sin$') 
ax1box = ax1.get_position() 
x_value = -0.13 
y_value = 0.675 
legend=ax1.legend(loc = (ax1box.x0 + x_value, ax1box.y0 + y_value), handletextpad=0.1, prop={'size':8}) 
frame = legend.get_frame() 
frame.set_alpha(0) 
frame.set_linewidth(0) 

ax2 = plt.axes([0.5,0.5,0.5,0.5]) 
ip = InsetPosition(ax1, [0.55,0,0.45,0.40]) 
ax2.set_axes_locator(ip) 
ax2.scatter(x, np.tan(x), color = 'gray', marker = "v", s=15, label = r'Insert blue square marker here') 
ax2.scatter(y, np.log(y)+1, color = 'brown', marker = "4", s=15, label = r'Insert cyan star marker here') 
ax2.xaxis.tick_top() 
ax2.xaxis.set_label_position('top') 
ax2.yaxis.tick_right() 
legend2=ax2.legend(loc = 'lower right', handletextpad=0.1, prop={'size':7}) 
frame2 = legend2.get_frame() 
frame2.set_alpha(0) 
frame2.set_linewidth(0) 

plt.show() 

です

ax2.scatter(x, np.tan(x), color = 'gray', marker = "v", s=15, label = r'$\square$') 

プロットは、括弧内に凡例がない場合を示します。

、代わりに、私は

ax2.scatter(x, np.tan(x), color = 'gray', marker = "v", s=15, label = '●') 

は私がいるかのように、LaTeXのを使用していたという事実から来ているようだ次のエラー

Exception in Tkinter callback 
Traceback (most recent call last): 
    File "/usr/lib/python3.5/tkinter/__init__.py", line 1562, in __call__ 
    return self.func(*args) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py", line 280, in resize 
    self.show() 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py", line 351, in draw 
    FigureCanvasAgg.draw(self) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_agg.py", line 464, in draw 
    self.figure.draw(self.renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py", line 63, in draw_wrapper 
    draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/figure.py", line 1144, in draw 
    renderer, self, dsu, self.suppressComposite) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/image.py", line 139, in _draw_list_compositing_images 
    a.draw(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py", line 63, in draw_wrapper 
    draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/axes/_base.py", line 2426, in draw 
    mimage._draw_list_compositing_images(renderer, self, dsu) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/image.py", line 139, in _draw_list_compositing_images 
    a.draw(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/artist.py", line 63, in draw_wrapper 
    draw(artist, renderer, *args, **kwargs) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/legend.py", line 471, in draw 
    bbox = self._legend_box.get_window_extent(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 269, in get_window_extent 
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 391, in get_extent_offsets 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 391, in <listcomp> 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 262, in get_extent 
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 462, in get_extent_offsets 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 462, in <listcomp> 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 262, in get_extent 
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 391, in get_extent_offsets 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 391, in <listcomp> 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 262, in get_extent 
    w, h, xd, yd, offsets = self.get_extent_offsets(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 462, in get_extent_offsets 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 462, in <listcomp> 
    for c in self.get_visible_children()] 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/offsetbox.py", line 835, in get_extent 
    bbox, info, d = self._text._get_layout(renderer) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/text.py", line 362, in _get_layout 
    ismath=ismath) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_agg.py", line 230, in get_text_width_height_descent 
    renderer=self) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/texmanager.py", line 676, in get_text_width_height_descent 
    dvifile = self.make_dvi(tex, fontsize) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/texmanager.py", line 399, in make_dvi 
    texfile = self.make_tex(tex, fontsize) 
    File "/usr/local/lib/python3.5/dist-packages/matplotlib/texmanager.py", line 314, in make_tex 
    fh.write(s.encode('ascii')) 
UnicodeEncodeError: 'ascii' codec can't encode character '\u25cf' in position 226: ordinal not in range(128) 

に取得Unicodeソリューションを実装する場合Iコメントアウト

# from matplotlib import rc 
# rc('text', usetex=True) 

その後、私はすべてが動作しますが、LaTeXはありません。 （私が得るサークルは黒で、まだ色を変えることが可能かどうかは調べていません）。しかし、私はLaTeXが欲しいと思うので、これは私には良いことではありません。

Answer 1

The Great, Big List of LaTeX Symbolsが示す通り、\squareはAMSシンボルです。だから、それを使用するために、あなたは、私はまだかなり長いですエラーを取得

rc('text', usetex=True) 
rc('text.latex', preamble=r'\usepackage{amssymb}')