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使用 tikzplotlib 保存的带有图例的绘图在乳胶中产生错误

tag-icon • tag-icon tikz-pgf matplotlib
使用 tikzplotlib 保存的带有图例的绘图在乳胶中产生错误

我正在使用 matplotlib 生成一个图，并使用 tikzplotlib 保存它，以便稍后在 latex 中使用。在我使用图例之前，它运行良好。然后 latex 给我以下错误消息：“包 PGF 数学错误：未知函数“None”（在“None”中）。 \end{axis}“

问题显然出在生成的 .tex 文件中的以下行：\addlegendentry

虽然图会显示出来，但我想摆脱错误消息。此外，图例中的字体大小看起来不像应该的那样小！

梅威瑟：

Python代码：

import pandas as pd 
import numpy as np
import calendar
from calendar import isleap
from datetime import datetime
import matplotlib 
import matplotlib.pyplot as plt
from my_plot import defSize
import tikzplotlib

t1 = (1,1,1,1)
y1 = (1.1,1.5,2.2,3)
t2 = (2,2,2,2)
y2 = (2.2,2.4,2.5,3)

plt.style.use('seaborn-whitegrid')
plt.figure()
# Plot
plt.title('Calculated Interest Rates for Options expiring on')
plt.xlabel('Time to Maturity in Days')
plt.ylabel('Interest Rates')
plt.xlim(0, 3)
plt.scatter(t1, y1, facecolors='none', edgecolors='k', label = 'OIR with 1 Day of Expiration')
plt.scatter(t2, y2, marker = 's', facecolors='none', edgecolors='r', label = 'OIR with 2 Day of Expiration')
plt.legend(loc="upper right", fontsize=7)
plt.savefig(r'yourDIERECTORY.png')
tikzplotlib.save(r'yourDIRECTORY.tex', axis_width='383.69687',  axis_height='250')

乳胶代码：

\documentclass[]{article}
\usepackage[utf8]{inputenc}
\usepackage{pgfplots}
\usepackage{tikz}
\usepgfplotslibrary{groupplots,dateplot}
\usetikzlibrary{patterns,shapes.arrows}
\pgfplotsset{compat=newest}
%opening
\title{Problem}
\begin{document}
\maketitle
Here is the problem
\begin{figure}
   \centering
   \label{plot1}
   \input{plot1.tex}
   \caption{\textbf{xxx}. \protect\\ The figure xxx}
\end{figure}
\end{document}

来自 plot1.tex 的代码

% This file was created by tikzplotlib v0.9.2.
\begin{tikzpicture}

\begin{axis}[
axis line style={white!80!black},
height=250,
legend cell align={left},
legend style={fill opacity=None, draw opacity=1, text opacity=1, draw=none},
tick align=outside,
tick pos=both,
title={Calculated Interest Rates for Options expiring on},
width=383.69687,
x grid style={white!80!black},
xlabel={Time to Maturity in Days},
xmajorgrids,
xmin=0, xmax=3,
xtick style={color=white!15!black},
y grid style={white!80!black},
ylabel={Interest Rates},
ymajorgrids,
ymin=0.5, ymax=3.5,
ytick style={color=white!15!black}
]
\addplot [only marks, mark=o, draw=black, colormap/blackwhite]
table{%
x                      y
1 1.1
1 1.5
1 2.2
1 3
};
\addlegendentry{OIR with 1 Day of Expiration}
\addplot [only marks, mark=square, draw=red, colormap/blackwhite]
table{%
x                      y
2 2.2
2 2.4
2 2.5
2 3
};
\addlegendentry{OIR with 2 Day of Expiration}
\end{axis}

\end{tikzpicture}

答案1

错误来自

legend style={fill opacity=None, draw opacity=1, text opacity=1, draw=none},

特别是fill opacity=None。如果你删除该fill opacity设置，或者将其更改None为从 0 到 1 的某个数字，它应该可以工作。

当我运行你的 Python 代码时，我发现了fill opacity=0.8其他一些差异：

8c8
< legend style={fill opacity=0.8, draw opacity=1, text opacity=1, draw=none},
---
> legend style={fill opacity=None, draw opacity=1, text opacity=1, draw=none},
10c10
< tick pos=left,
---
> tick pos=both,
21c21
< ymin=0.99562181122449, ymax=3.11337053571429,
---
> ymin=0.5, ymax=3.5,

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