将字体更改为avant Matplotlib

我正在尝试实施matplotlib图的保管程序，以便使用乳胶作品。有关更多参考信息，请查看以下链接：

目标是将字体族更改为avant，以便与完整报告的字体匹配。以下是所选先锋字体的快照：

下面的代码显示了我的尝试。我实现了以下代码：

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import matplotlib

from math import sqrt
SPINE_COLOR = 'gray'

def latexify(fig_width=None, fig_height=None, columns=1):
    """Set up matplotlib's RC params for LaTeX plotting.
    Call this before plotting a figure.

    Parameters
    ----------
    fig_width : float, optional, inches
    fig_height : float,  optional, inches
    columns : {1, 2}
    """

    # code adapted from http://www.scipy.org/Cookbook/Matplotlib/LaTeX_Examples

    # Width and max height in inches for IEEE journals taken from
    # computer.org/cms/Computer.org/Journal%20templates/transactions_art_guide.pdf

    assert(columns in [1,2])

    if fig_width is None:
        fig_width = 3.39 if columns==1 else 6.9 # width in inches

    if fig_height is None:
        golden_mean = (sqrt(5)-1.0)/2.0    # Aesthetic ratio
        fig_height = fig_width*golden_mean # height in inches

    MAX_HEIGHT_INCHES = 8.0
    if fig_height > MAX_HEIGHT_INCHES:
        print("WARNING: fig_height too large:" + fig_height +
              "so will reduce to" + MAX_HEIGHT_INCHES + "inches.")
        fig_height = MAX_HEIGHT_INCHES

    params = {'backend': 'ps',
              'text.latex.preamble':[r'\usepackage{gensymb}', r'\usepackage{avant}'],
              'axes.labelsize': 8, # fontsize for x and y labels (was 10)
              'axes.titlesize': 8,
              'font.size': 8, # was 10
              'legend.fontsize': 8, # was 10
              'xtick.labelsize': 8,
              'ytick.labelsize': 8,
              'text.usetex': True,
              'figure.figsize': [fig_width,fig_height],
              'font.family': 'avant'
    }

    matplotlib.rcParams.update(params)

def format_axes(ax):

    for spine in ['top', 'right']:
        ax.spines[spine].set_visible(False)

    for spine in ['left', 'bottom']:
        ax.spines[spine].set_color(SPINE_COLOR)
        ax.spines[spine].set_linewidth(0.5)

    ax.xaxis.set_ticks_position('bottom')
    ax.yaxis.set_ticks_position('left')

    for axis in [ax.xaxis, ax.yaxis]:
        axis.set_tick_params(direction='out', color=SPINE_COLOR)

    return ax

df = pd.DataFrame(np.random.randn(10,2))
df.columns = ['Column 1', 'Column 2']



ax = df.plot()
ax.set_xlabel("X label")
ax.set_ylabel("Y label")
ax.set_title("Title")
plt.tight_layout()
plt.savefig("image1.pdf")


latexify()

ax = df.plot()
ax.set_xlabel("X label")
ax.set_ylabel("Y label")
ax.set_title("Title")
plt.tight_layout()
format_axes(ax)
plt.savefig("image2.pdf")

问题是它似乎无法识别前卫字体。这是我收到的错误：

findfont: Font family ['avant'] not found. Falling back to DejaVu Sans.

---

是否有人知道如何调整代码以获得所需的字体系列（avant）？

您可以忽略findfont警告。它表示在您的系统上找不到字体

avant

。但是，由于使用latex进行文本渲染，matplotlib找不到字体这一事实与此无关

重要的一点是告诉matplotlib使用无衬线字体（因为前卫字体中只有无衬线字体）。同样对于标签或其他数学模式，您需要告诉它也使用无衬线

from matplotlib import pyplot as plt

plt.rcParams.update({"text.usetex" : True,
                     'font.family' : 'sans-serif',
                     "text.latex.preamble" : r"\usepackage{avant} \usepackage{sansmath} \sansmath"})

x = ["Apples", "Bananas", "Cherry", "Dosenfrüchte"]
y = [400,500,300,100]

plt.bar(x,y, width=0.5, label="Fruits")
plt.legend()
plt.title("A juicy diagram")

plt.show()

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