如何避免Matplotlib因Y轴刻度值差异调整坐标轴尺寸？

我正在撰写LaTeX报告（该问题在Word中同样存在），核心困扰是无法阻止Matplotlib在Y轴标签/刻度变化时调整坐标轴（图内框架）的尺寸。这些图片需单独保存（因此无法使用subplots的sharex参数），它们基于时间维度，在报告中放置时要求X轴刻度、标签及数据保持垂直对齐。但Y轴范围变化时，Matplotlib为容纳负号或不同量级的刻度值，会缩小坐标轴框架尺寸，导致对齐失效。我使用自定义mplstyle脚本，尝试过调整bbox（tight与standard）、子图参数、Y轴标签对齐方式，以及figure.autolayout和figure.constrained_layout选项，但问题仍未解决。

示例代码 #

import matplotlib.pyplot as plt

plt.style.use("personal_repo.styles.mdpi")


fig, ax = plt.subplots()
ax.plot(
    [0, 1, 2, 3, 4],
    [0, 1, 4, 9, 16],
)
fig.savefig("example1.png")

fig, ax = plt.subplots()
ax.plot(
    [0, 1, 2, 3, 4],
    [-4, -2, 0, 2, 4],
)
fig.savefig("example2.png")

自定义mplstyle配置 #

lines.linewidth: 0.5               # line width in points
font.family: serif
font.serif: "Palatino Linotype"
font.size:    8.0
text.usetex: True  # use latex for all text handling. The following fonts
axes.linewidth: 1    # edge line width
axes.titlesize: 8.0   # font size of the axes title
axes.titlepad:      8.0     # pad between axes and title in points
axes.labelsize: 8.0  # font size of the x and y labels
                                   # according to the user's locale.
                                   # For example, use ',' as a decimal
                                   # separator in the fr_FR locale.
axes.formatter.use_mathtext: True  # When True, use mathtext for scientific
                                     # notation.

axes.prop_cycle : (cycler('color', ['k', 'r', 'b', 'g']) + cycler('ls', ['-', '--', ':', '-.']))
axes.xmargin:   .05  # x margin.  See `axes.Axes.margins`
axes.ymargin:   .05  # y margin.  See `axes.Axes.margins`
axes.zmargin:   .05  # z margin.  See `axes.Axes.margins`
axes.autolimit_mode: "round_numbers" #round_numbers  # If "data", use axes.xmargin and axes.                                          
xtick.top: True
xtick.bottom: True
xtick.major.size: 4.0
xtick.minor.size: 2.0
xtick.major.width: 1
xtick.minor.width: 1
xtick.direction: out
xtick.minor.visible: True
xtick.major.top: True
xtick.major.bottom: True
xtick.minor.top: True
xtick.minor.bottom: True
xtick.major.pad: 5.0
xtick.minor.pad: 5.0
ytick.labelsize:medium
ytick.left: True
ytick.right: True
ytick.major.size: 4.0
ytick.minor.size: 2.0
ytick.major.width: 1
ytick.minor.width: 1
ytick.direction: out
ytick.minor.visible: True
ytick.major.left: True
ytick.major.right: True
ytick.minor.left: True
ytick.minor.right: True
ytick.major.pad: 5.0
ytick.minor.pad: 5.0
xtick.labelsize:medium
grid.color: black #"#b0b0b0"  # grid color
grid.alpha:     0.1        # transparency, between 0.0 and 1.0
legend.loc:           best
legend.frameon:       True     # if True, draw the legend on a background patch
legend.framealpha:    1      # legend patch transparency
legend.edgecolor:     0     # background patch boundary color
legend.fancybox:      False     # if True, use a rounded box for the
legend.markerscale:   0.25      # the relative size of legend markers vs. original
legend.fontsize: medium
legend.handlelength:  1  # the length of the legend lines
legend.handletextpad: 0.5  # the space between the legend line and legend text
legend.columnspacing: .75  # column separation
figure.figsize: 5.6, 1.7305315203955498  # figure size in inches
figure.dpi: 300       # figure dots per inch
figure.autolayout: True  # When True, automatically adjust subplot
figure.constrained_layout.use: False  # When True, automatically make plot
savefig.dpi: 300      # figure dots per inch or 'figure'
savefig.bbox: tight    # {tight, standard}

内容的提问来源于stack exchange，提问作者Danky