在移动刺之后有效地缓存和恢复matplotlib轴参数

时间:2014-02-04 01:24:55

标签: python matplotlib

我的问题

在抵消棘刺后,我无法保持应用于matplotlib Axes对象的格式和修改。

一个例子

考虑以下简化的工作流程:

%matplotlib inline
import matplotlib.pyplot as plt

def funky_formatting(ax):
    ax.set_xticks([0.1, 0.2, 0.5, 0.7, 0.9])
    ax.set_xticklabels(list('abcde'), rotation=60)

    ax.set_xticks([0.4, 0.6, 0.8], minor=True)
    ax.set_xticklabels(list('xzy'), rotation=-60, minor=True)

    ax.set_yticks([0.2, 0.5, 0.7, 0.8])
    ax.set_yticklabels(list('ABCD'), rotation=35)

    ax.tick_params(axis='both', labelsize=18, labelcolor='r')
    ax.set_ylabel('r$y_{\mathrm{ii}}$ test', color='b', fontweight='extra bold', fontsize=20)
    ax.set_xlabel('r$y_{\mathrm{ii}}$ test', color='r', fontweight='light', fontsize=16)

def offset_spines(ax):
    for spine in ax.spines.values():
        spine.set_position(('outward', 10))

# create two axes
fig, axes = plt.subplots(nrows=2)

# format both axes the same way:
for ax in axes:
    funky_formatting(ax)

# offset the spines of only the top subplot
offset_spines(axes[0])

fig.tight_layout()

哪个收益率:

one good, one bad

正如你所看到的,在抵消刺之后,我丢失了我的x / y标签,勾选位置和勾选标签,以及(某些)勾选标签格式。不幸的是,我无法在其余的轴格式化之前偏移棘刺,因为我的目标是创建一个通用函数来处理由其他函数创建的轴,这些函数的轴都格式不同。

到目前为止我尝试了什么

可以手动缓存很多这些属性:

# cache the properties - x-axis
xlabels = [t.get_text() for t in ax.get_xticklabels()]
xlabelrot = ax.get_xticklabels()[0].get_rotation()
xticks = ax.get_xticks()
xlabel = ax.get_xlabel()

# cache the properties - y-axis
ylabels = [t.get_text() for t in ax.get_yticklabels()]
ylabelrot = ax.get_yticklabels()[0].get_rotation()
yticks = ax.get_yticks()
ylabel = ax.get_ylabel()

# offset spines
for spine in ax.spines.values():
    spine.set_position(('outward', offset))


# restore properties - x-axis
ax.set_xticks(xticks)
ax.set_xticklabels(xlabels, rotation=xlabelrot)
ax.set_xlabel(xlabel)

# restore properties - y-axis
ax.set_yticks(yticks)
ax.set_yticklabels(ylabels, rotation=ylabelrot)
ax.set_ylabel(ylabel)

虽然这样做,但它是:

  1. 非常重复
  2. 需要大约两倍的时间才能涵盖使用次要标签的可能性。
  3. 主要问题:

    有没有更有效的方法来实现这一点,而无需手动拾取和恢复2个属性x 2轴x主要+次要刻度+ 2个标签?

1 个答案:

答案 0 :(得分:1)

我修改了你的代码,它现在可以生成相同的刻度。

%matplotlib inline
import matplotlib.pyplot as plt
from matplotlib.artist import ArtistInspector

def funky_formatting(ax):
    ax.set_xticks([0.1, 0.2, 0.5, 0.7, 0.9])
    ax.set_xticklabels(list('abcde'), rotation=60)
    ax.set_yticks([0.2, 0.5, 0.7, 0.8])
    ax.set_yticklabels(list('ABCD'), rotation=35)
    ax.tick_params(axis='both', labelsize=18, labelcolor='r')
    ax.set_ylabel('r$y_{\mathrm{ii}}$ test', color='b', fontweight='extra bold', fontsize=20)
    ax.set_xlabel('r$y_{\mathrm{ii}}$ test', color='r', fontweight='light', fontsize=16)

def try_update(artist, p):
    for k,v in p.iteritems():
        try:
            artist.update({k:v})
        except:
            pass    

def offset_spines(ax):
    for spine in ax.spines.values():
        paxis = spine.axis.properties()
        ptick = [label.properties() for label in spine.axis.get_ticklabels()]
        spine.set_position(('outward', 10))
        try_update(spine.axis, paxis)
        for label, p in zip(spine.axis.get_ticklabels(), ptick):
            p.pop("transform")
            try_update(label, p)

# create two axes
fig, axes = plt.subplots(nrows=2)

# format both axes the same way:
for ax in axes:
    funky_formatting(ax)

# offset the spines of only the top subplot
offset_spines(axes[0])

fig.tight_layout()

这是输出:

enter image description here