是否可以将数据着色器图像添加到一组 matplotlib 子图中?
作为一个具体的例子,
import numpy as np
import pandas as pd
import matplotlib.pylab as plt
import datashader as ds
import datashader.transfer_functions as tf
from datashader.utils import export_image
from functools import partial
background = "white"
export = partial(export_image, background = background, export_path="export")
N = 10000
df = pd.DataFrame(np.random.random((N, 3)), columns = ['x','y', 'z'])
f, ax = plt.subplots(2, 2)
ax_r = ax.ravel()
ax_r[0].scatter(df['x'], df['y'], df['z'].mean())
ax_r[1].hist(df['x'])
ax_r[2].hist(df['y'])
ax_r[3].plot(df['z'])
cvs = ds.Canvas(plot_width=100, plot_height=100)
agg = cvs.points(df, 'x', 'y', ds.mean('z'))
a = export(tf.shade(agg, cmap=['lightblue', 'darkblue'], how='eq_hist'), 'test')
我有一个二乘二的 matplotlib 子图数组,并且想ax_r[0]
用 datashader image 替换上面示例中的 [0,0] 图a
。这可能吗?如果可以,怎么做?
谢谢!