matplotlib & pandas

Python/matplotlab/gallery/misc/agg_buffer_to_array.md

@@ -0,0 +1,32 @@
+# Agg缓冲区转换数组
+
+将渲染图形转换为其图像(NumPy数组)表示形式。
+
+![Agg缓冲区转换数组示例](https://matplotlib.org/_images/sphx_glr_agg_buffer_to_array_001.png)
+
+![Agg缓冲区转换数组示例2](https://matplotlib.org/_images/sphx_glr_agg_buffer_to_array_002.png)
+
+```python
+import matplotlib.pyplot as plt
+import numpy as np
+
+# make an agg figure
+fig, ax = plt.subplots()
+ax.plot([1, 2, 3])
+ax.set_title('a simple figure')
+fig.canvas.draw()
+
+# grab the pixel buffer and dump it into a numpy array
+X = np.array(fig.canvas.renderer._renderer)
+
+# now display the array X as an Axes in a new figure
+fig2 = plt.figure()
+ax2 = fig2.add_subplot(111, frameon=False)
+ax2.imshow(X)
+plt.show()
+```
+
+## 下载这个示例
+            
+- [下载python源码: agg_buffer_to_array.py](https://matplotlib.org/_downloads/agg_buffer_to_array.py)
+- [下载Jupyter notebook: agg_buffer_to_array.ipynb](https://matplotlib.org/_downloads/agg_buffer_to_array.ipynb)