本文整理汇总了Python中matplotlib.backends.backend_agg.FigureCanvasAgg.tostring_argb方法的典型用法代码示例。如果您正苦于以下问题：Python FigureCanvasAgg.tostring_argb方法的具体用法？Python FigureCanvasAgg.tostring_argb怎么用？Python FigureCanvasAgg.tostring_argb使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类matplotlib.backends.backend_agg.FigureCanvasAgg的用法示例。
在下文中一共展示了FigureCanvasAgg.tostring_argb方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: figure_to_pixmap
# 需要导入模块: from matplotlib.backends.backend_agg import FigureCanvasAgg [as 别名]
# 或者: from matplotlib.backends.backend_agg.FigureCanvasAgg import tostring_argb [as 别名]
def figure_to_pixmap(figure):
"""Get a pixmap from a headless MPL figure
:param figure: a headless (or any other) matplotlib figure object
:type filename: matplotlib.figure.Figure
:returns: 3D numpy uint8 array of pixel values (the image)
"""
canvas = FigureCanvasAgg(figure)
canvas.draw()
w, h = canvas.get_width_height()
pixmap_string = canvas.tostring_argb()
#line up the channels right
pix_array = np.fromstring(pixmap_string, dtype=np.uint8)
pix_array.shape = (w, h, 4)
# pix_array = pix_array[:, :, ::-1]
swapped_array = np.zeros(pix_array.shape, dtype=np.uint8)
swapped_array[:,:,3] = pix_array[:,:,0]
swapped_array[:,:,0] = pix_array[:,:,1]
swapped_array[:,:,1] = pix_array[:,:,2]
swapped_array[:,:,2] = pix_array[:,:,3]
return swapped_array