本文整理汇总了Python中matplotlib.patches.Ellipse.get_verts方法的典型用法代码示例。如果您正苦于以下问题：Python Ellipse.get_verts方法的具体用法？Python Ellipse.get_verts怎么用？Python Ellipse.get_verts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.patches.Ellipse的用法示例。
在下文中一共展示了Ellipse.get_verts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: error_ellipse
# 需要导入模块: from matplotlib.patches import Ellipse [as 别名]
# 或者: from matplotlib.patches.Ellipse import get_verts [as 别名]
def error_ellipse(self, i, j, nstd=1, space_factor=5.0, clr="b", alpha=0.5, lw=1.5):
"""
return the plot of the error ellipse from the covariance matrix
use ideas from error_ellipse.m from
http://www.mathworks.com/matlabcentral/fileexchange/4705-error-ellipse
( the version used here was taken from an earlier version, it looks to have been updated there to a new version.)
* (i,j) specify the ith and jth parameters to be used and
* nstd specifies the number of standard deviations to plot, the default is 1 sigma.
* space_factor specifies the number that divides the width/height, the result of which is then added as extra space to the figure
"""
def eigsorted(cov):
vals, vecs = np.linalg.eigh(cov)
order = vals.argsort()[::1]
return vals[order], vecs[:, order]
self.marginalize(param_list=[i, j])
vals, vecs = eigsorted(self.marginal_covariance_matrix)
theta = np.degrees(np.arctan2(*vecs[:, 0][::-1]))
# print theta
width, height = 2 * nstd * np.sqrt(vals)
xypos = [self.parameter_values[i], self.parameter_values[j]]
ellip = Ellipse(xy=xypos, width=width, height=height, angle=theta, color=clr, alpha=alpha)
# ellip.set_facecolor("white")
ellip.set_linewidth(lw)
ellip_vertices = ellip.get_verts()
xl = [ellip_vertices[k][0] for k in range(len(ellip_vertices))]
yl = [ellip_vertices[k][1] for k in range(len(ellip_vertices))]
dx = (max(xl) - min(xl)) / space_factor
dy = (max(yl) - min(yl)) / space_factor
xyaxes = [min(xl) - dx, max(xl) + dx, min(yl) - dy, max(yl) + dy]
return ellip, xyaxes