散景中的无限水平线 [英] Infinite horizontal line in Bokeh

问题描述

有没有办法用Bokeh画一条无限的水平线? 无论用户缩放到多远，该线的端点都永远不可见.

Is there a way to plot an infinite horizontal line with Bokeh? The endpoints of the line should never become visible, no matter how far out the user is zooming.

这是我到目前为止尝试过的.它只是打印一个空的画布:

This is what I've tried so far. It just prints an empty canvas:

import bokeh.plotting as bk
import numpy as np

p = bk.figure()
p.line([-np.inf,np.inf], [0,0], legend="y(x) = 0")
bk.show(p)

一种方法是将端点设置为极高/极低，并且图形的x_range和y_range相对于它们极小.

One way would be to set the endpoints extremely high/low and the figure's x_range and y_range very small in relation to them.

import bokeh.plotting as bk
import numpy as np

p = bk.figure(x_range=[-10,10])
p.line([-np.iinfo(np.int64).max, np.iinfo(np.int64).max], [0,0], legend="y(x) = 0")
bk.show(p)

但是，我希望有人能有一个更优雅的解决方案.

However, I am hoping that somebody has a more elegant solution.

删除过时的解决方案

推荐答案

您正在寻找跨度":

跨度(线型注释)具有一个维度(宽度或高度)，并延伸到绘图区域的边缘.

Spans (line-type annotations) have a single dimension (width or height) and extend to the edge of the plot area.

请看看 http://docs.bokeh.org/en/latest/docs /user_guide/annotations.html#spans

因此，代码将如下所示:

So, the code will look like:

import numpy as np
import bokeh.plotting as bk
from bokeh.models import Span

p = bk.figure()

# Vertical line
vline = Span(location=0, dimension='height', line_color='red', line_width=3)
# Horizontal line
hline = Span(location=0, dimension='width', line_color='green', line_width=3)

p.renderers.extend([vline, hline])
bk.show(p)

使用此解决方案，用户可以随意平移和缩放.行的结尾将永远不会显示.

With this solution users are allowed to pan and zoom at will. The end of the lines will never show up.

这篇关于散景中的无限水平线的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！