Python Bokeh – 在图形上绘制椭圆

Bokeh 是一个Python交互式数据可视化。它使用 HTML 和 JavaScript 渲染其绘图。它针对现代 Web 浏览器进行演示，提供具有高性能交互性的新颖图形的优雅、简洁构造。

Bokeh 可用于在图形上绘制椭圆。可以使用plotting模块的ellipse()方法在图形上绘制椭圆。

plotting.figure.ellipse()

Syntax : ellipse(parameters)

Parameters :

• x : x-coordinates of the center of the ellipse
• y : y-coordinates of the center of the ellipse
• width : width of each ellipse
• height : height of each ellipse
• angle : angle of rotation of the ellipse, default is 0
• angle_units : unit of the angle, default is rad
• fill_alpha : fill alpha value of the ellipse
• fill_color : fill color value of the ellipse
• height_units : unit of the height, default isdata
• line_alpha : percentage value of line alpha, default is 1
• line_cap : value of line cap for the line, default is butt
• line_color : color of the line, default is black
• line_dash : value of line dash such as :
  • solid
  • dashed
  • dotted
  • dotdash
  • dashdot

  default is solid

• line_dash_offset : value of line dash offset, default is 0
• line_join : value of line join, default in bevel
• line_width : value of the width of the line, default is 1
• name : user-supplied name for the model
• tags : user-supplied values for the model

Other Parameters :

• alpha : sets all alpha keyword arguments at once
• color : sets all color keyword arguments at once
• legend_field : name of a column in the data source that should be used
• legend_group : name of a column in the data source that should be used
• legend_label : labels the legend entry
• muted : determines whether the glyph should be rendered as muted or not, default is False
• name : optional user-supplied name to attach to the renderer
• source : user-supplied data source
• view : view for filtering the data source
• visible : determines whether the glyph should be rendered or not, default is True
• x_range_name : name of an extra range to use for mapping x-coordinates
• y_range_name : name of an extra range to use for mapping y-coordinates
• level : specifies the render level order for this glyph

Returns : an object of class GlyphRenderer

示例 1：在此示例中，我们将使用默认值来绘制图形。

# importing the modules
from bokeh.plotting import figure, output_file, show
      
# file to save the model
output_file("gfg.html")
      
# instantiating the figure object
graph = figure(title = "Bokeh Ellipse Graph",
               match_aspect = True)
    
# the points to be plotted
x = 0
y = 0
  
# width of the ellipse
width = 60
  
# height of the ellipse
height = 20
  
# plotting the graph
graph.ellipse(x, y,
              width = width,
              height = height)
   
# displaying the model
show(graph)

输出 ：

示例 2：在此示例中，我们将绘制具有不同参数的多个椭圆。

# importing the modules
from bokeh.plotting import figure, output_file, show
      
# file to save the model
output_file("gfg.html")
      
# instantiating the figure object
graph = figure(title = "Bokeh Ellipse Graph")
  
# name of the x-axis
graph.xaxis.axis_label = "x-axis"
     
# name of the y-axis
graph.yaxis.axis_label = "y-axis"
    
# the points to be plotted
x = [0, 30, 0]
y = [0, 30, -30]
  
# width of the ellipse
width = [60, 20, 40]
  
# height of the ellipse
height = [20, 180, 80]
  
# angle of the ellipse
angle = [0, 150, 20]
  
# fill alpha values
fill_alpha = 0.3
  
# fill color values
fill_color = ["red", "yellow", "blue"]
  
# line color value
line_color = "black"
  
# plotting the graph
graph.ellipse(x, y,
              width = width,
              height = height,
              angle = angle,
              fill_alpha = fill_alpha,
              fill_color = fill_color,
              line_color = line_color)
   
# displaying the model
show(graph)

输出 ：

在评论中写代码？请使用 ide.geeksforgeeks.org，生成链接并在此处分享链接。