Python Bokeh – 在图上绘制四边形

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四边形。可以使用plotting模块的quad()方法在图形上绘制四边形。

plotting.figure.quad()

Syntax : quad(parameters)

Parameters :

left : x-coordinates of the left edges of the quadrilateral
right : x-coordinates of the right edges of the quadrilateral
top : y-coordinates of top the edges of the quadrilateral
bottom : y-coordinates bottom of the edges of the quadrilateral

Returns : an object of class GlyphRenderer

编程需要懂一点英语

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 Quadrilateral Graph",
               match_aspect = True)
      
# the points to be plotted
top = 3
bottom = 1
left = 0
right = 4
     
# plotting the graph
graph.quad(left,
           right,
           top,
           bottom)
      
# displaying the model
show(graph)

输出：

示例 2：在此示例中，我们将绘制具有各种其他参数的多个四边形

# 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 Quadrilateral Graph") 
  
# name of the x-axis 
graph.xaxis.axis_label = "x-axis"
       
# name of the y-axis 
graph.yaxis.axis_label = "y-axis"
  
# points to be plotted
left = [2, 3, 6]
right = [1, 5, 0]
top = [3, 6, 6]
bottom = [1, 5, 2] 
  
# color value of the patch
color = ["yellow", "red", "blue"]
  
# fill alpha value of the patch
fill_alpha = [0.9, 0.7, 0.5]
  
# plotting the graph 
graph.quad(left,
           right,
           top,
           bottom,
           color = color,
           fill_alpha = fill_alpha) 
       
# displaying the model 
show(graph)

输出：

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