Python Matplotlib.patches.ArrowStyle用法及代码示例

Matplotlib是Python中令人惊叹的可视化库，用于数组的二维图。 Matplotlib是一个基于NumPy数组的多平台数据可视化库，旨在与更广泛的SciPy堆栈配合使用。

matplotlib.patches.ArrowStyle

这个matplotlib.patches.ArrowStyleclass是一个容器类，它定义了许多arrowstyle类，这些类用于沿提供的路径创建箭头路径。这些主要与FancyArrowpatch一起使用。

用法： class matplotlib.patches.ArrowStyle

以下子类是为各种arrowstyle定义的；

类	名称	属性
Curve	--	None
CurveB	->	head_length = 0.4，head_width = 0.2
BracketB	-[	宽度B = 1.0，长度B = 0.2，角度B =无
CurveFilledB	-\|>	head_length = 0.4，head_width = 0.2
CurveA	<-	head_length = 0.4，head_width = 0.2
CurveAB	<-\|>	head_length = 0.4，head_width = 0.2
CurveFilledA	<\|-	head_length = 0.4，head_width = 0.2
CurveFilledAB	<\|-\|>	head_length = 0.4，head_width = 0.2
BracketA	]-	宽度A = 1.0，长度A = 0.2，角度A =无
BracketAB	]-[	widthA = 1.0，lengthA = 0.2，angleA = None，widthB = 1.0，lengthB = 0.2，angleB = None
Fancy	fancy	head_length = 0.4，head_width = 0.4，tail_width = 0.4
Simple	simple	head_length = 0.5，head_width = 0.5，tail_width = 0.2
Wedge	wedge	tail_width = 0.3，shrink_factor = 0.5
BarAB	\|-\|	widthA = 1.0，angleA = None，widthB = 1.0，angleB = None

范例1：


import matplotlib.pyplot as plt
from matplotlib.patches import ArrowStyle
  
plt.figure(1, figsize =(9, 9))
  
ArrowStyle("Wedge")
  
ax = plt.subplot(111)
  
ax.annotate("",
            xy =(0.2, 0.2), xycoords ='data',
            xytext =(0.8, 0.8), textcoords ='data',
            arrowprops = dict(arrowstyle ="Wedge",
                            connectionstyle ="arc3"), 
            )
  
plt.show()

输出：

范例2：


import matplotlib.patches as mpatch
import matplotlib.pyplot as plt
  
  
figheight = 8
fig = plt.figure(figsize =(9, figheight), dpi = 80)
fontsize = 0.4 * fig.dpi
  
def make_boxstyles(ax):
    styles = mpatch.BoxStyle.get_styles()
  
    for i, (stylename, styleclass) in enumerate(sorted(styles.items())):
        ax.text(0.5, 
                (float(len(styles)) - 0.5 - i)/len(styles),
                stylename,
                ha ="center",
                size = fontsize,
                transform = ax.transAxes,
                bbox = dict(boxstyle = stylename, 
                            fc ="g", ec ="r"))
  
def make_arrowstyles(ax):
    styles = mpatch.ArrowStyle.get_styles()
  
    ax.set_xlim(0, 4)
    ax.set_ylim(0, figheight)
  
    for i, (stylename, styleclass) in enumerate(sorted(styles.items())):
          
        # /figheight
        y = (float(len(styles)) - 0.25 - i
        p = mpatch.Circle((3.2, y), 0.2, fc ="r")
        ax.add_patch(p)
  
        ax.annotate(stylename, (3.2, y),
                    (2., y),
                      
                    # xycoords ="figure fraction",
                    # textcoords ="figure fraction",
                    ha ="right", va ="center",
                    size = fontsize,
                    arrowprops = dict(arrowstyle = stylename,
                                    patchB = p,
                                    shrinkA = 5,
                                    shrinkB = 5,
                                    fc ="w", ec ="r",
                                    connectionstyle ="arc3, rad =-0.05",
                                    ),
                    bbox = dict(boxstyle ="square", fc ="g"))
  
    ax.xaxis.set_visible(False)
    ax.yaxis.set_visible(False)
  
  
ax1 = fig.add_subplot(121, frameon = False, xticks =[], yticks =[])
make_boxstyles(ax1)
  
ax2 = fig.add_subplot(122, frameon = False, xticks =[], yticks =[])
make_arrowstyles(ax2)
  
  
plt.show()

输出：

相关用法

注：本文由纯净天空筛选整理自RajuKumar19大神的英文原创作品 Matplotlib.patches.ArrowStyle class in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。