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Python Matplotlib.patches.ArrowStyle用法及代碼示例

Matplotlib是Python中令人驚歎的可視化庫，用於數組的二維圖。 Matplotlib是一個基於NumPy數組的多平台數據可視化庫，旨在與更廣泛的SciPy堆棧配合使用。

matplotlib.patches.ArrowStyle

這個matplotlib.patches.ArrowStyleclass是一個容器類，它定義了許多arrowstyle類，這些類用於沿提供的路徑創建箭頭路徑。這些主要與FancyArrowpatch一起使用。

用法： class matplotlib.patches.ArrowStyle

以下子類是為各種arrowstyle定義的；

類名稱屬性
Curve--None
CurveB->head_length = 0.4，head_width = 0.2
BracketB-[寬度B = 1.0，長度B = 0.2，角度B =無
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]-寬度A = 1.0，長度A = 0.2，角度A =無
BracketAB]-[widthA = 1.0，lengthA = 0.2，angleA = None，widthB = 1.0，lengthB = 0.2，angleB = None
Fancyfancyhead_length = 0.4，head_width = 0.4，tail_width = 0.4
Simplesimplehead_length = 0.5，head_width = 0.5，tail_width = 0.2
Wedgewedgetail_width = 0.3，shrink_factor = 0.5
BarAB|-|widthA = 1.0，angleA = None，widthB = 1.0，angleB = None


範例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()

輸出：

範例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()

輸出：




相關用法


注：本文由純淨天空篩選整理自RajuKumar19大神的英文原創作品 Matplotlib.patches.ArrowStyle class in Python。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。