如何使箭头变薄matplotlib [英] how to make arrow thinner matplotlib

问题描述

我绘制了一个如下的箭头，虽然我认为它有点大.我怎样才能使它更薄更小?谢谢

I plot an arrow as below, whilst I think it's a little bit big. How can I make it thinner and smaller? Thank you

for i in range(len(x)):
    plt.annotate(df.index[i],xy=(x[i],y[i]),xytext=(x[i]+1.31,y[i]-0.55),arrowprops=dict(facecolor='blue', shrink=0.1))

推荐答案

您应该尝试调整 width 参数(来自

You should try adjusting the width parameter (from the docs)

plt.annotate(df.index[i], 
    xy=(x[i],y[i]), xytext=(x[i]+1.31,y[i]-0.55),
    arrowprops=dict(facecolor='blue', shrink=0.1, width=2)
)

我已经调整了您的代码段，以使参数更加明显.另请注意， width 以磅为单位，因此您可能需要尝试一些不同的值.其他值得关注的值是 frac.headwidth 和 shr​​ink (也在文档中)，特别是如果你也想让头部变小！

I've adjusted your snippet to make the parameter more obvious. Note also that width is in points, so you may need to try a few different values out. Other values worth looking at are frac. headwidth and shrink (also in the docs), especially if you want to make the head smaller too!

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