如何在matplotlib中更改双头注释的头大小? [英] How to change the head size of the double head annotate in matplotlib?

问题描述

下图显示了哪个箭头很小的图...

Below figure shows the plot of which arrow head is very small...

我尝试了下面的代码，但没有奏效...它说提高AttributeError('未知属性％s'％k)AttributeError:未知属性头宽" ...

I tried below code, but it didnot work... it said " raise AttributeError('Unknown property %s' % k) AttributeError: Unknown property headwidth"...

xyfrom=[10,620]
xyto=[130,620]
ax.annotate("",xyfrom,xyto,arrowprops=dict(arrowstyle='<->',linewidth = 2,     headwidth=10,color = 'k'
))
ax.text((xyto[0]+xyfrom[0])/2-15,(xyto[1]+xyfrom[1])/2+10,"headwidth is too    small",fontsize=24)

推荐答案

我相信这是因为您需要在字符串中输入arrowstyle参数.试试这个:

I believe it's because you need to give your arrowstyle arguments inside a string. Try this:

 arrowprops=dict(arrowstyle='<->, head_width=10', facecolor='k')

，注意这是一个完整的字符串:

, notice how this is a full string:

 '<->, head_width=10'

在matplotlib中这是一个非常奇怪的选择，我真的不明白为什么应该这样.无论如何，看看是否能解决您的问题.

It's a really strange choice in matplotlib, one I really don't understand why should it be this way. In any case see if solves your problem.

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