擅长:python、mysql、java
<p>使用<code>hlines</code>:</p>
<pre><code>plt.title("Site Data Availability")
plt.xlabel("Julian Year Dates (YYDDD)")
plt.ylabel("Instrument Sites")
plt.axhline(y="BTK", color='r', linestyle='-', linewidth=10)
plt.hlines(y="BTK", xmin=16000, xmax=17000, color='b', linestyle='-', linewidth=10, zorder=10) #issues with this line
plt.xlim(15000, 20000)
plt.xticks(rotation=90)
plt.show()
</code></pre>
<p>输出:</p>
<p><a href="https://i.stack.imgur.com/u0kbY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/u0kbY.png" alt="enter image description here"/></a></p>
<h3>其中</h3>
<ul>
<li>axhline在轴上添加一条水平线</李>
<li>hline在数据坐标中添加水平线。情节
从xmin到xmax的每个y处的水平线</李>
</ul>