<p>可以将形状添加到绘图布局中。形状可以包括直线或矩形。也可以通过相对于打印区域(而不是特定轴)绘制它们,使其无边界。请看一下<a href="https://plot.ly/python/shapes/" rel="nofollow noreferrer">plotly shapes docs</a>中的示例。在</p>
<pre><code>layout = {
'title': "My Chart",
'shapes': [
{ # Unbounded line at x = 4
'type': 'line',
# x-reference is assigned to the x-values
'xref': 'x',
# y-reference is assigned to the plot paper [0,1]
'yref': 'paper',
'x0': 4,
'y0': 0,
'x1': 4,
'y1': 1,
'line': {
'color': 'rgb(55, 128, 191)',
'width': 3,
}
},
{ # Unbounded span at 6 <= x <= 8
'type': 'rect',
# x-reference is assigned to the x-values
'xref': 'x',
# y-reference is assigned to the plot paper [0,1]
'yref': 'paper',
'x0': 6,
'y0': 0,
'x1': 8,
'y1': 1,
'fillcolor': '#d3d3d3',
'opacity': 0.2,
'line': {
'width': 0,
}
}
],
}
</code></pre>