如何在Plotly中移除X轴标签的数值，仅保留名称

要移除X轴标签中的数值，只保留名称，只需修改update_xaxes方法里的ticktext参数，直接使用原始的labels列表即可，不用再拼接宽度数值。

修正后的完整代码 #

import numpy as np
import plotly.graph_objects as go

labels = ["Example A","Example B","Example C","Example D","Example E","Example F","Example G","Example H","Example I","Example J","Example K","Example L","Example M","Example N","Example O","Example P","Example Q","Example R","Example S","Example T",]
widths = np.array([7000,5000,4000,4000,3000,2000,2000,2000,2000,1800,1700,1500,1300,1200,1200,1100,1000,1000,1000,1000,])
data = { "5": [20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20],
"4": [20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20],
"3": [20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20],
"2": [20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20],
"1": [20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20],}
fig = go.Figure()
for key in data:
    fig.add_trace(go.Bar(
        name=key,
        y=data[key],
        x=np.cumsum(widths)-widths,
        width=widths,
        customdata=np.transpose([labels]),
        textposition="inside",
        insidetextanchor = "middle",
    ))  # 补上原代码缺失的闭合括号
fig.update_xaxes(
    tickvals=np.cumsum(widths)-widths/2,
    ticktext=labels  # 这里直接使用labels列表，不再拼接数值
)
fig.update_layout(
    barmode="stack",
    uniformtext=dict(mode="hide", minsize=18),
    height = 1000,
    width = 2000,)

fig.show()

关键改动说明 #

原代码中ticktext是通过["%s<br>%d" % (l, w) for l, w in zip(labels, widths)]把标签名称和宽度数值拼接成带换行的文本，现在改成直接用labels，这样X轴刻度就只会显示每个示例的名称，不会附带对应的数值了。另外还补上了原代码中add_trace语句缺失的闭合括号，避免语法错误。

内容的提问来源于stack exchange，提问作者lbro