如何使用 Dash 显示我的绘图标题？

Question

我有几个可以用 fig.show() 显示的图表，但是当我尝试使用 Dash 显示它们时，它们的标题消失了。

与 fig.show(): Graph made with fig.show()

使用破折号：Graph made with Dash

我认为我的代码的问题与我初始化 fig 的方式无关，因为如果我将 "Display" 部分下的代码替换为仅 fig.show().

很想知道是否有人对如何让我的图表标题与 Dash 一起工作有任何想法！

import os
import plotly.graph_objects as go

import dash
import dash_core_components as dcc
import dash_html_components as html

import numpy as np
import math

# ---------- Initialize X, Y, Z ----------

def f(x, y):
    return 1/2 * (math.pow(x+y,4)+math.pow(x-y,4))

X = np.arange(-10, 11, 1)
Y = X
Z = np.zeros((21,21))

for i in range(21):
    for j in range(21):
        Z[i][j] = f(X[i], Y[j])

# ---------- Generate graphs ----------

layout = {'title': {'text':'DISPLAY ME!'}}

fig = go.Figure(data=[go.Surface(x = X, y = Y, z = Z)], layout=layout)

# ---------- Display ----------

app = dash.Dash()
app.title = "Steepest Descent"

server = app.server

app.layout = html.Div([
    html.Div(
        children=[dcc.Graph(id='my-graph', figure=fig)]
    )
])

if __name__ == '__main__':
    app.run_server(debug=True, use_reloader=False)

Answer 1

你的代码对我来说工作正常。请查看我使用的破折号库版本：

# Name                    Version                   Build  Channel
dash                      1.11.0             pyh9f0ad1d_0    conda-forge
dash-bootstrap-components 0.9.2              pyh9f0ad1d_0    conda-forge
dash-core-components      1.9.1              pyh9f0ad1d_0    conda-forge
dash-daq                  0.4.0                      py_0    conda-forge
dash-html-components      1.0.3              pyh9f0ad1d_0    conda-forge
dash-renderer             1.4.0              pyh9f0ad1d_0    conda-forge
dash-table                4.6.2              pyh9f0ad1d_0    conda-forge

如何使用 Dash 显示我的绘图标题？

How can I get my plotly graph title to display using Dash?

plotly-dash

plotly-python