Question

我正在使用Flask框架和javascript＆amp;前端的HTML。我想在我的HTML里面绘制3D图（离线，即我不想在情节网站上显示）。当我使用下面的代码时，我松开了我的第三个轴，即我能够在HTML中显示的图形不再是3D，而是2D。有人可以告诉我如何获得3D图形。

我已经经历了剧情的文献，但无法找到解决方案

客户端

<script type="text/javascript">
    var graphs = {{graphJSON | safe}};

        Plotly.plot("section", // the ID of the div, created above
                    graphs.data,
                    graphs.layout || {});

</script>

服务器端

@app.route('/', methods=['POST'])
def my_form_post():

x, y, z = np.random.multivariate_normal(np.array([0,0,0]), np.eye(3), 200).transpose()
trace1 = go.Scatter3d(
    x=x,
    y=y,
    z=z,
    mode='markers',
    marker=dict(
        size=12,
        line=dict(
            color='rgba(217, 217, 217, 0.14)',
            width=0.5
        ),
        opacity=0.8
    )
)

x2, y2, z2 = np.random.multivariate_normal(np.array([0,0,0]), np.eye(3), 200).transpose()
trace2 = go.Scatter3d(
    x=x2,
    y=y2,
    z=z2,
    mode='markers',
    marker=dict(
        color='rgb(127, 127, 127)',
        size=12,
        symbol='circle',
        line=dict(
            color='rgb(204, 204, 204)',
            width=1
        ),
        opacity=0.9
    )
)
data = [trace1, trace2]
layout = go.Layout(
    margin=dict(
        l=0,
        r=0,
        b=0,
        t=0
    )
)
fig = go.Figure(data=data, layout=layout)
graphJSON = json.dumps(fig, cls=plotly.utils.PlotlyJSONEncoder)

return render_template('layout/index.html',
                       graphJSON=graphJSON)

嵌入html文件的代码

<script>
$(function(){ $("#div_id_where_i_want_to_embedd").load("url_of_test.html"); 
});
</script>

Answer 1

这是我将Python图形图转换为HTML文件的方法。首先，使用dicts而不是Plotly图形对象库来构建数字：

import numpy as np
x, y, z = np.random.multivariate_normal(np.array([0,0,0]), np.eye(3), 200).transpose()
trace1 = dict(
    type = 'scatter3d',
    x=x,
    y=y,
    z=z,
    mode='markers',
    marker=dict(
        size=12,
        line=dict(
            color='rgba(217, 217, 217, 0.14)',
            width=0.5
        ),
        opacity=0.8
    )
)
layout = dict(
    margin=dict(
        l=0,
        r=0,
        b=0,
        t=0
    )
)
fig = dict(data = [trace1], layout = layout)

现在，这是我写的一个函数，用于将javascript文件转换为html文件：

import sys
import os
from plotly import session, tools, utils
import uuid
import json

def get_plotlyjs():
    path = os.path.join('offline', 'plotly.min.js')
    plotlyjs = resource_string('plotly', path).decode('utf-8')
    return plotlyjs


def js_convert(figure_or_data,outfilename, show_link=False, link_text='Export to plot.ly',
          validate=True):

    figure = tools.return_figure_from_figure_or_data(figure_or_data, validate)

    width = figure.get('layout', {}).get('width', '100%')
    height = figure.get('layout', {}).get('height', 525)
    try:
        float(width)
    except (ValueError, TypeError):
        pass
    else:
        width = str(width) + 'px'

    try:
        float(width)
    except (ValueError, TypeError):
        pass
    else:
        width = str(width) + 'px'

    plotdivid = uuid.uuid4()
    jdata = json.dumps(figure.get('data', []), cls=utils.PlotlyJSONEncoder)
    jlayout = json.dumps(figure.get('layout', {}), cls=utils.PlotlyJSONEncoder)

    config = {}
    config['showLink'] = show_link
    config['linkText'] = link_text
    config["displaylogo"]=False
    config["modeBarButtonsToRemove"]= ['sendDataToCloud']
    jconfig = json.dumps(config)

    plotly_platform_url = session.get_session_config().get('plotly_domain',
                                                           'https://plot.ly')
    if (plotly_platform_url != 'https://plot.ly' and
            link_text == 'Export to plot.ly'):

        link_domain = plotly_platform_url\
            .replace('https://', '')\
            .replace('http://', '')
        link_text = link_text.replace('plot.ly', link_domain)


    script = '\n'.join([
        'Plotly.plot("{id}", {data}, {layout}, {config}).then(function() {{',
        '    $(".{id}.loading").remove();',
        '}})'
    ]).format(id=plotdivid,
              data=jdata,
              layout=jlayout,
              config=jconfig)

    html="""<div class="{id} loading" style="color: rgb(50,50,50);">
                 Drawing...</div>
                 <div id="{id}" style="height: {height}; width: {width};" 
                 class="plotly-graph-div">
                 </div>
                 <script type="text/javascript">
                 {script}
                 </script>
                 """.format(id=plotdivid, script=script,
                           height=height, width=width)

    #html =  html.replace('\n', '')
    with open(outfilename, 'wb') as out:
        out.write(r'<script src="https://cdn.plot.ly/plotly-latest.min.js"></script>')
        for line in html.split('\n'):
            out.write(line)

        out.close()
    print ('JS Conversion Complete')

按原样调用该函数：

js_convert(fig, 'test.html')

的产率：

<script src="https://cdn.plot.ly/plotly-latest.min.js"></script><div class="e64ff355-dc9b-4590-b73f-7205bab419e4 loading" style="color: rgb(50,50,50);">				 Drawing...</div>				 <div id="e64ff355-dc9b-4590-b73f-7205bab419e4" style="height: 525; width: 100%;" 				 class="plotly-graph-div">				 </div>				 <script type="text/javascript">				 Plotly.plot("e64ff355-dc9b-4590-b73f-7205bab419e4", [{"y": [0.36148484439726264, 1.6045981780799277, 0.5507855248785238, 0.18167000155375446, -0.5830103342058794, -1.2558535605522596, -0.08340659329309585, 0.450050138741226, -0.18235947469661468, 0.43578829670291425, -0.34179657723027246, -1.1885547789442408, 1.1711835640698656, -1.9747040430544132, 2.2991610913793, -0.4964787876693661, -0.4595693157438461, 0.5324541015910377, -0.5867874556489581, -0.35572379506478163, -0.2952652828831782, 1.0848624947043213, -0.9288529595558911, -1.090484376260672, -1.7202073606031347, -0.4557667853134118, 0.5309491929233173, 1.0185126199164043, 2.0295491433613932, 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使用plotly绘制3D绘图

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