Gantt chart legend scrolls dues to extra legend entries

[jonmmease]

The gantt chart legend sometimes scrolls unnecessarily.

Cross references:

• Community forums thread: https://community.plot.ly/t/gantt-chart-set-legend-colorbar-at-the-top-of-chart/14733/19.
• PR that addressed legend entries being pushed to the bottom: Show colors at the top of the gantt's colorbar #1110

import pandas as pd
from plotly.offline import init_notebook_mode, iplot
import plotly.figure_factory as ff
init_notebook_mode()

df1 = pd.DataFrame({'TaskName': ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'I', 'J', 'K'],
                'StartDate1' : ['2019-03-27 00:00:00','2019-03-27 00:00:30', '2019-03-27 00:01:00', '2019-03-27 00:01:30', '2019-03-27 00:01:40',
                             '2019-03-27 00:02:30', '2019-03-27 00:03:00', '2019-03-27 00:03:30', '2019-03-27 00:04:00', '2019-03-27 00:04:30'],
                'EndDate1': ['2019-03-27 00:03:00', '2019-03-27 00:03:20', '2019-03-27 00:04:10', '2019-03-27 00:03:40', '2019-03-27 00:05:50',
                            '2019-03-27 00:06:40', '2019-03-27 00:07:10', '2019-03-27 00:08:00', '2019-03-27 00:08:20', '2019-03-27 00:08:40'],
                'StartDate2' : ['2019-03-27 00:03:00', '2019-03-27 00:03:20', '2019-03-27 00:04:10', '2019-03-27 00:03:40', '2019-03-27 00:05:50',
                            '2019-03-27 00:06:40', '2019-03-27 00:07:10', '2019-03-27 00:08:00', '2019-03-27 00:08:20', '2019-03-27 00:08:40'],
                'EndDate2': ['2019-03-27 00:04:00', '2019-03-27 00:04:20', '2019-03-27 00:05:10', '2019-03-27 00:05:40', '2019-03-27 00:06:50',
                            '2019-03-27 00:07:40', '2019-03-27 00:08:10', '2019-03-27 00:09:00', '2019-03-27 00:09:20', '2019-03-27 00:09:40']})

def gantt_fig3(df1):
    data3 = []
    for row in df1.itertuples():
        data3.append(dict(Task=str(row.TaskName), Start=str(row.StartDate1),
                      Finish=str(row.EndDate1), Resource='Resource1'))
        data3.append(dict(Task=str(row.TaskName), Start=str(row.StartDate2),
                      Finish=str(row.EndDate2), Resource='Resource2'))


    fig = ff.create_gantt(data3, index_col='Resource', title='Gantt Chart', show_colorbar = True, group_tasks = True , height=500, width=1300 )
    fig['layout'].update(legend=dict(traceorder='reversed'))
    return fig

iplot(gantt_fig3(df1))

[gvwilson]

Hi - we are currently trying to tidy up Plotly's public repositories to help us focus our efforts on things that will help users most. Since this issue has been sitting for several years, I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our backlog. Thanks for your help - @gvwilson