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Description
create_gantt() figure factory is deprecated in favor of px.timeline, but create_gantt() has the feature (argument) group_tasks that is not present with px.timeline.
An additional issue is that the group_task argument is not explained in the create_gantt() documentation check here.
For example, the code:
import plotly.express as px
import pandas as pd
df = pd.DataFrame([
dict(Task="Job A", Start='2009-01-01', Finish='2009-02-28', Resource='Alex'),
dict(Task="Job B", Start='2009-03-05', Finish='2009-04-15', Resource='Max'),
dict(Task="Job C", Start='2009-02-20', Finish='2009-05-30', Resource='Max'),
dict(Task="Job A", Start='2009-03-02', Finish='2009-05-30', Resource='Alex')
])
fig = px.timeline(df, x_start="Start", x_end="Finish", y="Task", color = "Resource")
fig.update_yaxes(autorange="reversed") # otherwise tasks are listed from the bottom up
fig.show()
Produces:
And I would like to have each tasks in the input data frame into its own line in the y-axis, even for repeating tasks:
We can obtain this using create_gantt() like:
from plotly.figure_factory import create_gantt
fig = create_gantt(df, index_col='Resource',
showgrid_x=True, showgrid_y=True,
show_colorbar=True,
group_tasks=False
)
fig.update_yaxes(autorange="reversed")
fig.show()
Obtaining:
The order follows the order in the df which I found a correct behavior, but an extra input to define the order in create_gantt() would be useful.