def create_machine_gantt(machine_id, graph_start, graph_end, hide_jobless=False):
""" Create a gantt chart of the usage of a single machine, between the two timestamps provided"""
if machine_id is None:
return "This machine does not exist"
activities = get_machine_activities(machine_id=machine_id, timestamp_start=graph_start, timestamp_end=graph_end)
# Sort the activities so that uptime is always the first.
# This is a workaround to make the graph always show uptime on the bottom
activities.sort(key=sort_activities, reverse=True)
df = get_activities_df(activities=activities, group_by="activity_code", graph_start=graph_start,
graph_end=graph_end)
if len(df) == 0:
return "No machine activity"
machine = Machine.query.get(machine_id)
graph_title = f"{machine.name} OEE"
# Create the colours dictionary using codes' colours from the database
colours = {}
for act_code in ActivityCode.query.all():
colours[act_code.short_description] = act_code.graph_colour
fig = ff.create_gantt(df,
title=graph_title,
group_tasks=True,
colors=colours,
index_col='Code',
bar_width=0.4,
show_colorbar=True)
# Create a layout object using the layout automatically created
layout = Layout(fig['layout'])
layout = apply_default_layout(layout)
layout.showlegend = True
# Highlight jobs
layout = highlight_jobs(activities, layout)
# Pass the changed layout back to fig
fig['layout'] = layout
config = {'responsive': True}
return plot(fig, output_type="div", include_plotlyjs=True, config=config)
def create_multiple_machines_gantt(graph_start, graph_end, machine_ids):
""" Creates a gantt plot of OEE for all machines in the database between given times
graph_start = the start time of the graph
graph_end = the end time of the graph
machine_ids = a list of ids to include in the graph"""
activities = []
machine_ids.sort()
for machine_id in machine_ids:
machine_activities = get_machine_activities(machine_id=machine_id, timestamp_start=graph_start,
timestamp_end=graph_end)
# If a machine has no activities, add a fake one so it still shows on the graph
if len(machine_activities) == 0:
activities.append(Activity(timestamp_start=graph_start, timestamp_end=graph_start))
else:
activities.extend(machine_activities)
df = get_activities_df(activities=activities,
group_by="machine_name",
graph_start=graph_start,
graph_end=graph_end,
crop_overflow=True)
if len(df) == 0:
return "No machine activity"
# Create the colours dictionary using codes' colours from the database
colours = {}
for act_code in ActivityCode.query.all():
colours[act_code.short_description] = act_code.graph_colour
fig = ff.create_gantt(df,
group_tasks=True,
colors=colours,
index_col='Code',
bar_width=0.4)
# Create a layout object using the layout automatically created
layout = Layout(fig['layout'])
layout = apply_default_layout(layout)
layout.showlegend = True
fig['layout'] = layout
config = {'responsive': True}
return plot(fig, output_type="div", include_plotlyjs=True, config=config)
