Interaktywne tabele w dashboardzie sprzedażowym
Główny dashboard sprzedażowy przeszedł długą drogę od początku tej pracy.
Dashboard zyskał szerokie uznanie w firmie i zebrał wiele pozytywnych opinii. Pojawiły się jednak prośby o zwiększenie interaktywności komponentu tabelarycznego. Konkretnie – użytkownicy chcieliby móc zaznaczać określony wiersz i na tej podstawie zmieniać oś na wykresie punktowym poniżej.
To ćwiczenie jest częścią kursu
Tworzenie dashboardów z Dash i Plotly
Instrukcje do ćwiczenia
- Włącz wybieranie pojedynczego wiersza w
grid, ustawiając parametrrowSelectionponiżej linii25. - Utwórz callback poniżej linii
63, który będzie używałselectedRowszmy_griddo aktualizacji wykresuscatter_compare– zaznaczony kraj powinien być wyróżniony jako duża czerwona kropka.
Interaktywne ćwiczenie praktyczne
Spróbuj tego ćwiczenia, uzupełniając ten przykładowy kod.
from dash import Dash, dcc, html, Input, Output, callback
import plotly.express as px
import pandas as pd
from dash_ag_grid import AgGrid
ecom_sales = pd.read_csv('/usr/local/share/datasets/ecom_sales.csv')
logo_link = 'https://assets.datacamp.com/production/repositories/5893/datasets/fdbe0accd2581a0c505dab4b29ebb66cf72a1803/e-comlogo.png'
major_categories = list(ecom_sales['Major Category'].unique())
large_tb = ecom_sales.groupby(['Country'])['OrderValue'].agg(['sum', 'count', 'mean', 'median']).reset_index().rename(columns={'count':'Sales Volume', 'sum':'Total Sales ($)', 'mean':'Average Order Value ($)', 'median':'Median Order Value ($)'})
ecom_country = ecom_sales.groupby('Country')['OrderValue'].agg('sum').reset_index(name='Total Sales ($)')
bar_fig_country = px.bar(ecom_country, x='Total Sales ($)', y='Country', width=500, height=450, title='Total Sales by Country (Hover to filter the Minor Category bar chart!)', custom_data=['Country'], color='Country', color_discrete_map={'United Kingdom':'lightblue', 'Germany':'orange', 'France':'darkblue', 'Australia':'green', 'Hong Kong':'pink'})
money_fmt = {"function": ("params.value.toLocaleString('en-US', {style: 'currency', currency: 'USD'})")}
column_defs = [
{"field": "Country"},
{"field": "Total Sales ($)", "valueFormatter": money_fmt},
{"field": "Average Order Value ($)", "valueFormatter": money_fmt},
{"field": "Median Order Value ($)", "valueFormatter": money_fmt},
{"field": "Sales Volume"},
]
grid = AgGrid(
id="my_grid",
columnDefs=column_defs,
rowData=large_tb.to_dict("records"),
# Enable single-row selection
dashGridOptions={"____": "____"},
defaultColDef={
"cellStyle": {
"textAlign": "left",
"backgroundColor": "black",
"color": "white"}}
)
app = Dash()
app.layout = [
html.Img(src=logo_link,
style={'margin':'30px 0px 0px 0px' }),
html.H1('Sales breakdowns'),
html.Div([
html.H2('Controls'),
html.Br(),
html.H3('Major Category Select'),
dcc.Dropdown(id='major_cat_dd',
options=[{'label':category, 'value':category} for category in major_categories],
style={'width':'200px', 'margin':'0 auto'}),
html.Br(),
html.H3('Minor Category Select'),
dcc.Dropdown(id='minor_cat_dd', style={'width':'200px', 'margin':'0 auto'})],
style={'width':'350px', 'height':'360px', 'display':'inline-block', 'vertical-align':'top', 'border':'1px solid black', 'padding':'20px'}),
html.Div([
html.H3(id='chosen_major_cat_title'),
dcc.Graph(id='sales_line')],
style={'width':'700px', 'height':'380px','display':'inline-block', 'margin-bottom':'5px'}),
grid,
html.Br(),
html.Div([
dcc.Graph(id='scatter_compare'),
dcc.Graph(id='major_cat', figure=bar_fig_country, style={'display':'inline-block'}),
dcc.Graph(id='minor_cat', style={'display':'inline-block'})],
style={'width':'1000px', 'height':'650px','display':'inline-block'})
]
# Create a callback with the right input
@callback(
Output('scatter_compare', 'figure'),
Input('my_grid', '____')
)
def update_scatter(selected_rows):
fig = px.scatter(
large_tb,
x='Sales Volume',
y='Total Sales ($)',
color='Country',
title='Sales Volume vs Total Sales ($) — click a row to highlight')
if selected_rows:
sel_df = pd.DataFrame(selected_rows)
highlight = px.scatter(
sel_df,
x='Sales Volume',
y='Total Sales ($)',
color_discrete_sequence=['#ff0000'],
size=[15] * len(sel_df))
fig.add_trace(highlight.data[0])
return fig
@callback(
Output('minor_cat_dd', 'options'),
Output('chosen_major_cat_title', 'children'),
Input('major_cat_dd', 'value'))
def update_dd(major_cat_dd):
major_minor = ecom_sales[['Major Category', 'Minor Category']].drop_duplicates()
relevant_minor = major_minor[major_minor['Major Category'] == major_cat_dd]['Minor Category'].values.tolist()
minor_options = [dict(label=x, value=x) for x in relevant_minor]
if not major_cat_dd:
major_cat_dd = 'ALL'
major_cat_title = f'This is in the Major Category of : {major_cat_dd}'
return minor_options, major_cat_title
@callback(
Output('sales_line', 'figure'),
Input('minor_cat_dd', 'value'))
def update_line(minor_cat):
minor_cat_title = 'All'
ecom_line = ecom_sales.copy()
if minor_cat:
minor_cat_title = minor_cat
ecom_line = ecom_line[ecom_line['Minor Category'] == minor_cat]
ecom_line = ecom_line.groupby('Year-Month')['OrderValue'].agg('sum').reset_index(name='Total Sales ($)')
line_graph = px.line(ecom_line, x='Year-Month', y='Total Sales ($)', title=f'Total Sales by Month for Minor Category: {minor_cat_title}', height=350)
return line_graph
@callback(
Output('minor_cat', 'figure'),
Input('major_cat', 'hoverData'))
def update_min_cat_hover(hoverData):
hover_country = 'Australia'
if hoverData:
hover_country = hoverData['points'][0]['customdata'][0]
minor_cat_df = ecom_sales[ecom_sales['Country'] == hover_country]
minor_cat_agg = minor_cat_df.groupby('Minor Category')['OrderValue'].agg('sum').reset_index(name='Total Sales ($)')
ecom_bar_minor_cat = px.bar(minor_cat_agg, x='Total Sales ($)', y='Minor Category', orientation='h', height=450, width=480,title=f'Sales by Minor Category for: {hover_country}')
ecom_bar_minor_cat.update_layout({'yaxis':{'dtick':1, 'categoryorder':'total ascending'}, 'title':{'x':0.5}})
return ecom_bar_minor_cat
if __name__ == '__main__':
app.run(debug=True)