ChartOut - Python package

Print Your Insights, Anytime, Anywhere

With every purchase, ChartOut donates to NumFOCUS to support the open-source ecosystem behind your charts.

ChartOut turns data visualizations into beautiful, printed products. You create a chart, pick a product, and chartout handles everything from 3D preview to order fulfilment.

Install

pip install chartout

Quick start

import altair as alt
import chartout

chart = alt.Chart(data).mark_point().encode(x='x', y='y')

store = chartout.Store(chart)
store  # renders the interactive widget in Jupyter

Discover products

chartout.products()  # returns a list of available product dicts with id, name, and placements

[{'name': 'Mouse Pad (White / 8.7″x7.1″)',
  'id': 'mousepad_white_8x7',
  'placements': [{'id': 'default', 'print_ratio': '6:5'}]},
 {'name': 'Canvas (10″x10″)',
  'id': 'canvas_10x10',
  'placements': [{'id': 'default', 'print_ratio': '1:1'}]},
 {'name': 'Canvas (16″x32″) Vertical',
  'id': 'canvas_16x32_vertical',
  'placements': [{'id': 'default', 'print_ratio': '27:50'}]},
 {'name': 'Canvas (16″x32″) Horizontal',
  'id': 'canvas_16x32_horizontal',
  'placements': [{'id': 'default', 'print_ratio': '50:27'}]},
 {'name': 'Ceramic Mug with Color Inside (Black / 11 oz)',
  'id': 'mug_black_11oz',
  'placements': [{'id': 'default', 'print_ratio': '18:7'}]},
 {'name': 'Ceramic Mug with Color Inside (Green / 11 oz)',
  'id': 'mug_green_11oz',
  'placements': [{'id': 'default', 'print_ratio': '18:7'}]}]

Use the id values (e.g. 'mug_black_11oz', 'canvas_16x32_horizontal') as the first argument to chartout.item().

Create an item

chartout.item() wraps a chart and a product into a CartItem:

item = chartout.item('mug_green_11oz', chart)
item

CartItem(id='mug_green_11oz', name='Green Mug with my Viz', placements=[default], quantity=1)

The product id is validated against the API by default. Pass validate=False to skip the check when the id is already known.

Positioning

Control where the chart lands on the product via shorthand kwargs or an explicit PlacementPosition:

# shorthand — forwarded directly to PlacementPosition
item = chartout.item('mug_black_11oz', chart, horizontal='left', vertical='middle', scale=0.9)

# explicit
pos = chartout.PlacementPosition(
    horizontal='left',   # 'left' | 'center' | 'right'  (default: 'center')
    vertical='middle',   # 'top'  | 'middle' | 'bottom' (default: 'middle')
    scale=0.9,           # relative scale, optional
    dx=0.05,             # horizontal offset, optional
    dy=-0.02,            # vertical offset, optional
)
item = chartout.item('mug_black_11oz', chart, position=pos)

Build a cart

Group multiple items before opening the store:

cart = chartout.Cart([
    chartout.item('mug_black_11oz',          chart, horizontal='left',  quantity=2),
    chartout.item('canvas_16x32_horizontal', chart, horizontal='right', quantity=3),
    chartout.item('mousepad_white_8x7',      chart, horizontal='right', quantity=3),
])
cart  # prints a summary of all items

Cart:
  - ID: mug_black_11oz
    Name: mug_black_11oz
    Quantity: 2
    Placements: [default (middle, left)]
  - ID: canvas_16x32_horizontal
    Name: canvas_16x32_horizontal
    Quantity: 3
    Placements: [default (middle, right)]
  - ID: mousepad_white_8x7
    Name: mousepad_white_8x7
    Quantity: 3
    Placements: [default (middle, right)]

Add or remove items after creation:

cart.add(another_item)   # append a CartItem
cart.remove(index=0)     # remove by position

Open the store widget

Pass a single CartItem, a Cart, or a raw chart:

store = chartout.Store(item)   # single item
store = chartout.Store(cart)   # full cart
store = chartout.Store(chart)  # raw chart (no product selected yet)
store

store = chartout.Store(item, view='checkout', shipping_location={'country': 'NL'})
store

Add items to an open store without reopening it:

store.add_item(another_item)  # syncs to the widget immediately
store.cart                    # current cart state as a list of dicts

Supported chart types