import altair.vega.v3 as vg
from altair.datasets import load_dataset
spec = {
"$schema": "https://vega.github.io/schema/vega/v3.0.json",
"width": 400,
"height": 200,
"padding": 5,
"data": [
{
"name": "table",
"values": [
{"category": "A", "amount": 28},
{"category": "B", "amount": 55},
{"category": "C", "amount": 43},
{"category": "D", "amount": 91},
{"category": "E", "amount": 81},
{"category": "F", "amount": 53},
{"category": "G", "amount": 19},
{"category": "H", "amount": 87}
]
}
],
"signals": [
{
"name": "tooltip",
"value": {},
"on": [
{"events": "rect:mouseover", "update": "datum"},
{"events": "rect:mouseout", "update": "{}"}
]
}
],
"scales": [
{
"name": "xscale",
"type": "band",
"domain": {"data": "table", "field": "category"},
"range": "width",
"padding": 0.05,
"round": True
},
{
"name": "yscale",
"domain": {"data": "table", "field": "amount"},
"nice": True,
"range": "height"
}
],
"axes": [
{ "orient": "bottom", "scale": "xscale" },
{ "orient": "left", "scale": "yscale" }
],
"marks": [
{
"type": "rect",
"from": {"data":"table"},
"encode": {
"enter": {
"x": {"scale": "xscale", "field": "category"},
"width": {"scale": "xscale", "band": 1},
"y": {"scale": "yscale", "field": "amount"},
"y2": {"scale": "yscale", "value": 0}
},
"update": {
"fill": {"value": "steelblue"}
},
"hover": {
"fill": {"value": "red"}
}
}
},
{
"type": "text",
"encode": {
"enter": {
"align": {"value": "center"},
"baseline": {"value": "bottom"},
"fill": {"value": "#333"}
},
"update": {
"x": {"scale": "xscale", "signal": "tooltip.category", "band": 0.5},
"y": {"scale": "yscale", "signal": "tooltip.amount", "offset": -2},
"text": {"signal": "tooltip.amount"},
"fillOpacity": [
{"test": "datum === tooltip", "value": 0},
{"value": 1}
]
}
}
}
]
}
To render in the classic notebook run this line:
vg.renderers.enable('notebook')
To render in JupyterLab and nteract, run this
vg.renderers.enable('default')
vg.renderers.get()(spec)
({'application/vnd.vega.v3+json': {'$schema': 'https://vega.github.io/schema/vega/v3.0.json', 'axes': [{'orient': 'bottom', 'scale': 'xscale'}, {'orient': 'left', 'scale': 'yscale'}], 'data': [{'name': 'table', 'values': [{'amount': 28, 'category': 'A'}, {'amount': 55, 'category': 'B'}, {'amount': 43, 'category': 'C'}, {'amount': 91, 'category': 'D'}, {'amount': 81, 'category': 'E'}, {'amount': 53, 'category': 'F'}, {'amount': 19, 'category': 'G'}, {'amount': 87, 'category': 'H'}]}], 'height': 200, 'marks': [{'encode': {'enter': {'width': {'band': 1, 'scale': 'xscale'}, 'x': {'field': 'category', 'scale': 'xscale'}, 'y': {'field': 'amount', 'scale': 'yscale'}, 'y2': {'scale': 'yscale', 'value': 0}}, 'hover': {'fill': {'value': 'red'}}, 'update': {'fill': {'value': 'steelblue'}}}, 'from': {'data': 'table'}, 'type': 'rect'}, {'encode': {'enter': {'align': {'value': 'center'}, 'baseline': {'value': 'bottom'}, 'fill': {'value': '#333'}}, 'update': {'fillOpacity': [{'test': 'datum === tooltip', 'value': 0}, {'value': 1}], 'text': {'signal': 'tooltip.amount'}, 'x': {'band': 0.5, 'scale': 'xscale', 'signal': 'tooltip.category'}, 'y': {'offset': -2, 'scale': 'yscale', 'signal': 'tooltip.amount'}}}, 'type': 'text'}], 'padding': 5, 'scales': [{'domain': {'data': 'table', 'field': 'category'}, 'name': 'xscale', 'padding': 0.05, 'range': 'width', 'round': True, 'type': 'band'}, {'domain': {'data': 'table', 'field': 'amount'}, 'name': 'yscale', 'nice': True, 'range': 'height'}], 'signals': [{'name': 'tooltip', 'on': [{'events': 'rect:mouseover', 'update': 'datum'}, {'events': 'rect:mouseout', 'update': '{}'}], 'value': {}}], 'width': 400}, 'text/plain': '<Vega 3 object>'}, {})
vg.vega(spec, validate=True)
<altair.vega.v3.display.Vega at 0x109fbfa90>
vg.renderers.enable('json')
vg.vega(spec, validate=True)
<Vega 3 object>