Extension:Graph/Demo/Dendrogram
< Extension:Graph | Demo
<graph>
{
"width": 600,
"height": 150,
"background": "#ffffff",
"data": [
{
"name": "tree",
"values": [
{"A": "Mammal","B": "Carnivore","C": "Panther" },
{"A": "Mammal","B": "Carnivore","C": "Lion" },
{"A": "Mammal","B": "Herbivore","C": "Cow" },
{"A": "Mammal","B": "Herbivore","C": "Goat" },
{"A": "Mammal","B": "Omnivore","C": "Human"},
{"A": "Mammal","B": "Omnivore","C": "Bat"},
{"A": "Fish","B": "Carnivore","C": "Shark"},
{"A": "Fish","B": "Carnivore","C": "Electric Eel"},
{"A": "Fish","B": "Omnivore","C": "Piranha "},
{"A": "Fish","B": "Omnivore","C": "catfish "}
],
"transform": [
{
"type": "treeify",
"groupby": ["A","B"]
},
{
"type": "hierarchy",
"mode": "cluster",
"nodesize": [20,100]
},
{
"type": "formula",
"field": "align",
"expr": "'right'"
},
{
"type": "formula",
"field": "offset",
"expr": "-10"
}
]
}
],
"marks": [
{
"type": "path",
"from": {
"data": "tree",
"transform": [
{"type": "filter","test": "datum.parent"},
{
"type": "linkpath",
"sourceX": "parent.layout_y",
"sourceY": "parent.layout_x",
"targetX": "layout_y",
"targetY": "layout_x",
"shape": "cornerX"
}
]
},
"properties": {
"enter": {
"path": {"field": "layout_path"},
"strokeWidth": {"value": 2},
"stroke": {"value": "#000000"}
}
}
},
{
"type": "text",
"from": {
"data": "tree",
"transform": [
{
"type": "formula",
"field": "ff_node_label",
"expr": "if(datum.layout_depth == 0, 'Animals', if(datum.layout_depth == 1, datum.A, if(datum.layout_depth == 2, datum.B, if(datum.layout_depth == 3, datum.C, ''))))"
}
]
},
"properties": {
"enter": {
"x": {"field": "layout_y"},
"dx": {"field": "offset"},
"y": {"field": "layout_x"},
"dy": {"value": -8},
"font": {"value": "Arial"},
"fontSize": {"value": 16},
"align": {"field": "align"},
"baseline": {"value": "middle"},
"fill": {"value": "#0000ff"},
"text": {"field": "ff_node_label"}
}
}
}
]
}
</graph>