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Vega experiment
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| { | |
| "$schema": "https://vega.github.io/schema/vega/v5.json", | |
| "width": 500, | |
| "height": 500, | |
| "title": "Test heatmap", | |
| "data": [ | |
| { | |
| "name": "input", | |
| "values": [ | |
| {"x": 0, "y": 0, "val": 0}, | |
| {"x": 0, "y": 1, "val": 1}, | |
| {"x": 0, "y": 2, "val": 3}, | |
| {"x": 1, "y": 0, "val": 0}, | |
| {"x": 1, "y": 1, "val": 3}, | |
| {"x": 1, "y": 2, "val": 3}, | |
| {"x": 2, "y": 0, "val": 1}, | |
| {"x": 2, "y": 1, "val": 4}, | |
| {"x": 2, "y": 2, "val": 5} | |
| ] | |
| } | |
| ], | |
| "signals": [ | |
| {"name": "rectwidth", "update": "width / 3"}, | |
| {"name": "rectheight", "update": "height / 3"}, | |
| {"name": "xrange", "update": "[0, width]"}, | |
| {"name": "yrange", "update": "[height, 0]"} | |
| ], | |
| "scales": [ | |
| { | |
| "name": "xscale", | |
| "type": "band", | |
| "domain": {"data": "input", "field": "x"}, | |
| "range": {"signal": "xrange"} | |
| }, | |
| { | |
| "name": "yscale", | |
| "type": "band", | |
| "domain": {"data": "input", "field": "y"}, | |
| "range": {"signal": "yrange"} | |
| }, | |
| { | |
| "name": "color", | |
| "domain": {"data": "input", "field": "val"}, | |
| "type": "linear", | |
| "range": {"scheme": "orangered"} | |
| } | |
| ], | |
| "axes": [ | |
| {"scale": "xscale", "orient": "bottom", "tickMinStep": 1}, | |
| {"scale": "yscale", "orient": "left", "tickMinStep": 1} | |
| ], | |
| "marks": [ | |
| { | |
| "type": "rect", | |
| "from": {"data": "input"}, | |
| "encode": { | |
| "enter": { | |
| "fill": {"scale": "color", "field": "val"}, | |
| "x": {"scale": "xscale", "field": "x"}, | |
| "y": {"scale": "yscale", "field": "y"} | |
| }, | |
| "update": { | |
| "width": {"signal": "rectwidth"}, | |
| "height": {"signal": "rectheight"} | |
| } | |
| } | |
| }, | |
| { | |
| "type": "text", | |
| "from": {"data": "input"}, | |
| "encode": { | |
| "enter": { | |
| "align": {"value": "center"}, | |
| "baseline": {"value": "middle"}, | |
| "text": {"field": "val"}, | |
| "fontSize": {"value": 20}, | |
| "x": {"scale": "xscale", "field": "x"}, | |
| "y": {"scale": "yscale", "field": "y"}, | |
| "dx": {"signal": "rectwidth / 2"}, | |
| "dy": {"signal": "rectheight / 2"} | |
| } | |
| } | |
| } | |
| ] | |
| } |
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https://vega.github.io/editor/#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-s5Su0pwzZyB53BF2YTPq9YZt3vxIe4MeqiOQMgnlvbqKQI20KvHq+pPOupaauGlZhBa145goiYgNe-wFqWhpGM0SZQMKZg5nm7YGkatboPWMgFFhOFmheNaxuaGwUZK57YZK1ZEbGaTOsSyI2lSNrJqm6Awu8ijKBaXJ8XazTPMB4nOpxoCAeg-zxCBYEIDakEVrqmJIeI8GIchA42pEVw2pk0S4YZBYWvKEDGi2ZmRBZ6AIIoCiSg2cAqTaNF1hUFr6hImD7jQABeiHmQE9SqBa5GCsx4oJVGbHTjpxQMY87pJaxMZujpChxfx9pCVS6L1Pl6W2imxUyXA2hoiC5Vyac2RAA