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Expose an "empty" property for selections.
By default, all data values are considered to lie within an empty selection. When set to none, empty selections contain no data values.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,221 @@ | ||
| { | ||
| "$schema": "https://vega.github.io/schema/vega/v3.0.json", | ||
| "autosize": "pad", | ||
| "padding": 5, | ||
| "width": 200, | ||
| "height": 200, | ||
| "style": "cell", | ||
| "data": [ | ||
| { | ||
| "name": "paintbrush_store" | ||
| }, | ||
| { | ||
| "name": "source_0", | ||
| "url": "data/cars.json", | ||
| "format": { | ||
| "type": "json", | ||
| "parse": { | ||
| "Horsepower": "number", | ||
| "Miles_per_Gallon": "number" | ||
| } | ||
| }, | ||
| "transform": [ | ||
| { | ||
| "type": "identifier", | ||
| "as": "_vgsid_" | ||
| }, | ||
| { | ||
| "type": "filter", | ||
| "expr": "datum[\"Horsepower\"] !== null && !isNaN(datum[\"Horsepower\"]) && datum[\"Miles_per_Gallon\"] !== null && !isNaN(datum[\"Miles_per_Gallon\"])" | ||
| } | ||
| ] | ||
| } | ||
| ], | ||
| "signals": [ | ||
| { | ||
| "name": "unit", | ||
| "value": {}, | ||
| "on": [ | ||
| { | ||
| "events": "mousemove", | ||
| "update": "isTuple(group()) ? group() : unit" | ||
| } | ||
| ] | ||
| }, | ||
| { | ||
| "name": "paintbrush_tuple", | ||
| "value": {}, | ||
| "on": [ | ||
| { | ||
| "events": [ | ||
| { | ||
| "source": "scope", | ||
| "type": "mouseover" | ||
| } | ||
| ], | ||
| "update": "datum && item().mark.marktype !== 'group' ? {unit: \"\", encodings: [], fields: [\"_vgsid_\"], values: [datum[\"_vgsid_\"]]} : null", | ||
| "force": true | ||
| } | ||
| ] | ||
| }, | ||
| { | ||
| "name": "paintbrush_toggle", | ||
| "value": false, | ||
| "on": [ | ||
| { | ||
| "events": [ | ||
| { | ||
| "source": "scope", | ||
| "type": "mouseover" | ||
| } | ||
| ], | ||
| "update": "event.shiftKey" | ||
| } | ||
| ] | ||
| }, | ||
| { | ||
| "name": "paintbrush_modify", | ||
| "on": [ | ||
| { | ||
| "events": { | ||
| "signal": "paintbrush_tuple" | ||
| }, | ||
| "update": "modify(\"paintbrush_store\", paintbrush_toggle ? null : paintbrush_tuple, paintbrush_toggle ? null : true, paintbrush_toggle ? paintbrush_tuple : null)" | ||
| } | ||
| ] | ||
| } | ||
| ], | ||
| "marks": [ | ||
| { | ||
| "name": "marks", | ||
| "type": "symbol", | ||
| "style": [ | ||
| "point" | ||
| ], | ||
| "from": { | ||
| "data": "source_0" | ||
| }, | ||
| "encode": { | ||
| "update": { | ||
| "x": { | ||
| "scale": "x", | ||
| "field": "Horsepower" | ||
| }, | ||
| "y": { | ||
| "scale": "y", | ||
| "field": "Miles_per_Gallon" | ||
| }, | ||
| "stroke": { | ||
| "value": "#4c78a8" | ||
| }, | ||
| "fill": { | ||
| "value": "transparent" | ||
| }, | ||
| "size": [ | ||
| { | ||
| "test": "(vlMulti(\"paintbrush_store\", datum))", | ||
| "value": 300 | ||
| }, | ||
| { | ||
| "value": 50 | ||
| } | ||
| ], | ||
| "opacity": { | ||
| "value": 0.7 | ||
| } | ||
| } | ||
| } | ||
| } | ||
| ], | ||
| "scales": [ | ||
| { | ||
| "name": "x", | ||
| "type": "linear", | ||
| "domain": { | ||
| "data": "source_0", | ||
| "field": "Horsepower" | ||
| }, | ||
| "range": [ | ||
| 0, | ||
| { | ||
| "signal": "width" | ||
| } | ||
| ], | ||
| "nice": true, | ||
| "zero": true | ||
| }, | ||
| { | ||
| "name": "y", | ||
| "type": "linear", | ||
| "domain": { | ||
| "data": "source_0", | ||
| "field": "Miles_per_Gallon" | ||
| }, | ||
| "range": [ | ||
| { | ||
| "signal": "height" | ||
| }, | ||
| 0 | ||
| ], | ||
| "nice": true, | ||
| "zero": true | ||
| } | ||
| ], | ||
| "axes": [ | ||
| { | ||
| "scale": "x", | ||
| "labelOverlap": true, | ||
| "orient": "bottom", | ||
| "tickCount": { | ||
| "signal": "ceil(width/40)" | ||
| }, | ||
| "title": "Horsepower", | ||
| "zindex": 1 | ||
| }, | ||
| { | ||
| "scale": "x", | ||
| "domain": false, | ||
| "grid": true, | ||
| "labels": false, | ||
| "maxExtent": 0, | ||
| "minExtent": 0, | ||
| "orient": "bottom", | ||
| "tickCount": { | ||
| "signal": "ceil(width/40)" | ||
| }, | ||
| "ticks": false, | ||
| "zindex": 0, | ||
| "gridScale": "y" | ||
| }, | ||
| { | ||
| "scale": "y", | ||
| "labelOverlap": true, | ||
| "orient": "left", | ||
| "tickCount": { | ||
| "signal": "ceil(height/40)" | ||
| }, | ||
| "title": "Miles_per_Gallon", | ||
| "zindex": 1 | ||
| }, | ||
| { | ||
| "scale": "y", | ||
| "domain": false, | ||
| "grid": true, | ||
| "labels": false, | ||
| "maxExtent": 0, | ||
| "minExtent": 0, | ||
| "orient": "left", | ||
| "tickCount": { | ||
| "signal": "ceil(height/40)" | ||
| }, | ||
| "ticks": false, | ||
| "zindex": 0, | ||
| "gridScale": "x" | ||
| } | ||
| ], | ||
| "config": { | ||
| "axisY": { | ||
| "minExtent": 30 | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| { | ||
| "$schema": "https://vega.github.io/schema/vega-lite/v2.json", | ||
| "data": {"url": "data/cars.json"}, | ||
| "selection": { | ||
| "paintbrush": { | ||
| "type": "multi", | ||
| "on": "mouseover", "empty": "none" | ||
| } | ||
| }, | ||
| "mark": "point", | ||
| "encoding": { | ||
| "x": {"field": "Horsepower", "type": "quantitative"}, | ||
| "y": {"field": "Miles_per_Gallon", "type": "quantitative"}, | ||
| "size": { | ||
| "condition": { | ||
| "selection": "paintbrush", "value": 300 | ||
| }, | ||
| "value": 50 | ||
| } | ||
| } | ||
| } |
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