Шаблон:Graph

{{Graph}} — шаблон, позволяющий внедрять в страницы визуализации, отрисованные программой Vega.

Визуализация описывается особым языком, являющимся подмножеством JSON.

Особенностью реализации является то, что визуализация отрисовывается и на стороне сервера, и на стороне клиента. Первое созраняет визуализацию в средах без JavaScript, например, при экспорте в PDF, второе делает визуализации интерактивными в браузере.

Параметры

1. или vega — описание визуализации. Все | должны быть заменены на {{!}}, }} на } }, = на {{=}} (вместо последнего можно использовать именованный параметр vega),

• ширина (необязательный) — ширина в пикселях,
• высота (необязательный) — высота в пикселях.

Примеры

Викитекст	Вывод
{{graph|width=400|vega={ "$schema": "https://vega.github.io/schema/vega/v5.json", "description": "A basic bar chart example, with value labels shown upon mouse hover.", "width": 400, "height": 200, "padding": 5, "data": [ { "name": "table", "values": [ {"category": "A", "amount": 28}, {"category": "B", "amount": 55}, {"category": "C", "amount": 43}, {"category": "D", "amount": 91}, {"category": "E", "amount": 81}, {"category": "F", "amount": 53}, {"category": "G", "amount": 19}, {"category": "H", "amount": 87} ] } ], "signals": [ { "name": "tooltip", "value": {}, "on": [ {"events": "rect:mouseover", "update": "datum"}, {"events": "rect:mouseout", "update": "{}"} ] } ], "scales": [ { "name": "xscale", "type": "band", "domain": {"data": "table", "field": "category"}, "range": "width", "padding": 0.05, "round": true }, { "name": "yscale", "domain": {"data": "table", "field": "amount"}, "nice": true, "range": "height" } ], "axes": [ { "orient": "bottom", "scale": "xscale" }, { "orient": "left", "scale": "yscale" } ], "marks": [ { "type": "rect", "from": {"data":"table"}, "encode": { "enter": { "x": {"scale": "xscale", "field": "category"}, "width": {"scale": "xscale", "band": 1}, "y": {"scale": "yscale", "field": "amount"}, "y2": {"scale": "yscale", "value": 0} }, "update": { "fill": {"value": "steelblue"} }, "hover": { "fill": {"value": "red"} } } }, { "type": "text", "encode": { "enter": { "align": {"value": "center"}, "baseline": {"value": "bottom"}, "fill": {"value": "#333"} }, "update": { "x": {"scale": "xscale", "signal": "tooltip.category", "band": 0.5}, "y": {"scale": "yscale", "signal": "tooltip.amount", "offset": -2}, "text": {"signal": "tooltip.amount"}, "fillOpacity": [ {"test": "datum === tooltip", "value": 0}, {"value": 1} ] } } } ] } }}
{{graph|width=400|vega={ "$schema": "https://vega.github.io/schema/vega/v5.json", "description": "A plot of 2016 annual global precipitation data from the NOAA Climate Forecast System (CFS) v2.", "width": 600, "height": 300, "autosize": { "type": "fit", "contains": "padding" }, "signals": [ { "name": "projection", "value": "naturalEarth1", "bind": {"input": "select", "options": [ "azimuthalEqualArea", "equalEarth", "equirectangular", "naturalEarth1", "mollweide", "orthographic" ]} }, { "name": "scale", "value": 110, "bind": {"input": "range", "min": 50, "max": 400, "step": 5} }, { "name": "rotate0", "value": 0, "bind": {"input": "range", "min": -180, "max": 180, "step": 1} }, { "name": "rotate1", "value": 0, "bind": {"input": "range", "min": 0, "max": 360, "step": 1} }, { "name": "rotate2", "value": 0, "bind": {"input": "range", "min": 0, "max": 360, "step": 1} }, { "name": "opacity", "value": 0.5, "bind": {"input": "range", "min": 0, "max": 1, "step": 0.01} }, { "name": "levels", "value": 6, "bind": {"input": "range", "min": 2, "max": 12, "step": 1} }, { "name": "stop", "value": 3000 }, { "name": "step", "update": "stop / levels" } ], "data": [ { "name": "precipitation", "url": "https:{{filepath:Annual-precip.json}}" }, { "name": "contours", "source": "precipitation", "transform": [ { "type": "isocontour", "thresholds": {"signal": "sequence(step, stop, step)"} } ] }, { "name": "world", "url": "https:{{filepath:World-110m.json}}", "format": {"type": "topojson", "feature": "countries"} } ], "projections": [ { "name": "projection", "type": {"signal": "projection"}, "scale": {"signal": "scale"}, "rotate": {"signal": "[rotate0, rotate1, rotate2]"}, "translate": {"signal": "[width/2, height/2]"} } ], "scales": [ { "name": "color", "type": "quantize", "domain": {"signal": "[0, stop]"}, "range": {"scheme": "bluepurple", "count": {"signal": "levels"} } } ], "marks": [ { "type": "shape", "clip": true, "from": {"data": "world"}, "encode": { "update": { "strokeWidth": {"value": 1}, "stroke": {"value": "#eee"}, "fill": {"value": "#ddd"} } }, "transform": [ { "type": "geoshape", "projection": "projection" } ] }, { "type": "shape", "clip": true, "from": { "data": "contours"}, "encode": { "update": { "fill": {"scale": "color", "field": "contour.value"}, "fillOpacity": {"signal": "opacity"} } }, "transform": [ { "type": "geoshape", "field": "datum.contour", "projection": "projection" } ] } ], "legends": [ { "title": "Annual Precipitation (mm)", "fill": "color", "orient": "bottom", "offset": 5, "type": "gradient", "gradientLength": 300, "gradientThickness": 12, "titlePadding": 10, "titleOrient": "left", "titleAnchor": "end", "direction": "horizontal" } ], "config": { "legend": {"layout": {"anchor": "middle"} } } } }}
{{graph|width=400|height=350|vega={ "$schema": "https://vega.github.io/schema/vega/v5.json", "description": "Interactive map of U.S. airport connections in 2008.", "width": 900, "height": 560, "autosize": { "type": "fit", "contains": "padding" }, "padding": {"top": 25, "left": 0, "right": 0, "bottom": 0}, "signals": [ { "name": "scale", "value": 1200, "bind": {"input": "range", "min": 500, "max": 3000} }, { "name": "translateX", "value": 450, "bind": {"input": "range", "min": -500, "max": 1200} }, { "name": "translateY", "value": 260, "bind": {"input": "range", "min": -300, "max": 700} }, { "name": "shape", "value": "line", "bind": {"input": "radio", "options": ["line", "curve"]} }, { "name": "hover", "value": null, "on": [ {"events": "@cell:pointerover", "update": "datum"}, {"events": "@cell:pointerout", "update": "null"} ] }, { "name": "title", "value": "U.S. Airports, 2008", "update": "hover ? hover.name + ' (' + hover.iata + ')' : 'U.S. Airports, 2008'" }, { "name": "cell_stroke", "value": null, "on": [ {"events": "dblclick", "update": "cell_stroke ? null : 'brown'"}, {"events": "pointerdown!", "update": "cell_stroke"} ] } ], "data": [ { "name": "states", "url": "https:{{filepath:Us-10m.json}}", "format": {"type": "topojson", "feature": "states"}, "transform": [ { "type": "geopath", "projection": "projection" } ] }, { "name": "traffic", "url": "https:{{filepath:Flights-airport.csv}}", "format": {"type": "csv", "parse": "auto"}, "transform": [ { "type": "aggregate", "groupby": ["origin"], "fields": ["count"], "ops": ["sum"], "as": ["flights"] } ] }, { "name": "airports", "url": "https:{{filepath:Airports.csv}}", "format": {"type": "csv","parse": "auto" }, "transform": [ { "type": "lookup", "from": "traffic", "key": "origin", "fields": ["iata"], "as": ["traffic"] }, { "type": "filter", "expr": "datum.traffic != null" }, { "type": "geopoint", "projection": "projection", "fields": ["longitude", "latitude"] }, { "type": "filter", "expr": "!(datum.x==null {{!}}{{!}} datum.y==null)" }, { "type": "voronoi", "x": "x", "y": "y" }, { "type": "collect", "sort": { "field": "traffic.flights", "order": "descending" } } ] }, { "name": "routes", "url": "https:{{filepath:Flights-airport.csv}}", "format": {"type": "csv", "parse": "auto"}, "transform": [ { "type": "filter", "expr": "!(!hover {{!}}{{!}} hover.iata != datum.origin)" }, { "type": "lookup", "from": "airports", "key": "iata", "fields": ["origin", "destination"], "as": ["source", "target"] }, { "type": "filter", "expr": "!(!datum.source {{!}}{{!}} !datum.target)" }, { "type": "linkpath", "shape": {"signal": "shape"} } ] } ], "projections": [ { "name": "projection", "type": "albersUsa", "scale": {"signal": "scale"}, "translate": [{"signal": "translateX"}, {"signal": "translateY"}] } ], "scales": [ { "name": "size", "type": "linear", "domain": {"data": "traffic", "field": "flights"}, "range": [16, 1000] } ], "marks": [ { "type": "path", "from": {"data": "states"}, "encode": { "enter": { "fill": {"value": "#dedede"}, "stroke": {"value": "white"} }, "update": { "path": {"field": "path"} } } }, { "type": "symbol", "from": {"data": "airports"}, "encode": { "enter": { "size": {"scale": "size", "field": "traffic.flights"}, "fill": {"value": "steelblue"}, "fillOpacity": {"value": 0.8}, "stroke": {"value": "white"}, "strokeWidth": {"value": 1.5} }, "update": { "x": {"field": "x"}, "y": {"field": "y"} } } }, { "type": "path", "name": "cell", "from": {"data": "airports"}, "encode": { "enter": { "fill": {"value": "transparent"}, "strokeWidth": {"value": 0.35} }, "update": { "path": {"field": "path"}, "stroke": {"signal": "cell_stroke"} } } }, { "type": "path", "interactive": false, "from": {"data": "routes"}, "encode": { "enter": { "path": {"field": "path"}, "stroke": {"value": "black"}, "strokeOpacity": {"value": 0.35} } } }, { "type": "text", "interactive": false, "encode": { "enter": { "x": {"value": 895}, "y": {"value": 0}, "fill": {"value": "black"}, "fontSize": {"value": 20}, "align": {"value": "right"} }, "update": { "text": {"signal": "title"} } } } ] } }}

Системные требования

Системаные требования и настройки описаны в статье graph.

Ссылки

• Vega – A Visualization Grammar.