Карта мира: различия между версиями

Материал из wiki.energogroup.org
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(Содержимое страницы заменено на « <graph> { "version": 2, "width": 100, "height": 100, "data": [ { "name": "table", "values": [12,23,47,6,52...»)
Метка: замена
Строка 1: Строка 1:
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<graph>
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{
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"version": 2,
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"width": 300,
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"height": 300,
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"data": [
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{
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// Data is retrieved from the MediaWiki API. By default it uses current wiki's "Extension by category"
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"name": "table",
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"url": "wikiapi:///?generator=categorymembers&gcmtitle=Category:Extensions+by+category&gcmtype=subcat&action=query&gcmlimit=max&prop=categoryinfo&formatversion=2&format=json",
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// We are only interested in the content of query.pages subelement.
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"format": {"property": "query.pages","type": "json"},
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"transform": [
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// sort in descending order using category size as the sort key
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{"type": "sort","by": "-categoryinfo.size"},
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// To visualize, use "pie" transformation to add layout_start, layout_end, and layout_mid fields to each page object
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// These fields contain angles at which to start and stop drawing arcs. First element's start will be 0, and last element's end will be 360 degrees (in radians)
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{"type": "pie","field": "categoryinfo.size"}
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]
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}
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],
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// Scales are like functions -- marks use them to convert a data value into a visual value, like x or y coordinate on the graph, or a color value.
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"scales": [
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{
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// This scale will be used to assign a color to each slice, using a palette of 10 colors
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"name": "color",
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"domain": {"data": "table","field": "title"},
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"range": "category10",
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"type": "ordinal"
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}
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],
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"marks": [
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{
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// This mark draws the actual pie chart from the data source
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// Each element is an arc between layout_start and layout_end angles (as calculated by the pie transformation)
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// drawn with a given radius, stroke, and fill.
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"from": {"data": "table"},
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"type": "arc",
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"properties": {
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"enter": {
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"fill": {"scale": "color","field": "title"},
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"outerRadius": {"value": 200},
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"startAngle": {"field": "layout_start"},
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"endAngle": {"field": "layout_end"},
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"stroke": {"value": "white"},
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"strokeWidth": {"value": 1}
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}
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}
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},
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{
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// This mark draws labels around the pie chart after the pie chart has been drawn
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"type": "text",
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// Before drawing, we need to perform a number of calculations to figure out the exact location and orientation of the text
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"from": {
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"data": "table",
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"transform": [
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// For each data point (datum), each of these transformations will be ran in order.
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// Formula transformation evaluates the expression and assigns result to the datapoint
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// Size of the pie slice, in degrees: sliceSize = (end - start) * 180 / Pi
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{ "type": "formula", "field": "sliceSize", "expr": "(datum.layout_end - datum.layout_start)*180/PI" },
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// Draw text only if the slice of the arc is more than 2 degrees to avoid overcrowding
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{ "type": "filter", "test": "datum.sliceSize > 2" },
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// Remove namespace from the text - keeps only text after the first ':' symbol, limits to 40 chars.
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{ "type": "formula", "field": "title", "expr": "substring(datum.title, 1+indexof(datum.title,':'), 40)" },
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// Determine the side of the pie chart we are on - left or right.
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{ "type": "formula", "field": "invert", "expr": "datum.layout_mid*180/PI < 180 ? 1 : -1" },
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// If on the left, the text should be right-aligned (go from the rim inward)
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{ "type": "formula", "field": "align", "expr": "datum.invert < 0 ? 'left' : 'right'" },
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// At what angle should the text be drawn relative to the point on the circle
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{ "type": "formula", "field": "angle", "expr": "(datum.layout_mid*180/PI)-90*datum.invert" },
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// Make font smaller for smaller pie slices
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{ "type": "formula", "field": "fontSize", "expr": "datum.sliceSize > 20 ? 15 : (datum.sliceSize > 10 ? 14 : 10)" },
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// Make font bold for largest pie slices
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{ "type": "formula", "field": "fontWeight", "expr": "datum.sliceSize > 15 ? 'bold' : 'normal'" }
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]
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},
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"properties": {
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"enter": {
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// Use the fields calculated in the transformation to draw category names
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"align": {"field": "align"},
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"angle": {"field": "angle"},
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"baseline": {"value": "middle"},
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"fill": {"value": "black"},
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"fontSize": {"field": "fontSize"},
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"fontWeight": {"field": "fontWeight"},
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"radius": {"value": 270},
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"text": {"field": "title"},
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"theta": {"field": "layout_mid"}
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}
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}
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}
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]
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}
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</graph>
   
 
<graph>
  
<graph>

Версия от 15:25, 7 ноября 2022

Источник — https://wiki.energogroup.org/mediawiki/index.php?title=Карта_мира&oldid=2430