Test: Porovnání verzí

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(Obsah stránky nahrazen textem „https://youtu.be/_B0CyOAO8y0?t=87“)
Řádek 1: Řádek 1:
https://youtu.be/_B0CyOAO8y0?t=87
https://youtu.be/_B0CyOAO8y0?t=87

<graph mode=interactive title="Stock Market">
{
"version": 2,
"width": 650,
"height": 300,
"padding": "strict",
"signals": [
{
"name": "indexDate",
"init": {"expr": "time('Jan 1 2005')"},
"streams": [{
"type": "mousemove",
"expr": "clamp(eventX(), 0, eventGroup('root').width)",
"scale": {"name": "x", "invert": true}
}]
},
{"name": "maxDate", "init": {"expr": "time('Mar 1 2010')"}}
],

"data": [
{
"name": "stocks",
"url": "wikiraw:///Extension:Graph/data/stocks-csv",
"format": {"type": "csv", "parse": {"price":"number", "date":"date"}}
},
{
"name": "index",
"source": "stocks",
"transform": [{
"type": "filter",
"test": "month(datum.date) == month(indexDate) && year(datum.date) == year(indexDate)"
}]
},
{
"name": "indexified_stocks",
"source": "stocks",
"transform": [{
"type": "lookup",
"on": "index", "onKey": "symbol",
"keys": ["symbol"], "as": ["index_term"],
"default": {"price": 0}
}, {
"type": "formula",
"field": "indexed_price",
"expr": "datum.index_term.price > 0 ? (datum.price - datum.index_term.price)/datum.index_term.price : 0"
}]
}
],

"scales": [
{
"name": "x",
"type": "time",
"domain": {"data": "stocks", "field": "date"},
"range": "width"
},
{
"name": "y",
"type": "linear",
"domain": {"data": "indexified_stocks", "field": "indexed_price"},
"range": "height",
"nice": true
},
{
"name": "color",
"type": "ordinal",
"domain": {"data": "stocks", "field": "symbol"},
"range": "category10"
}
],
"axes": [
{"type": "y", "scale": "y", "grid": true, "layer": "back", "format": "%"}
],
"marks": [
{
"type": "group",
"from": {
"data": "indexified_stocks",
"transform": [{"type": "facet", "groupby": ["symbol"]}]
},
"marks": [
{
"type": "line",
"properties": {
"update": {
"x": {"scale": "x", "field": "date"},
"y": {"scale": "y", "field": "indexed_price"},
"stroke": {"scale": "color", "field": "symbol"},
"strokeWidth": {"value": 2}
}
}
},
{
"type": "text",
"from": {
"transform": [{"type": "filter", "test": "datum.date == maxDate"}]
},
"properties": {
"update": {
"x": {"scale": "x", "field": "date", "offset": 2},
"y": {"scale": "y", "field": "indexed_price"},
"fill": {"scale": "color", "field": "symbol"},
"text": {"field": "symbol"},
"baseline": {"value": "middle"}
}
}
}
]
},
{
"type":"rule",
"properties": {
"update": {
"x": {"field": {"group": "x"}},
"x2": {"field": {"group": "width"}},
"y": {"scale": "y", "value": 0},
"stroke": {"value": "black"},
"strokeWidth": {"value": 1}
}
}
},
{
"type":"rule",
"properties": {
"update": {
"x": {"scale": "x", "signal": "indexDate"},
"y": {"value": 0},
"y2": {"field": {"group": "height"}},
"stroke": {"value": "red"}
}
}
},
{
"type":"text",
"properties": {
"update": {
"x": {"scale": "x", "signal": "indexDate"},
"y2": {"field": {"group": "height"}, "offset": 15},
"align": {"value": "center"},
"text": {"template": "\u007B{indexDate | time: '%b %Y'}}"},
"fill": {"value": "red"}
}
}
}
]
}
</graph>

Verze z 7. 4. 2020, 08:53