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Extension:Graph/Vega 2to5 list

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Graphs are split into sections. Each section has an array ([]). Those generally start with a small indent, usually just one tab. Sentances on removing a property apply both to the property and it's value. Since Vega's own guide does not reach Vega5 (their guide has been exactly the same for 3 years), this one takes everything from it and expands upon it.

View

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Top level definitions, includes stuff like width, height, etc.

  • viewport to css
  • remove padding: auto or strict, they are default values

Data

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This is where the data for the datapoints are, which are then turned into bars, lines etc.

  • "name" is required. Used to reference to it, if missing make sure those are ok.
  • change "modify" to "on"


json
  • remove parse, specify data with "property"
csv/tsv
  • remove parse
treejson
removed

Transforms

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  • change "output" to "as"
  • change "field" under "formula" to "as"
  • change "layout_mid" and other "mid" properties to '"signal": "0,5 * (datum.y0 + datum.y1)"'
  • instead of "summarize" under "type": "aggregate" do
"type": "aggregate",
"groupby": ["cat1", "cat2"]
  • change "max" and "min" under "bin" to '"extent": [min, max]'
  • change "filter" to "expr"
  • change "on" under "lookup" to "from"
  • change "onKey" under "lookup" to "key"
  • change "keys" under "lookup" to "fields"
  • change "sort" under "scale" to '"sort":"domain"'
  • facet: see marks chapter
  • change "treeify" to "nest"
change "groupby" under "treeify" to "keys"
  • Rank support was removed

Scale

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Scales change the colors and sizes of the datapoints.

  • "name" is required
  • move "rangemin" and "rangemax" to "range", like so: '"range": [min, max]'
  • change ordinal to ordinal for lookup tables, band for scales, point for scales without padding (point:true)
  • change category10 and category20 to '"range": {"scheme": "category20"}'
  • "field" with multiple values becomes "fields"
time scales
  • "clamp" was removed
scale domains
  • "data" is required. Specify where the data is coming from.
  • "field" is required.
scale range
  • change "shapes" to: "symbol": {"shape": value}

Axes

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Axes add scale markings to an graph; lines on the X and Y axis.

  • Change "type to "orient". type:y becomes orient:left, type:x becomes orient:bottom
  • "orient" is required
  • "scale" is required
  • change "titleOffset" to "titleX" and "titleY", relative position to the axis.
  • formatType can not be string
  • change "ticks" to "tickCount"
  • "subdivide" to "tickMinStep"?
  • "tickPadding" to "labelPadding"
  • "axis" to "domain" or "update". "domain":false to hide the axis, otherwise use "update"
  • try to move "tickSizeMajor", "tickSizeMinor" and "tickSizeEnd" to "tickSize", else remove.
"tickSize" is for all ticks, the others are not.
  • "layer" to "zindex" and change to a number. "Front" = 1, "Back" = -1
  • change "properties" to "encode"

Legends

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  • change "properties" to "encode"

Marks

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Marks take the datapoints and make lines, bars, symbols, etc.

  • "type" is required
  • Comment "description" out (with \\). Vega does not use it, but it is useful as a comment.
  • Change "properties" to "encode"
  • Change "template" to "signal"
  • "from" can not include data
  • change "facet" to
"from": {
	"facet": {
		"name": value1,
		"data": value2,
		"groupby": value1
        }
},
Both value1's should be the same. Data needs to specify where the data comes from.
  • Remove "ease" and "delay" \\ transition delays

Signals

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Signals change the datapoints based on mouse movements, such as hovering over a bar.

  • "name" is required
  • change "verbose" to "react"
  • change "streams" to "on"
  • change "expr" to "update"
  • change "init" to "value" or "update". Value if there is only one value, "update" if there is more.
  • view.on to view.addEventListener
  • view.off to view.removeEventListener
  • view.onSignal to view.addSignalListener
  • view.offSignal to view.removeSignalListener


Expressions

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  • Change inrange to lua, something like "if x < math.max and x > math.min"
  • change format to tostring in lua
  • timeformat to timeOffset?
timeOffset(unit, date[, step]), step=timezone
  • eventItem to item
  • eventgroup to group
  • eventx to x
  • eventy to y

Removed sections

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Tools

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