CODEWITHSUNDEEP
d3.jsvegavega-litealtair
Mike Eglington
Mike Eglington

Reputation: 41

Specify aspect ratio / equal scales on Vegalite plot

On an Vegalite xy chart, how do I specify the data aspect ratio to 1? In other words, I want the same scaling from data to plot units for both x and y axes. In Matplotlib this is achieved with matplotlib.axes.Axes.set_aspect('equal'). How would I modify the following spec snippet?

{
  "width": 500,
  "height": 500
  "mark": {"type": "line", "point": {"size": 0}},
  "encoding": {
    "x": {"field": "y", "type": "quantitative"},
    "y": {"field": "x", "type": "quantitative"},
    "color": {
      "field": "run",
      "type": "nominal",
      "scale": {"scheme": "magma"}
    }
  }
}

Upvotes: 2

Views: 698

Answers (1)

James Draper
James Draper

Reputation: 5310

Vega-lite and altair don't have an aspect argument or set_aspect method like in matplotlib. I had a same question earlier this week and this is the answer that I got from one of the devs;

It’s definitely possible to change the width/height of a figure, which is almost the same thing See https://altair-viz.github.io/gallery/aggregate_bar_chart.html for an example

So as long as your width and height have the same value then by default the aspect will also be equal.

Upvotes: 1

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