是否可以在 Vega-Lite 上编写 Latex？

Question

我想在 Latex 表达式中使用“文本”标记，并使用 Vega-Lite 绘制它。这可能吗？例如：

data = {x:[0,1,2,3],y:[0,1,2,3],t=["x^0","x^1","x^2","x^3"]}
{
  "data":data
  }],
  "mark": "text",
  "encoding": {
    "x": {"field": "x", "type": "quantitative"},
    "y": {"field": "y", "type": "quantitative"},
    "text": {"field": "t", "type": "nominal"}
  }
}

Answer 1

不，Vega-Lite 规范不支持 LaTeX 数学（相关功能请求是 here）。但是对于像您示例中的简单数学表达式，您通常可以使用 unicode 文本来表示它们：

{
  "data":{
    "values": [
      {"x": 0, "t": "x⁰"},
      {"x": 1, "t": "x¹"},
      {"x": 2, "t": "x²"},
      {"x": 3, "t": "x³"}
    ]
  },
  "mark": "text",
  "encoding": {
    "x": {"field": "x", "type": "quantitative"},
    "y": {"field": "x", "type": "quantitative"},
    "text": {"field": "t", "type": "nominal"}
  }
}