| Purpose |`ggplot2`|`Observable Plot`| | -------| --------- | ---------- | |Initialize the plot

Specify geom or mark
From which dataset?
Variable mappings
Mark color
Mark shape
Mark opacity (constant)
Mark size (constant)

Reveal legend

Axis labels

Add gridlines | `ggplot()`  ` + `

  `geom_point``(``penguins``,`
    `aes(x = flipper_length_mm,`
           `y = body_mass_g,`
           `color = species,`
           `shape = species``),`
    `alpha = 0.7,`
    `size = 4`
    `) +`

  `# N/A: legends revealed by default`
    `+`
  `labs(x = "Flipper length (mm)",`
             `y = "Body mass (g)")`

  `# N/A: gridlines added by default`| `Plot.plot``({`

  `marks: [`
      `Plot.dot``(``penguins``,`
         `{x: "flipper_length_mm",`
          `y: "body_mass_g",`
          `fill: "species",`
          `symbol: "species"`
          `opacity: 0.7`
          `r: 4``})`
      `]`

  `symbol: {legend: true},`

  `x: {label: "Flipper length (mm)"},`
  `y: {label: "Body mass (g)"},`

  `grid: true`

`})`