30:T409,

Observable Plot › Marks › Box · API

# Box Plot The box mark creates a horizontal or vertical boxplot, a type of visual summary for one-dimensional distributions. The box mark is implemented as a composite mark: it is an array of marks consisting of a [rule](/@observablehq/plot-rule) to represent the extreme values (not including outliers), a [bar](/@observablehq/plot-bar) to represent the interquartile range (trimmed to the data), a [tick](/@observablehq/plot-tick) to represent the median value, and a [dot](/@observablehq/plot-dot) to represent outliers, if any. The box mark uses the [group transform](/@observablehq/plot-group) to group and aggregate data.31:[{"id":"acdb539785511895ff780946e2f870005c718d1f63ecda757414220af0582ba177a2b5e7c44a5dd544a07b85a3f0195f9f3bee5195d36ca4e922515f62f6bcb9","href":"https://static.observableusercontent.com/files/acdb539785511895ff780946e2f870005c718d1f63ecda757414220af0582ba177a2b5e7c44a5dd544a07b85a3f0195f9f3bee5195d36ca4e922515f62f6bcb9","name":"morley.csv","type":"text/csv","lastModified":1608082962995.072,"size":874}] 2e:{"title":"Box Mark / Observable Plot","cells":[{"id":0,"value":"$30","pinned":false,"hidden":false,"mode":"md"},{"id":6,"value":"morley = FileAttachment(\"morley.csv\").csv({typed: true})","pinned":true,"hidden":false,"mode":"ojs"},{"id":44,"value":"Plot.plot({\n y: {\n grid: true,\n inset: 6\n },\n marks: [\n Plot.boxY(morley, {x: \"Expt\", y: \"Speed\"})\n ]\n})","pinned":true,"hidden":false,"mode":"ojs"},{"id":15,"value":"Plot.plot({\n x: {\n grid: true,\n inset: 6\n },\n marks: [\n Plot.boxX(morley, {x: \"Speed\", y: \"Expt\"})\n ]\n})","pinned":true,"hidden":false,"mode":"ojs"},{"id":184,"value":"Plot.boxY groups by *x*, if present, while Plot.boxX groups by *y*, if present. If not present, a single box is generated. As [shorthand](/@observablehq/plot-shorthand), you can pass an array of numbers to Plot.boxX or Plot.boxY.","pinned":false,"hidden":false,"mode":"md"},{"id":189,"value":"Plot.boxX([0, 3, 4.4, 4.5, 4.6, 5, 7]).plot()","pinned":true,"hidden":false,"mode":"ojs"},{"id":203,"value":"Next \nAPI Reference","pinned":false,"hidden":false,"mode":"md"},{"id":53,"value":"---\n\n## Appendix\n\nThe aliases below are retained for backwards compatibility.","pinned":false,"hidden":false,"mode":"md"},{"id":26,"value":"boxX = Plot.boxX","pinned":true,"hidden":false,"mode":"ojs"},{"id":42,"value":"boxY = Plot.boxY","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}