Model - tables[]

Every method of the tables[] lane. Each step of a tables[] entry returns a table, and the lane's entries are addressed by the identity schema/lanes.ts declares for it.

Method	Description	Arg	Type	Default	Meaning
`column`	Column — Header node — declares one column (columns[], never operations[]). The node's own key IS the column key.	`type`	`string`	`''`	Display type hint for the cell values.
		`format`	`string`	`''`	Display format hint (e.g. a number format).
		`value`	`function`		`(row) =>` computed column — derives this cell from the rest of the row.
`row`	Row — Producer — one literal row. Arg keys are free-form: each one is a CELL, named after the column it fills, and its input is an ordinary expression.
`tableAddRow`	Add Row — Transform — append one computed row (a totals line, say) built from the rows already in the stream.	`compute`	`function`		`(rows) =>` returning the new row object.
`tableAnalyze`	Analyze — Chain head — a sweep / optimize / monteCarlo run PERSISTED as a live table. Always runs against a fresh detached copy of the model.	`mode`	`string`	`'sweep'`	Which analysis to run.
		`parameters`	`object`	`[]`	Parameter ranges to explore.
		`measures`	`object`	`[]`	Measured outputs to record per run.
		`objective`	`string`	`''`	Measure name to optimize (optimize mode).
		`goal`	`string`	`'min'`	Optimize toward the minimum or maximum.
		`maxEvaluations`	`number`	`100`	Evaluation budget (optimize mode).
		`samples`	`number`	`100`	Sample count (monteCarlo mode).
		`seed`	`number`	`1`	Deterministic sampling seed — the same seed always produces the same rows.
`tableFilter`	Filter Rows — Transform — keep only the rows the predicate accepts.	`keep`	`function`	`(row) => true`	`(row) =>` truthy to keep the row.
`tableGroup`	Group Rows — Transform — collapse rows sharing the `by` keys into one row per group, aggregating the remaining columns.	`by`	`string[]`	`[]`	Column keys to group on.
		`aggregate`	`object`		Per-column aggregation, e.g. { qty: 'sum' }.
`tableJoin`	Join — Transform — merge columns from another tables[] chain onto matching rows.	`source`	`string`	`''`	tables[] chain key to join against (quote literals).
		`on`	`object`		Key mapping, e.g. { sku: 'code' }.
		`type`	`string`	`'inner'`	Join type.
`tableSheets`	Sheet Index — Chain head — one row per sheets[] entry, read from the lane's HEADERS only (never a sheet body), so a drawing index may sit on a sheet it lists.	`fields`	`string[]`	`['key', 'title']`	Header fields to emit per sheet.
`tableSort`	Sort Rows — Transform — order the row set by one column.	`by`	`string`	`''`	Column key to sort on.
		`descending`	`binary`	`0`	1 = high to low.
`tableSource`	Scene Source — Chain head — one row per scene entity. `entities` empty scans the WHOLE scene (a lazy sceneFrame pull); non-empty narrows to an explicit reference.	`entities`	`entity[]`	`[]`	Explicit entity reference to report on. Empty = scan the whole scene.
		`type`	`string[]`	`[]`	Scene-entity types to keep (empty = all).
		`fields`	`string[]`	`[]`	Columns to emit per entity (empty = the default field set).
`tableUnion`	Union — Transform — append another tables[] chain's rows to this one.	`source`	`string`	`''`	tables[] chain key whose rows are appended (quote literals).

Last updated: August 16, 2026📖 3 min readEdit on GitHub

Model - tables[]#

Model - tables[]