calculateSliceArgsRequestImage()

function calculateSliceArgsRequestImage(
   shape, 
   dataSlice, 
   dimIndices, 
   selectors): SliceArgs;

Constructs Zarr slice arguments for extracting a subregion of a multidimensional array.

This function:

Converts geographic / elevation slice ranges into Zarr slice objects.
Converts value-based selectors (e.g. {type: "value", selected: 2020}) into nearest index selectors.
Optionally loads dimension coordinate arrays for the selected slice.
Produces a new selector map describing index-based selections.

Parameters

Parameter	Type	Description
`shape`	`number`[]	Full array shape.
`dataSlice`	`DataSliceProps`	Pixel-space slice ranges `{ startX, endX, startY, endY, startElevation?, endElevation? }` (see DataSliceProps).
`dimIndices`	`DimIndicesProps`	Mapping of dimension names → indices as returned by `identifyDimensionIndices` (see DimIndicesProps).
`selectors`	{ [`key`: `string`]: `ZarrSelectorsProps`; }	User-provided selection map (lat/lon/elevation/time/etc.). See ZarrSelectorsProps.

An object containing:

sliceArgs: Array of slice objects/indexes matching the array's dimensions. See SliceArgs.
dimensionValues: Possibly updated coordinate arrays.
selectors: Updated index-based selectors. See ZarrSelectorsProps.