GLASS sinusoidal tile lookup table

The global 36 x 18 ordered grid used by tiled GLASS products (equivalent to the MODIS sinusoidal tile system). Each row holds the WGS84 geographic bounding box of one tile; tiles outside the projection footprint carry NA bounds and valid = FALSE.

h is the horizontal tile index (0-35, west to east) and v is the vertical index (0-17, north to south). Tiles are referenced in file names and archive paths as h<h>v<v>, e.g. h28v05.

The source table was produced by projecting the bounding rectangles of the sinusoidal tiles (+proj=sinu with sphere radius 6371007.181, tile width and height 1111950.51966667 m) to WGS84; see the original glass_tiles.tsv in data-raw/. Bounds are those of the curved tile polygons, so a strict bounding-box intersection test may slightly over-select corner tiles. Use glass_tiles_for_bbox() or glass_tiles_for_sf() for exact selection.

Usage

data(glass_tiles)

Format

A tibble with 648 rows and 7 columns:

h

Horizontal tile index \(0-35\)

v

Vertical tile index \(0-17\)

lon_min, lon_max, lat_min, lat_max

WGS84 bounds of the tile; NA if not covered by the projection

valid

TRUE when the tile lies inside the sinusoidal footprint