ContourLayer | deck.gl

The ContourLayer aggregates data into iso-lines or iso-bands for a given threshold and cell size. Isoline represents collection of line segments that separate the area above and below a given threshold. Isoband represents a collection of polygons (filled) that fill the area containing values in a given threshold range. To generate an Isoline single threshold value is needed, to generate an Isoband an array with two values needed. Data is first aggregated using given cell size and resulting scalar field is used to run Marching Squares algorithm that generates a set of vertices to form Isolines or Isobands. In below documentation Isoline and Isoband is referred as contour.