Transform (gdal.Gdal.Transform)

type data_t = (float, Bigarray.float64_elt, Bigarray.c_layout) Bigarray.Array1.t

Input coordinates are provided as bigarrays.

type result_t = (int, Bigarray.int_elt, Bigarray.c_layout) Bigarray.Array1.t option

Success/failure of coordinate transformations.

type 'a t

Transformation

val make_gen_img : ?⁠gcp:(bool * int) ‑> [ `data_set of Data_set.t * Data_set.t | `wkt of (string * Geo_transform.t) * (string * Geo_transform.t) | `data_set_wkt of Data_set.t * string | `wkt_data_set of string * Data_set.t ] ‑> image t

make_gen_img ?gcp kind creates a transformation defined by kind.

Options for kind:

`data_set (src, dst)
`wkt ((src_wkt, src_geo_transform), (dst_wkt, dst_geo_transform))uses GDALCreateGenImgTransformer3 internally, gcp is ignored
`data_set_wkt (src, (dst_wkt, dst_geo_transform))
`wkt_data_set (src_wkt, dst)

Parameter gcp: defaults to (true, 0). See GDAL's GDALCreateGenImgProjTransformer documentation for an explanation of how GCPs may be used.

val set_dst_geo_transform : image t ‑> Geo_transform.t ‑> unit

set_dst_geo_transform t gt sets the destination geo transform matrix in t.

val make_reprojection : src:string ‑> dst:string ‑> reprojection t

make_reprojection ~src ~dst creates a transformation definition between the WKT definition in src and the WKT definition in dst.

val transform : _ t ‑> bool ‑> data_t ‑> data_t ‑> data_t ‑> result_t

transform t invert xs ys zs converts the coordinates xs, ys, zs according to the transformation defined in t.

Parameter invert: reverses the direction of the transformation t.
Parameter xs: is modified in place with the transformation result.
Parameter ys: is modified in place with the transformation result.
Parameter zs: is modified in place with the transformation result.
Returns Some success where success is an array of values indicating whether an individual point's transformation is successful or not. None is returned if the overall transformation fails.