eoio.readers.flex.grid module

eoio.readers.flex.grid module#

eoio.readers.flex.grid#

Product grid of a FLEX product, derived from the global GeoTransform and spatial_ref attributes (the product has no x/y coordinate variables). The CRS differs between products (the UTM zone follows the scene), so it is always read from the file.

Classes#

FlexGrid(x0, y0, dx, dy, nx, ny, crs)

North-up regular grid in a projected CRS.
class eoio.readers.flex.grid.FlexGrid(x0: float, y0: float, dx: float, dy: float, nx: int, ny: int, crs: str)[source]#

Bases: object

North-up regular grid in a projected CRS.

Parameters:

  • x0 – x coordinate of the upper-left corner of the upper-left pixel.

  • y0 – y coordinate of the upper-left corner of the upper-left pixel.

  • dx – pixel width (positive).

  • dy – pixel height (positive, y decreases with row index).

  • nx – number of columns.

  • ny – number of rows.

  • crs – CRS as a string, e.g. "EPSG:32631".

property bounds: Tuple[float, float, float, float]#

Outer (xmin, ymin, xmax, ymax) bounds in the grid CRS.

crs: str#
dx: float#
dy: float#
property epsg: int#

EPSG code of the grid CRS.

classmethod from_attrs(attrs: Mapping[str, Any], nx: int, ny: int) → FlexGrid[source]#

Build from the global attributes of a FLEX product.

Parameters:

  • attrs – global attributes (must contain GeoTransform and spatial_ref).

  • nx – size of the easting dimension.

  • ny – size of the northing dimension.

Raises:

ValueError – if the grid attributes are missing or the grid is rotated/south-up.

nx: int#
ny: int#
property x: ndarray#

Pixel-centre easting coordinates.

x0: float#
property y: ndarray#

Pixel-centre northing coordinates (decreasing).

y0: float#