Struct grib::PolarStereographicGridDefinition

source ·

pub struct PolarStereographicGridDefinition {
    pub earth_shape: EarthShapeDefinition,
    pub ni: u32,
    pub nj: u32,
    pub first_point_lat: i32,
    pub first_point_lon: i32,
    pub lad: i32,
    pub lov: i32,
    pub dx: u32,
    pub dy: u32,
    pub projection_centre: ProjectionCentreFlag,
    pub scanning_mode: ScanningMode,
}

Fields§

§earth_shape: EarthShapeDefinition§ni: u32§nj: u32§first_point_lat: i32§first_point_lon: i32§lad: i32§lov: i32§dx: u32§dy: u32§projection_centre: ProjectionCentreFlag§scanning_mode: ScanningMode

Implementations§

source §

impl PolarStereographicGridDefinition

source

pub fn grid_shape(&self) -> (usize, usize)

Returns the shape of the grid, i.e. a tuple of the number of grids in the i and j directions.

Examples

let def = grib::PolarStereographicGridDefinition {
    earth_shape: grib::EarthShapeDefinition {
        shape_of_the_earth: 6,
        scale_factor_of_radius_of_spherical_earth: 0xff,
        scaled_value_of_radius_of_spherical_earth: 0xffffffff,
        scale_factor_of_earth_major_axis: 0xff,
        scaled_value_of_earth_major_axis: 0xffffffff,
        scale_factor_of_earth_minor_axis: 0xff,
        scaled_value_of_earth_minor_axis: 0xffffffff,
    },
    ni: 2,
    nj: 3,
    first_point_lat: 0,
    first_point_lon: 0,
    lad: 0,
    lov: 0,
    dx: 1000,
    dy: 1000,
    projection_centre: grib::ProjectionCentreFlag(0b00000000),
    scanning_mode: grib::ScanningMode(0b01000000),
};
let shape = def.grid_shape();
assert_eq!(shape, (2, 3));

source

pub fn short_name(&self) -> &'static str

Returns the grid type.

source

pub fn ij(&self) -> Result<GridPointIndexIterator, GribError>

Returns an iterator over (i, j) of grid points.

Note that this is a low-level API and it is not checked that the number of iterator iterations is consistent with the number of grid points defined in the data.

Examples

let def = grib::PolarStereographicGridDefinition {
    earth_shape: grib::EarthShapeDefinition {
        shape_of_the_earth: 6,
        scale_factor_of_radius_of_spherical_earth: 0xff,
        scaled_value_of_radius_of_spherical_earth: 0xffffffff,
        scale_factor_of_earth_major_axis: 0xff,
        scaled_value_of_earth_major_axis: 0xffffffff,
        scale_factor_of_earth_minor_axis: 0xff,
        scaled_value_of_earth_minor_axis: 0xffffffff,
    },
    ni: 2,
    nj: 3,
    first_point_lat: 0,
    first_point_lon: 0,
    lad: 0,
    lov: 0,
    dx: 1000,
    dy: 1000,
    projection_centre: grib::ProjectionCentreFlag(0b00000000),
    scanning_mode: grib::ScanningMode(0b01000000),
};
let ij = def.ij();
assert!(ij.is_ok());

let mut ij = ij.unwrap();
assert_eq!(ij.next(), Some((0, 0)));
assert_eq!(ij.next(), Some((1, 0)));
assert_eq!(ij.next(), Some((0, 1)));