Struct grib::LatLonGridDefinition

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pub struct LatLonGridDefinition {
    pub ni: u32,
    pub nj: u32,
    pub first_point_lat: i32,
    pub first_point_lon: i32,
    pub last_point_lat: i32,
    pub last_point_lon: i32,
    pub scanning_mode: ScanningMode,
}

Fields§

§ni: u32§nj: u32§first_point_lat: i32§first_point_lon: i32§last_point_lat: i32§last_point_lon: i32§scanning_mode: ScanningMode

Implementations§

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impl LatLonGridDefinition

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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::LatLonGridDefinition {
    ni: 2,
    nj: 3,
    first_point_lat: 0,
    first_point_lon: 0,
    last_point_lat: 2_000_000,
    last_point_lon: 1_000_000,
    scanning_mode: grib::ScanningMode(0b01000000),
};
let shape = def.grid_shape();
assert_eq!(shape, (2, 3));

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

Returns the grid type.

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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::LatLonGridDefinition {
    ni: 2,
    nj: 3,
    first_point_lat: 0,
    first_point_lon: 0,
    last_point_lat: 2_000_000,
    last_point_lon: 1_000_000,
    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)));

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pub fn latlons(&self) -> Result<RegularGridIterator, GribError>

Returns an iterator over latitudes and longitudes of grid points in degrees.

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::LatLonGridDefinition {
    ni: 2,
    nj: 3,
    first_point_lat: 0,
    first_point_lon: 0,
    last_point_lat: 2_000_000,
    last_point_lon: 1_000_000,
    scanning_mode: grib::ScanningMode(0b01000000),
};
let latlons = def.latlons();
assert!(latlons.is_ok());

let mut latlons = latlons.unwrap();
assert_eq!(latlons.next(), Some((0.0, 0.0)));
assert_eq!(latlons.next(), Some((0.0, 1.0)));
assert_eq!(latlons.next(), Some((1.0, 0.0)));