Enum GridDefinition 

#[non_exhaustive]
pub enum GridDefinition {
    LatLon(LatLonGrid),
    RotatedLatLon(RotatedLatLonGrid),
    Mercator(MercatorGrid),
    AlbersEqualArea(AlbersEqualAreaGrid),
    LambertConformal(LambertConformalGrid),
    PolarStereographic(PolarStereographicGrid),
    RegularGaussian(RegularGaussianGrid),
    Unsupported(u16),
}

Grid definition extracted from Section 3.

This enum is non-exhaustive because GRIB grid templates are open-ended: WMO can add standard templates and centers can use local templates. Prefer the query helpers on this type for common behavior, or keep a wildcard arm when matching specific grid families.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

LatLon(LatLonGrid)

Template 3.0: Regular latitude/longitude (equidistant cylindrical).

RotatedLatLon(RotatedLatLonGrid)

Template 3.1: Rotated latitude/longitude.

Mercator(MercatorGrid)

Template 3.10: Mercator.

AlbersEqualArea(AlbersEqualAreaGrid)

Template 3.31: Albers equal-area.

LambertConformal(LambertConformalGrid)

Template 3.30: Lambert conformal.

PolarStereographic(PolarStereographicGrid)

Template 3.20: Polar stereographic projection.

RegularGaussian(RegularGaussianGrid)

Template 3.40: Regular Gaussian latitude/longitude.

Unsupported(u16)

Unsupported template (stored for diagnostics).

Implementations

impl GridDefinition

pub fn template_number(&self) -> u16

GRIB2 grid definition template number for typed templates.

Unsupported stores the unhandled template number from the source message for diagnostics.

pub fn as_lat_lon(&self) -> Option<&LatLonGrid>

pub fn as_rotated_lat_lon(&self) -> Option<&RotatedLatLonGrid>

pub fn as_regular_gaussian(&self) -> Option<&RegularGaussianGrid>

pub fn as_polar_stereographic(&self) -> Option<&PolarStereographicGrid>

pub fn as_mercator(&self) -> Option<&MercatorGrid>

pub fn as_lambert_conformal(&self) -> Option<&LambertConformalGrid>

pub fn as_albers_equal_area(&self) -> Option<&AlbersEqualAreaGrid>

pub fn projected_core(&self) -> Option<&ProjectedGridCore>

pub fn unsupported_template(&self) -> Option<u16>

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

pub fn scanning_mode(&self) -> Option<u8>

Returns the grid’s Code Table 3.4 scanning-mode byte.

pub fn scan_line_shape(&self) -> Result<(usize, usize), Error>

Returns (points_per_scan_line, number_of_scan_lines).

This is the grouping geometry used by GRIB1 row-by-row second-order packing and GRIB2 complex-packing group splitting method 0.

pub fn shape_num_points(&self) -> Result<usize, Error>

pub fn ndarray_shape(&self) -> Vec<usize>

pub fn num_points(&self) -> usize

pub fn checked_num_points(&self) -> Result<usize, Error>

pub fn declared_num_points(&self) -> Option<usize>

pub fn latitudes(&self) -> Result<Option<Vec<f64>>, Error>

One-dimensional latitude axis for unrotated geographic grids.

pub fn latitudes_with_limit( &self, max_axis_points: Option<usize>, ) -> Result<Option<Vec<f64>>, Error>

pub fn longitudes(&self) -> Result<Option<Vec<f64>>, Error>

One-dimensional longitude axis for unrotated geographic grids.

pub fn longitudes_with_limit( &self, max_axis_points: Option<usize>, ) -> Result<Option<Vec<f64>>, Error>

pub fn projected_x_coordinates(&self) -> Result<Option<Vec<f64>>, Error>

Projected x coordinates in metres relative to the first grid point.

Regular latitude/longitude grids return None; use LatLonGrid::longitudes for those grids.

pub fn projected_x_coordinates_with_limit( &self, max_axis_points: Option<usize>, ) -> Result<Option<Vec<f64>>, Error>

pub fn projected_y_coordinates(&self) -> Result<Option<Vec<f64>>, Error>

Projected y coordinates in metres relative to the first grid point.

Regular latitude/longitude grids return None; use LatLonGrid::latitudes for those grids.

pub fn projected_y_coordinates_with_limit( &self, max_axis_points: Option<usize>, ) -> Result<Option<Vec<f64>>, Error>

pub fn validate_supported_scan_order(&self) -> Result<(), Error>

pub fn reorder_for_ndarray_in_place<T>( &self, values: &mut [T], ) -> Result<(), Error>

Converts GRIB scan traversal into row-major order by undoing alternating row scans. The encoded i/j direction is deliberately preserved.

pub fn normalize_north_up_in_place<T>( &self, values: &mut [T], ) -> Result<(), Error>

Converts GRIB scan traversal to deterministic row-major orientation: columns increase in +i order and rows increase in -j order (north to south for conventional geographic grids).

pub fn parse(section_bytes: &[u8]) -> Result<GridDefinition, Error>

Trait Implementations

impl Clone for GridDefinition

fn clone(&self) -> GridDefinition

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GridDefinition

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for GridDefinition

fn eq(&self, other: &GridDefinition) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for GridDefinition