Enum GeoidModel 

pub enum GeoidModel {
    Egm96,
    Egm2008,
}

Identifier for a known global geoid model.

EGM96 (15’×15’ grid, ~5 cm RMS over land) and EGM2008 (1’×1’ or 2.5’×2.5’ grids, ~1 cm RMS over land) are the most widely used global models.

Variants

Egm96

Earth Gravitational Model 1996 (NGA / NASA).

Egm2008

Earth Gravitational Model 2008 (NGA).

Implementations

impl GeoidModel

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

Returns the canonical short display name ("EGM96", "EGM2008").

pub fn default_grid_spacing_deg(&self) -> f64

Returns a reasonable default grid spacing in degrees.

Both models support multiple grid resolutions; this returns a coarse value (0.25° = 15’) suitable for synthetic-grid tests and for sizing expectations when no metadata is provided.

pub fn approx_accuracy_cm(&self) -> f64

Returns the approximate accuracy of the model over land (centimetres).

Trait Implementations

impl Clone for GeoidModel

fn clone(&self) -> GeoidModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for GeoidModel

impl Debug for GeoidModel

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

Formats the value using the given formatter.

impl Display for GeoidModel

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

Formats the value using the given formatter.

impl Eq for GeoidModel

impl Hash for GeoidModel

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GeoidModel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for GeoidModel