# `Sidereon.Geoid.Egm2008GridSpacing`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/geoid.ex#L27)

Supported NGA EGM2008 interpolation-raster spacings.

# `t`

```elixir
@type t() ::
  :one_minute
  | :one_minute_grid
  | :two_point_five_minute
  | :two_point_five_minute_grid
  | String.t()
```

EGM2008 raster spacing token.

# `arc_minutes`

```elixir
@spec arc_minutes(t()) :: float()
```

Return the spacing in arcminutes.

# `degrees`

```elixir
@spec degrees(t()) :: float()
```

Return the spacing in degrees.

# `global_dimensions`

```elixir
@spec global_dimensions(t()) :: {pos_integer(), pos_integer()}
```

Return official `{n_lat, n_lon}` global raster dimensions.

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*Consult [api-reference.md](api-reference.md) for complete listing*