Enum DistanceTypes

#[repr(C)]
pub enum DistanceTypes {
    DIST_USER = -1,
    DIST_L1 = 1,
    DIST_L2 = 2,
    DIST_C = 3,
    DIST_L12 = 4,
    DIST_FAIR = 5,
    DIST_WELSCH = 6,
    DIST_HUBER = 7,
}

Distance types for Distance Transform and M-estimators

See also

distanceTransform, fitLine

Variants

DIST_USER = -1

User defined distance

DIST_L1 = 1

distance = |x1-x2| + |y1-y2|

DIST_L2 = 2

the simple euclidean distance

DIST_C = 3

distance = max(|x1-x2|,|y1-y2|)

DIST_L12 = 4

L1-L2 metric: distance = 2(sqrt(1+x*x/2) - 1))

DIST_FAIR = 5

distance = c^2(|x|/c-log(1+|x|/c)), c = 1.3998

DIST_WELSCH = 6

distance = c^2/2(1-exp(-(x/c)^2)), c = 2.9846

DIST_HUBER = 7

distance = |x|<c ? x^2/2 : c(|x|-c/2), c=1.345

Trait Implementations

impl Clone for DistanceTypes

fn clone(&self) -> DistanceTypes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DistanceTypes

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

Formats the value using the given formatter.

impl From<DistanceTypes> for i32

fn from(v: DistanceTypes) -> Self

Converts to this type from the input type.

impl PartialEq for DistanceTypes

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<i32> for DistanceTypes

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for DistanceTypes

impl Eq for DistanceTypes

impl StructuralPartialEq for DistanceTypes