Struct WCSProj

pub struct WCSProj { /* private fields */ }

Implementations

impl WCSProj

pub fn new(naxis1: i64, naxis2: i64, params: &WCSParams) -> Result<Self, Error>

Create a WCS from a specific fits header parsed with fitsrs

Param

• naxis1 - Size of the image in its first dimension (in pixels)
• naxis2 - Size of the image in its second dimension (in pixels)
• params - Header unit coming from fitsrs. This contains all the cards of one HDU.

pub fn proj_lonlat(&self, lonlat: &LonLat) -> Option<ImgXY>

Project a (lon, lat) given in ICRS frame to get its corresponding location on the image

The result is given a (X, Y) tuple expressed in pixel coordinates.

Arguments

• lonlat: a coo expressed as (lon, lat) tuple given in degrees and in ICRS system

pub fn proj_xyz(&self, xyz: &(f64, f64, f64)) -> Option<ImgXY>

pub fn unproj_xyz(&self, img_pos: &ImgXY) -> Option<XYZ>

pub fn unproj_lonlat(&self, img_pos: &ImgXY) -> Option<LonLat>

Unproject a (X, Y) point from the image space to get its corresponding location on the sphere

The result is (lon, lat) tuple expressed in degrees in ICRS

Arguments

• img_pos: the image space point expressed as a (X, Y) tuple given en pixels

pub fn coo_system(&self) -> &CooSystem

Getter of the coordinate system

Trait Implementations

impl Debug for WCSProj

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

Formats the value using the given formatter.