WcsSampler

class toasty.samplers.WcsSampler(data, wcs)

Bases: object

Create a sampler for data with a generic WCS specification.

The sampler returns values in float32, regardless of input data type.

Parameters:

dataarray

The image data.

wcsastropy.wcs.WCS

A WCS data structure describing the data.

Returns:

A function that samples the data; the call signature is

vec2pix(lon, lat)-> data, where the inputs and output are 2D arrays

and lon and lat are in radians.

Methods Summary

filter()	Get a TOAST tile-filter function for the specified chunk.
sampler()

Methods Documentation

filter()

Get a TOAST tile-filter function for the specified chunk.

Returns:

A callable object, filter(tile) -> bool, suitable for use as a tile

filter function.

sampler()