# API Documentation¶

## pvextractor Package¶

This is an Astropy affiliated package.

### Functions¶

 extract_pv_slice(cube, path[, wcs, spacing, ...]) Given a position-position-velocity cube with dimensions (nv, ny, nx), and a path, extract a position-velocity slice. paths_from_regfile(regfile) Given a ds9 region file, extract pv diagrams for each: slice_wcs(wcs, spatial_scale) Slice a WCS header for a spectral cube to a Position-Velocity WCS, with test([package, test_path, args, plugins, ...]) Run the tests using py.test.

### Classes¶

 Path(xy_or_coords[, width]) A curved path that may have a non-zero width and is used to extract slices from cubes. PathFromCenter(center[, length, angle, ...]) A simple path defined by a center, length, and position angle.