iyApplyUnit

Workspace.iyApplyUnit(self: pyarts.arts._Workspace, iy: pyarts.arts.WorkspaceVariable | pyarts.arts.Matrix | None = self.iy, iy_aux: pyarts.arts.WorkspaceVariable | pyarts.arts.ArrayOfMatrix | None = self.iy_aux, stokes_dim: pyarts.arts.WorkspaceVariable | pyarts.arts.Index | None = self.stokes_dim, f_grid: pyarts.arts.WorkspaceVariable | pyarts.arts.Vector | None = self.f_grid, iy_aux_vars: pyarts.arts.WorkspaceVariable | pyarts.arts.ArrayOfString | None = self.iy_aux_vars, iy_unit: pyarts.arts.WorkspaceVariable | pyarts.arts.String | None = self.iy_unit, verbosity: pyarts.arts.WorkspaceVariable | pyarts.arts.Verbosity | None = self.verbosity) → None

Conversion of iy to other spectral units (for passive observations).

The method allows a change of unit, as a post-processing step, ignoring the n2-law of radiance.

The conversion made inside iyEmissionStandard() is mimiced, see that method for constraints and selection of output units. Restricted to that the n2-law can be ignored. This assumption is valid if the sensor is placed in space, or if the refractive index only deviates slightly from unity.

It is stressed that there is no automatic check that the method is applied correctly, it is up to the user to ensure that the input data are suitable for the conversion.

Beside iy, these auxilary quantities are modified:

“iy”, “Error” and “Error (uncorrelated)”

Please note that diy_dx is not handled. Also note that this method considers iy_unit, while iy_unit_radar is handled directly by the methods dealing with such simulations.

Author(s): Patrick Eriksson

Parameters:

  • iy (Matrix, optional) – Monochromatic pencil beam radiance spectrum. See iy, defaults to self.iy [INOUT]

  • iy_aux (ArrayOfMatrix, optional) – Data auxiliary to iy. See iy_aux, defaults to self.iy_aux [INOUT]

  • stokes_dim (Index, optional) – The dimensionality of the Stokes vector (1-4). See stokes_dim, defaults to self.stokes_dim [IN]

  • f_grid (Vector, optional) – The frequency grid for monochromatic pencil beam calculations. See f_grid, defaults to self.f_grid [IN]

  • iy_aux_vars (ArrayOfString, optional) – Selection of quantities for iy_aux and when applicable also y_aux. See iy_aux_vars, defaults to self.iy_aux_vars [IN]

  • iy_unit (String, optional) – Selection of output unit for radiative transfer methods. See iy_unit, defaults to self.iy_unit [IN]

  • verbosity (Verbosity) – ARTS verbosity. See verbosity, defaults to self.verbosity [IN]