ARTS built-in documentation server

Workspace Variable ppath

The propagation path for one line-of-sight.

This variable describes the total (pencil beam) propagation path for
a given combination of starting point and line-of-sight. The path is
described by a data structure of type Ppath. This structure contains
also additional fields to faciliate the calculation of spectra and
interpolation of the atmospheric fields.

The data struture is too extensive to be described here, but it is
described carefully in the ARTS user guide (AUG). Use the index to
find where the data structure, Ppath, for propagation paths is 
discussed. It is listed as a subentry to "data structures".

Usage: Output from ppath_agenda.

Group: Ppath

Specific methods that can generate ppath

• iyCalc
• iyIndependentBeamApproximation
• iyLoopFrequencies
• ppathCalc
• ppathCalcFromAltitude
• ppathFromRtePos2
• ppathPlaneParallel
• ppathStepByStep

Generic and supergeneric methods that can generate ppath

• PpathCreate
• Copy
• ReadXML
• ReadXMLIndexed
• Touch

Specific methods that require ppath

• geo_posEndOfPpath
• geo_posLowestAltitudeOfPpath
• geo_posWherePpathPassesZref
• iyActiveSingleScat
• iyActiveSingleScat2
• iyEmissionStandard
• iyEmissionStandardSequential
• iyHybrid
• iyHybrid2
• iyTransmissionStandard
• ppathWriteXMLPartial
• rte_pos_losMoveToStartOfPpath
• TangentPointExtract
• TangentPointPrint

Generic and supergeneric methods that can use ppath

• Append
• Copy
• Delete
• Ignore
• Print
• WriteXML
• WriteXMLIndexed

Agendas that can generate ppath

• iy_independent_beam_approx_agenda
• iy_loop_freqs_agenda
• iy_main_agenda
• ppath_agenda

Agendas that require ppath

• geo_pos_agenda