Creating and maintaining the local HITRAN database cache

The local HITRAN database cache is stored using the SQLite format. You can directly use and manipulate this database in order to filter for specific properties. In future versions some easy-to-use Julia filter functions will be added. For now you can create a view on a table (or multiple tables) and store them as a view which can be used by the α function as a source table.

Basic database usage

HITRAN.open_database — Method

open_database(file_path::String)

Opens the SQLite database at the given file path and sets it as the current database. Only use this if you want to use multiple different database.

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HITRAN.fetch! — Function

fetch!([db,] name, global_ids, ν_min, ν_max, parameters)

Fetches new data from HITRANonline and stores it in the current database in the table given by name. If the table with the given parameters already exists, no data download will be initiated.

Arguments

db: The database to use for storage (optional)
name: The table name which can subsequently used as source table for the α function
global_ids: The global isotopologue ids to consider. You can also provide a tuple (or an array of tuples) with molecule_id, local_id as identifiers
ν_min: The minimum wavenumber in $cm^{-1}$ to consider
ν_max: The minimum wavenumber in $cm^{-1}$ to consider
parameters: A list of parameters to fetch. You can use parameter groups using Symbols as shortcuts, e.g. :standard for all HITRAN standard parameters.

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Parameter groups

There is a number of parameter groups you can use to define parameter lists for fetching line-by-line data. For now it is recommended to use :standard and combine it with :ht_air. A list of all parameter groups will be listed in the future.

Isotopologue IDs

HITRAN.iso_id — Function

iso_id([db::SQLite.DB,] M::T, I::T) where T <: Union{Integer, AbstractVector{Integer}}

Returns the global isotopologue IDs for the given molecule ids and local ids provided either as single value or as array for both parameters.

Arguments

M: molecule id or array of ids
I: local isotopologue id or array of ids

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iso_id([db::SQLite.DB,] formulas::T) where T <: Union{String, AbstractVector{String}}

Returns the global isotopologue IDs for the given molecule or isotopologue formulas.

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