arlmet.File.create_recordset#

File.create_recordset(time, *, forecast=None)[source]#

Create a writable RecordSet for one valid time.

Parameters:

  • time (Timestamp | str) – Valid time for the new record set.

  • forecast (int | None) – Forecast hour for the index record header. HYSPLIT docs are unclear on this, but conversion code appears to use the forecast hour from the first variable specified in the config file. This is brittle in arlmet’s case, so we chose to either allow specifying it here or an index’s forecast hour will be set to the minimum forecast hour among its variables (defaulting to -1 when all variables are missing data).

Returns:

Writable record set associated with time.

Return type:

RecordSet