Support for all calendars as specified in the Climate and Forecast (CF) Metadata Conventions for climate and forecasting data. The CF Metadata Conventions is widely used for distributing files with climate observations or projections, including the Coupled Model Intercomparison Project (CMIP) data used by climate change scientists and the Intergovernmental Panel on Climate Change (IPCC). This package specifically allows the user to work with any of the CF-compliant calendars (many of which are not compliant with POSIXt). The CF time coordinate is formally defined in the CF Metadata Conventions document.
Maintainer: Patrick Van Laake patrick@vanlaake.net [copyright holder]
The package can create a CFtime instance from scratch or, more commonly, it
can use the dimension attributes and dimension variable values from a NetCDF
resource. The package does not actually do any of the reading and the user is
free to use their NetCDF package of preference (with the two main options
being RNetCDF and
ncdf4).
Create, modify, inquire
CFtime(): Create a CFtime instance
Properties of the CFtime instance
CFparse(): Parse a vector of character timestamps into CFtime elements
Compare two CFtime instances
Merge two CFtime instances
Append additional time steps to a CFtime instance
CFtimestamp(): Generate a vector of character or POSIXct timestamps from a CFtime instance
CFrange(): Timestamps of the two endpoints in the time series
CFcomplete(): Does the CFtime instance have a complete time series between endpoints?
CFmonth_days(): How many days are there in a month using the CFtime calendar?
Factors and coverage
CFfactor(): Create factors for different time periods
CFfactor_units(): How many units of time are there in each factor level?
CFfactor_coverage(): How much data is available for each level of the factor?
Useful links: