Connects dataframes/tables with a remote data source. Raw data downloaded
  from the data source can be further processed and transformed using data preparation 
  code that is also baked into the dataframe/table. Refreshable dataframes can 
  be shared easily (e.g. as R data files). Their users do not need to care about
  the inner workings of the data update mechanisms.

Fetches NCBI data (RefSeq <https://www.ncbi.nlm.nih.gov/refseq/> database) and provides an environment to  
    extract information at the level of gene, mRNA or protein accessions.

Provides subsets with reference semantics, i.e. subsets
    which automatically reflect changes in the original object, and which
    optionally update the original object when they are changed.

Access the 'Refuge' API, a web-application for locating trans and 
    intersex-friendly restrooms, including unisex and accessible restrooms. 
    Includes data on the location of restrooms, along with directions, 
    comments, user ratings and amenities. Coverage is global, but data is 
    most comprehensive in the United States.
    See <https://www.refugerestrooms.org/api/docs/> for full API documentation.

The Refugee Population Statistics Database published by
    The Office of The United Nations High Commissioner for Refugees (UNHCR)
    contains information about forcibly displaced populations
    spanning more than 70 years of statistical activities.
    It covers displaced populations such as refugees, asylum-seekers and
    internally displaced people, including their demographics.
    Stateless people are also included, most of who have never been displaced.
    The database also reflects the different types of solutions
    for displaced populations such as repatriation or resettlement. 
    More information on the data and methodology can be found on
    the UNHCR Refugee Data Finder <https://www.unhcr.org/refugee-statistics/>.

Methods for regression for functional
    data, including function-on-scalar, scalar-on-function, and
    function-on-function regression. Some of the functions are applicable to
    image data.