Returns the name of the reference as a string. This is a short string description of the data set. If you create a subset of a data set by using indexing, the name may change if the result has only a single (non-name) column or a single row.

Returns a string description of the data set. If you create a subset of a data set by using indexing, the description may change if the result has only a single (non-name) column or a single row.

Returns the identifier of a reference as a string. This is a unique identifier that can be used to find this reference among the built-in data sets.

Returns a list of strings which are the names of the rows in the reference. Each row name is unique in the containing data set. This command may be slow if used on the full GeoNames data set.

Returns the total number of rows in the reference in a efficient manner.

Returns a list of strings which are the names of the columns in the reference. Each column name is unique in the containing data set.

Returns the reference as a Matrix, without the column headers and without the row names. This command will retrieve all metadata, which may be slow if used on a large data set.

$\mathrm{with}\left(\mathrm{DataSets}\right)\:$

$\mathrm{ref}≔\mathrm{Reference}\left(''Builtin''\,''Country''\right)$

$\mathrm{ref}≔\left[\begin{array}{ccccc}\mathrm{Country\; (Name)}& \mathrm{Currency\; Code}& \mathrm{2\; Letter\; Country\; Code}& \mathrm{\dots }& \mathrm{(57\; more)}\\ \mathrm{Afghanistan}& ''AFN''& ''AF''& \mathrm{\dots }& \\ \mathrm{Albania}& ''ALL''& ''AL''& \mathrm{\dots }& \\ \mathrm{Algeria}& ''DZD''& ''DZ''& \mathrm{\dots }& \\ \mathrm{⋮}& \mathrm{⋮}& \mathrm{⋮}& \mathrm{\ddots }& \\ \mathrm{(182\; more)}& & & & \end{array}\right]$

$\mathrm{GetIdentifier}\left(\mathrm{ref}\right)$

$''Country''$

$\mathrm{GetName}\left(\mathrm{ref}\right)$

$''Country\; properties''$

$\mathrm{GetDescription}\left(\mathrm{ref}\right)$

$''A\; table\; of\; country\; properties,\; containing\; immediate\; values\; for\; some\; properties\; and\; references\; to\; time\; series\; data\; (from\; Quandl)\; for\; others.''$

$\mathrm{GetElementNames}\left(\mathrm{ref}\right)$

$\left[''Afghanistan''\,''Albania''\,''Algeria''\,''Angola''\,''Antigua\; and\; Barbuda''\,''Argentina''\,''Armenia''\,''Australia''\,''Austria''\,''Azerbaijan''\,''Bahrain''\,''Bangladesh''\,''Barbados''\,''Belarus''\,''Belgium''\,''Belize''\,''Benin''\,''Bhutan''\,''Bolivia''\,''Bosnia\; and\; Herzegovina''\,''Botswana''\,''Brazil''\,''Brunei''\,''Bulgaria''\,''Burkina\; Faso''\,''Burundi''\,''Cabo\; Verde''\,''Cambodia''\,''Cameroon''\,''Canada''\,''Central\; African\; Republic''\,''Chad''\,''Chile''\,''China''\,''Colombia''\,''Comoros''\,''Congo''\,''Congo-Brazzaville''\,''Costa\; Rica''\,''Croatia''\,''Cuba''\,''Cyprus''\,''Czech\; Republic''\,''Denmark''\,''Djibouti''\,''Dominica''\,''Dominican\; Republic''\,''Ecuador''\,''Egypt''\,''El\; Salvador''\,''Equatorial\; Guinea''\,''Eritrea''\,''Estonia''\,''Ethiopia''\,''Fiji''\,''Finland''\,''France''\,''Gabon''\,''Gambia''\,''Georgia''\,''Germany''\,''Ghana''\,''Greece''\,''Grenada''\,''Guatemala''\,''Guinea''\,''Guinea-Bissau''\,''Guyana''\,''Haiti''\,''Honduras''\,''Hong\; Kong''\,''Hungary''\,''Iceland''\,''India''\,''Indonesia''\,''Iran''\,''Iraq''\,''Ireland''\,''Israel''\,''Italy''\,''Ivory\; Coast''\,''Jamaica''\,''Japan''\,''Jordan''\,''Kazakhstan''\,''Kenya''\,''Kiribati''\,''Kosovo''\,''Kuwait''\,''Kyrgyzstan''\,''Laos''\,''Latvia''\,''Lebanon''\,''Lesotho''\,''Liberia''\,''Libya''\,''Lithuania''\,''Luxembourg''\,''Macedonia''\,''Madagascar''\,''Malawi''\,''Malaysia''\,''Maldives''\,''Mali''\,''Malta''\,''Mauritania''\,''Mauritius''\,''Mexico''\,''Moldova''\,''Mongolia''\,''Montenegro''\,''Morocco''\,''Mozambique''\,''Myanmar''\,''Namibia''\,''Nepal''\,''Netherlands''\,''New\; Zealand''\,''Nicaragua''\,''Niger''\,''Nigeria''\,''Norway''\,''Oman''\,''Pakistan''\,''Panama''\,''Papua\; New\; Guinea''\,''Paraguay''\,''Peru''\,''Philippines''\,''Poland''\,''Portugal''\,''Qatar''\,''Romania''\,''Russia''\,''Rwanda''\,''Saint\; Lucia''\,''Samoa''\,''Sao\; Tome\; and\; Principe''\,''Saudi\; Arabia''\,''Senegal''\,''Serbia''\,''Seychelles''\,''Sierra\; Leone''\,''Singapore''\,''Slovakia''\,''Slovenia''\,''Solomon\; Islands''\,''Somalia''\,''South\; Africa''\,''South\; Korea''\,''South\; Sudan''\,''Spain''\,''Sri\; Lanka''\,''Sudan''\,''Suriname''\,''Swaziland''\,''Sweden''\,''Switzerland''\,''Syria''\,''Taiwan''\,''Tajikistan''\,''Tanzania''\,''Thailand''\,''The\; Bahamas''\,''Timor-Leste''\,''Togo''\,''Tonga''\,''Trinidad\; and\; Tobago''\,''Tunisia''\,''Turkey''\,''Turkmenistan''\,''Tuvalu''\,''UAE''\,''UK''\,''USA''\,''Uganda''\,''Ukraine''\,''Uruguay''\,''Uzbekistan''\,''Vanuatu''\,''Venezuela''\,''Vietnam''\,''Yemen''\,''Zambia''\,''Zimbabwe''\right]$

$\mathrm{CountRows}\left(\mathrm{ref}\right)$

$185$

$\mathrm{GetHeaders}\left(\mathrm{ref}\right)$

$\left[''Currency\; Code''\,''2\; Letter\; Country\; Code''\,''Country\; Code\; for\; Internet\; Top-Level\; Domain''\,''3\; Letter\; Country\; Code''\,''Heliports''\,''Children\; under\; the\; age\; of\; 5\; years\; underweight\; (\%)''\,''Military\; expenditures\; (\%\; GDP)''\,''Contraceptive\; prevalence\; rate\; (\%)''\,''Gross\; national\; saving\; (\%\; GDP)''\,''Public\; debt\; (\%\; GDP)''\,''Total\; renewable\; water\; resources''\,''Health\; expenditures\; (\%\; GDP)''\,''Obesity\; -\; adult\; prevalence\; rate\; (\%)''\,''Hospital\; bed\; density\; /\; 1000\; pop''\,''Physicians\; density\; /\; 1000\; pop''\,''Education\; expenditures\; (\%\; GDP)''\,''Electricity\; -\; from\; other\; renewable\; sources\; (\%)''\,''Electricity\; -\; from\; fossil\; fuels\; (\%)''\,''Electricity\; -\; from\; nuclear\; fuels\; (\%)''\,''Electricity\; -\; from\; hydroelectric\; plants\; (\%)''\,''Crude\; oil\; -\; exports''\,''Crude\; oil\; -\; imports''\,''Crude\; oil\; -\; production''\,''Refined\; petroleum\; products\; -\; exports''\,''Carbon\; dioxide\; emissions\; from\; consumption\; of\; energy''\,''Electricity\; -\; installed\; generating\; capacity''\,''Refined\; petroleum\; products\; -\; production''\,''Refined\; petroleum\; products\; -\; consumption''\,''Refined\; petroleum\; products\; -\; imports''\,''Natural\; gas\; -\; exports''\,''Natural\; gas\; -\; imports''\,''Natural\; gas\; -\; production''\,''Natural\; gas\; -\; consumption''\,''Natural\; gas\; -\; proved\; reserves''\,''Crude\; oil\; -\; proved\; reserves''\,''Electricity\; -\; exports''\,''Taxes\; and\; other\; revenues\; (\%\; GDP)''\,''Electricity\; -\; imports''\,''Telephones\; -\; mobile\; cellular''\,''Budget\; surplus\; (+)\; or\; deficit\; (-)\; (\%\; GDP)''\,''Electricity\; -\; production''\,''Electricity\; -\; consumption''\,''Telephones\; -\; main\; lines\; in\; use''\,''Net\; migration\; rate\; /\; 1000\; pop\; /\; year''\,''Industrial\; production\; growth\; rate\; (\%)''\,''Death\; rate\; /\; 1000\; pop\; /\; year''\,''Birth\; rate\; /\; 1000\; pop\; /\; year''\,''Unemployment\; rate\; (\%)''\,''Inflation\; rate\; (consumer\; prices)\; (\%\; /\; year)''\,''Total\; fertility\; rate\; (children\; /\; woman)''\,''HIV/AIDS\; -\; adult\; prevalence\; rate''\,''HIV/AIDS\; -\; deaths\; /\; year''\,''Internet\; hosts''\,''Population\; growth\; rate\; (\%\; /\; year)''\,''Labor\; force''\,''Airports''\,''Irrigated\; land''\,''Land\; boundaries''\,''Coastline''\right]$

$\mathrm{GetData}\left(\mathrm{ref}\left[1..2,1..2\right]\right)$

$\left[\begin{array}{cc}''AFN''& ''AF''\\ ''ALL''& ''AL''\end{array}\right]$

$\mathrm{refg}≔\mathrm{Builtin}:-\mathrm{Reference}\left(''Geonames''\right)$

$\mathrm{refg}≔\left[\begin{array}{ccccc}\mathrm{Geonames\; (GeoNamesid)}& \mathrm{Name}& \mathrm{Type}& \mathrm{\dots }& \mathrm{(7\; more)}\\ \mathrm{68}& \mathrm{Boneh-ye\; Mehdi}& ''section\; of\; populated\; place''& \mathrm{\dots }& \\ \mathrm{121}& \mathrm{Lab\; Sefid}& ''locality''& \mathrm{\dots }& \\ \mathrm{166}& \mathrm{Gorizi}& ''locality''& \mathrm{\dots }& \\ \mathrm{⋮}& \mathrm{⋮}& \mathrm{⋮}& \mathrm{\ddots }& \\ \mathrm{(1155858\; more)}& & & & \end{array}\right]$

$\mathrm{CountRows}\left(\mathrm{refg}\right)$

$1155861$

$\mathrm{GetHeaders}\left(\mathrm{refg}\right)$

$\left[''Name''\,''Type''\,''Latitude''\,''Longitude''\,''Country''\,''Province/State/Region''\,''City/County''\,''Population''\,''Time\; Zone''\right]$

$\mathrm{Waterloo\_Data}≔\mathrm{refg}\left[\left[\mathrm{Country}=''Canada''\&comma;\mathrm{Type}=''populated\; place''\&comma;1000<\mathrm{Population}\&comma;\mathrm{Name}=''Waterloo''\right]\right]$

$\mathrm{Waterloo\_Data}≔\left[\begin{array}{ccccc}\mathrm{Geonames\; (GeoNamesid)}& \mathrm{Name}& \mathrm{Type}& \mathrm{\dots }& \mathrm{(7\; more)}\\ \mathrm{6176821}& \mathrm{Waterloo}& ''populated\; place''& \mathrm{\dots }& \\ \mathrm{6176823}& \mathrm{Waterloo}& ''populated\; place''& \mathrm{\dots }& \end{array}\right]$

$\mathrm{GetData}\left(\mathrm{Waterloo\_Data}\right)$

$\left[\begin{array}{ccccccccc}''Waterloo''& ''populated\; place''& 45.3500799999999984& \mathrm{-72.5158200000000051}& ''Canada''& ''Quebec''& ''Monteregie''& 4064& ''America/Toronto''\\ ''Waterloo''& ''populated\; place''& 43.4667999999999992& \mathrm{-80.5163900000000012}& ''Canada''& ''Ontario''& \mathrm{undefined}& 97475& ''America/Toronto''\end{array}\right]$

$\mathrm{GetData}\left(\mathrm{Waterloo\_Data}\left[..,\mathrm{Population}\right]\right)$

$\left[\begin{array}{c}4064\\ 97475\end{array}\right]$

The DataSets[Builtin][Reference][GetName], DataSets[Builtin][Reference][GetIdentifier], DataSets[Builtin][Reference][GetDescription], DataSets[Builtin][Reference][GetElementNames], DataSets[Builtin][Reference][CountRows], DataSets[Builtin][Reference][GetHeaders] and DataSets[Builtin][Reference][GetData] commands were introduced in Maple 2015.

For more information on Maple 2015 changes, see Updates in Maple 2015.