| codeToCountry | Convert country codes to country names |
| codeToState | Convert state codes to state nnames |
| CONUS | CONUS state codes |
| convertCARBAirBasins | Convert California Air Resources Board basin shapefiles |
| convertEEZCountries | Convert Exclusive Economic Zones countries shapefile |
| convertEPARegions | Convert EPA Region shapefiles |
| convertGACC | Convert Geographic Area Coordination Center shapefile |
| convertGADM | Convert Global Administrative Areas (GADM) SPDF |
| convertNaturalEarthAdm1 | Convert Level 1 (State) Borders Shapefile |
| convertNWSFireZones | Convert NWS Public Forecast Zones Shapefile |
| convertOSMTimezones | Convert OSM Timezone Shapefile |
| convertStateLegislativeDistricts | Convert US state legislative districts shapefile |
| convertTerrestrialEcoregions | Convert Terrestrial Ecoregion Shapefile |
| convertTMWorldBorders | Convert World Borders Shapefile |
| convertTMWorldBordersSimple | Convert (Simple) World Borders Shapefile |
| convertUSCensusCBSA | Convert US Core Based Statistical Areas Shapefile |
| convertUSCensusCongress | Convert US congressional districts shapefile |
| convertUSCensusCounties | Convert US county borders shapefile |
| convertUSCensusStates | Convert US Census State Shapefile |
| convertUSCensusUrbanAreas | Convert US Census Urban Areas shapefiles |
| convertUSIndianLands | Convert Indian Lands Shapefile |
| convertWBDHUC | Convert USGS hydrologic unit shapefiles |
| convertWeatherZones | Convert NWS Public Forecast Zones Shapefile. |
| convertWikipediaTimezoneTable | Convert Wikipedia Timezone Table to Dataframe |
| convertWorldTimezones | Convert Timezone Shapefile |
| countryToCode | Convert country names to country codes |
| dissolve | Aggregate shapes in a SpatialPolygonsDataFrame |
| getCountry | Return country names at specified locations |
| getCountryCode | Return country ISO codes at specified locations |
| getCountryName | Return country names at specified locations |
| getHUC | Return HUCs at specified locations |
| getHUCName | Return HUC names at specified locations |
| getPolygonID | Get polygonID from SPDF of interest |
| getSpatialData | Return spatial data associated with a set of locations |
| getSpatialDataDir | Get package data directory |
| getState | Return state names at specified locations |
| getStateCode | Return state ISO codes at specified locations |
| getStateName | Return state names at specified locations |
| getTimezone | Return Olson timezones at specified locations |
| getUSCounty | Return US county name at specified locations |
| getVariable | Return SPDF variable at specified locations |
| installedSpatialData | List locally installed spatial datasets |
| installSpatialData | Install spatial datasets |
| installSpatialData_0.6 | Install version 0.6 spatial datasets |
| iso2ToIso3 | Convert from ISO2 to ISO3 country codes |
| iso3ToIso2 | Convert from ISO3 to ISO2 country codes |
| loadSpatialData | Load spatial datasets |
| MazamaSpatialUtils | Mazama Science spatial data and utility functions. |
| setSpatialDataDir | Set package data directory |
| SimpleCountries | Simplified spatial dataset of country boundaries. |
| SimpleCountriesEEZ | Simplified spatial dataset of EEZ/country combined boundaries. |
| SimpleTimezones | Simplified spatial dataset of world timezones. |
| simplify | Simplify SpatialPolygonsDataFrame |
| SpatialDataDir | Directory for spatial data |
| stateToCode | Convert state names to state codes |
| subsetHUC | Subset pre-formatted HUC files into smaller groupings. |
| summarizeByPolygon | Summarize values by polygon |
| US_52 | US state codes |
| US_countyCodes | Dataframe of US state codes |
| US_countyConversion | Conversion functions for US county names and FIPS codes. |
| US_countyFIPSToName | Conversion functions for US county names and FIPS codes. |
| US_countyNameToFIPS | Conversion functions for US county names and FIPS codes. |
| US_stateCodes | Dataframe of US state codes |
| US_stateCodeToCode | Conversion functions for US state names, codes and FIPS codes. |
| US_stateCodeToFIPS | Conversion functions for US state names, codes and FIPS codes. |
| US_stateCodeToName | Conversion functions for US state names, codes and FIPS codes. |
| US_stateConversion | Conversion functions for US state names, codes and FIPS codes. |
| US_stateFIPSToCode | Conversion functions for US state names, codes and FIPS codes. |
| US_stateFIPSToName | Conversion functions for US state names, codes and FIPS codes. |
| US_stateNameToCode | Conversion functions for US state names, codes and FIPS codes. |
| US_stateNameToFIPS | Conversion functions for US state names, codes and FIPS codes. |