TIGER/Line files are created by the US Census Bureau and cover the entire US. They are often referred simply as TIGER files. For more information see: https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html.
TIGER/Line files are text files and directory-based data sources. For example, one county folder TGR06059 contains several associated files:
TGR06059.RT1 TGR06059.RT2 TGR06059.RT4 TGR06059.RT5 TGR06059.RT6 TGR06059.RT7 TGR06059.RT8 TGR06059.RTA TGR06059.RTC TGR06059.RTH TGR06059.RTI TGR06059.RTP TGR06059.RTR TGR06059.RTS TGR06059.RTT TGR06059.RTZ
Data Access / Connection Method¶
TIGER/Line access occurs through through OGR’s TIGER driver.
CONNECTIONTYPE OGR must be specified.
The full path to the directory containing the associated files is required in the CONNECTION string.
The feature type is specified in the DATA parameter
Using ogrinfo on a TIGER directory to retrieve feature types:
> ogrinfo TGR06059 (NOTE that this is a directory) ERROR 4: Tiger Driver doesn't support update. Had to open data source read-only. INFO: Open of `TGR06059' using driver `TIGER' successful. 1: CompleteChain (Line String) 2: AltName (None) 3: FeatureIds (None) 4: ZipCodes (None) 5: Landmarks (Point) 6: AreaLandmarks (None) 7: Polygon (None) 8: PolygonCorrections (None) 9: EntityNames (Point) 10: PolygonEconomic (None) 11: IDHistory (None) 12: PolyChainLink (None) 13: PIP (Point) 14: TLIDRange (None) 15: ZeroCellID (None) 16: OverUnder (None) 17: ZipPlus4 (None)
Using ogrinfo to examine the structure of the TIGER feature type CompleteChain:
> ogrinfo TGR06059 CompleteChain -summary ERROR 4: Tiger Driver doesn't support update. Had to open data source read-only. INFO: Open of `TGR06059' using driver `TIGER' successful. Layer name: CompleteChain Geometry: Line String Feature Count: 123700 Extent: (-118.125898, 33.333992) - (-117.412987, 33.947512) Layer SRS WKT: GEOGCS["NAD83", DATUM["North_American_Datum_1983", SPHEROID["GRS 1980",6378137,298.257222101]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433]] MODULE: String (8.0) TLID: Integer (10.0) SIDE1: Integer (1.0) SOURCE: String (1.0) FEDIRP: String (2.0) FENAME: String (30.0) FETYPE: String (4.0) FEDIRS: String (2.0) CFCC: String (3.0) FRADDL: String (11.0) TOADDL: String (11.0) FRADDR: String (11.0) TOADDR: String (11.0) FRIADDL: String (1.0) TOIADDL: String (1.0) FRIADDR: String (1.0) TOIADDR: String (1.0) ZIPL: Integer (5.0)
LAYER NAME "my_tiger_layer" TYPE LINE STATUS DEFAULT CONNECTIONTYPE OGR CONNECTION "/path/to/data/tiger/TGR06059" DATA "CompleteChain" CLASS STYLE COLOR 153 102 0 END #style END #class END #layer