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U.S. Gazetteer, TIGER/Line shapefiles, census data. National Historical Geographic Information System NHGIS provides free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2012.
Shapefiles : are a data exchange format created by ESRI and one of the most widely used GIS/geodata formats. One "shapefile" usually include four different files : .shp, .shx, .dbf, .prj.
QGIS also makes it simple to share and publish geospatial data as maps, online services, or print maps in a variety of file formats, such as shapefiles, GeoTIFFs, and KML files. Screenshot of Print Composer. In order to prepare printed map with QGIS, Print Layout is used. It can be used for adding multiple map views, labels, legends, etc.
The shapefile format is a geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products . [ 1 ]
QGis (full name: Quantum GIS) is a GPL license, cross-platform (Windows, Linux, Mac), and rather friendly cartographic software application. It is a Geographic Information System (GIS) program you can use to create, view, and analyze maps.
Press N to create a new layer. Under "Type", select "Line". QGIS demands that you define an attribute here. An attribute is a column in the attribute table, such as "SIGN1". It doesn't matter what you call it or what type it is, just define one and click OK. QGIS asks you to pick a location to save the .shp file. Pick one and save it.
This was most common from the 1970s through the early 1990s, because GIS software developers had to invent their own geometry data structures, but incorporated existing relational database file formats for the attributes. For example, the Esri Shapefile format includes the .dbf file from the DOS dBase software.
Thematic mapping. Creates image pictures from shapefiles and creates Google Maps websites with the data linked to the shapefile - Freeware: QGIS: yes Linux, MAC OS, Windows: QGIS Development Team qgis.org: Visualization Easy to use, ability to expand functionality with Python plugins. Geo-processing functions included. C++ GPL: GRASS: yes Linux ...