For the other gridfiles, NODATA is only used for areas covered with water, except for the land cover grids, on which water is a separate class.Ī DBF (dBase file) is a dbase format database table. For these areas, the value is "NODATA" (indicating the absence of data for those cells). ( More info on format for developers).Ī gridfile with "country mask" indicates that the areas outside the selected country are masked out. From DIVA-GIS they can be exported to a number of other grid formats including IDRISI and Arc or to shapefiles.
Shapefiles contain a single class of "vector" data such as points, lines, or polygons. It can be imported to most other GIS programs. This is a commonly used format that can be directly used in Arc-anything, DIVA-GIS, and many other programs. Grid (raster) data are stored as DIVA gridfilesĮach "shapefile" consist of at least three actual files. Vector data are stored as ESRI shapefiles You can use programs such as 7-zip, PKZIP or StuffIt to decompress the files. The files have been compressed and grouped in ZIP files. National Imagery and Mapping Agency's (NIMA) database of foreign geographic feature names
They can also be used to map localities, however you can download more recent files from NIMA The files should be placed in the \gazet directory. The files you can download here are for use in DIVA for automatic georeferencing (to assign coordinates to places). Global gridded population databaseĪ gazetteer is a list of place names and their coordinates. Land cover, original data resampled onto a 30 seconds gridĬIESIN, 2000. Seperate files for line and area features The level of subdivision varies between countries
Select and download free geographic (GIS) data for any country in the worldĬountry outlines and administrative subdivisions for all countries.
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