wherec.blogg.se - Gplates arcgis file

sbx - Part 2 of spatial index for read-write instances of the Shapefile format.

If present, essential for correct processing.

sbn - Part 1 of spatial index for read-write instances of the Shapefile format.

Other file extensions that may be part of a shapefile are: Attribute records in the dBASE file must be in the same order as records in the main file. The one-to-one relationship between geometry and attributes is based on record number.

dbf - dBASE Table file (mandatory) a constrained form of DBF that contains feature attributes with one record per feature.

The index file (.shx) contains a 100-byte header followed by 8-byte, fixed-length records. In the index file, each record contains the offset of the corresponding main file record from the beginning of the main file.

shp - Main file (mandatory) a direct access, variable-record-length file in which each record describes a shape with a list of its vertices.For example, a water GIS data set must have the minimum set of files: water.shp, water.shx, and water.dbf. There are three required files that, at a minimum, make up a shapefile. What File Extensions are Associated with a Shapefile?Īll shapefile files must have the same name but have different extensions. zip file for transfer such as emailing as an attachment or via a web site download. Commonly, shapefiles are compressed in a. prj with the shapefile’s projection information. All three files must be present in the same directory for them to be viewable. For example, shapefiles can be directly read by a number of GIS software programs such as ArcGIS and QGIS.ĭespite its name indicating a singular file, a shapefile is actually a collection of at least three basic files: .shp. Developed by Esri, shapefiles are now an open format and is a popular option for data transfer.

Shapefiles store non-topological vector data along with related attribute data.

The shapefile format is now a common format for storing vector GIS data.