Identification and summary; Local use; Sustainability aspects; Quality and capability elements; File type signifiers; Notes; Format requirements; Useful recommendations; ID: fdd000281; Short name: ESRI_grid; Content categories: dataset, gis Format Category: file-group; Other aspects: binary, structured; Last substantial FDD update: 2020-06-03; Draft condition: Partial. ESRI ArcInfo Grid, additionally called ArcGrid, is a raster data format developed by ESRI to include information about geographic space in a grid. A grid specifies geographic space as an array of equally sized square grid points prepared in columns and rows. The indigenous binary ESRI Grid format comprises a number of part documents. Each GRID subdirectory has several component files that store geographical location and characteristic information for the matching grid. In a GRID directory, the adhering to tables and files are found: dblbnd, adf-- The border documents consists of the minimum and maximum x, y works with for an ESRI_grid. prj, adf-- The estimate documents shops the known map forecast information of the ESRI_grid. barrel, adf-- The value attribute table stores the quality data related to the zones of the grid. The worth and index. adf data names will increment alike if the grid has more than one floor tile. Consisted of in an ArcInfo Workspace is an INFO subdirectory including documents that keep details about the ESRI_grid and other associated datasets in the work area. For any particular grid, the NNNN values for. dat and. nit must match. Drifting factor grids stand for constant data, i. e. , information whose borders can not be precisely specified; instead, the borders are gauged in regards to a relationship to a set point such as altitude measured from sea level. Grids are executed utilizing a tiled raster information framework in which the standard unit of data storage space is a rectangle-shaped block of cells. The dimension of the tile for a grid is based on the variety of rows and columns in the grid at the time of creation. The spatial information for a grid is immediately split throughout multiple tiles if the dimension of the grid at the time of development is bigger than the ceiling for the dimension of a tile. Grids can be incorporated into a gotten set of spatially overlapping grids treated as a single entity, called a grid pile. The boundaries of the input layers for a grid stack can overlap exactly, partly, or otherwise all, yet the stack is considered to be only the area where the layers overlap. The directory in which the pile lies will have the complying with files within it: *, stk-- This file consists of a table that stores the names of the grids that comprise the stack, their matching index values, and the record variety of the grid. The INDEX column offers the setting of a grid in the stack while the GRID column lists the grid names that make up the pile. Other columns can be contributed to the pile table, however the INDEX and GRID values ought to not be modified unless using suitable stack management commands found in the GRID capability within the ArcGIS tools. Most use the ESRI_grid layout remains in ArcGIS and other ESRI software products. Historic Climate Data from WorldClim was offered in ESRI_grid style for WorldClim V1. 4, but is now only available in GeoTIFF layout. If another software is used to view and or process an ESRI_grid, the software needs to deal with the entire directory site as a solitary grid and comprehend the relationships among the element documents.
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