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SoilGrids1km is a collection of updatable soil property and class maps of the world at a resolution of 1 km produced using state-of-the-art model-based statistical methods. Presents estimates (means and 90% confidence intervals) for pH, texture (sa, si, cl), organic carbon and more for 6 depth layers up to 2 m depth.
In addition, NHGIS has created historical and contemporary cartographic boundary shapefiles compatible with every census, and over 50 million lines of metadata describing the collection. Historical U.S. state and county boundaries are available 1790–present, with smaller geographies available as the U.S. Census Bureau created them.
The data was entered in spreadsheet format or in ESRI shapefiles and submitted via e-mail to the USGS National Geospatial Technical Operations Center(s) in Denver, Colorado, and Rolla, Missouri. During the registration process, prospective volunteers submitted a list of the 7.5 minute quadrangle maps on which they wished to work.
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 ]
Georgia is represented in the United States House of Representatives by 14 elected representatives, each campaigning and receiving votes in only one district of the 14. After the 2000 census , the State of Georgia was divided into 13 congressional districts, increasing from 11 due to reapportionment .
Blank map of the United States with state boundaries. Modified from File:Map of USA without state names.svg (Hawaii and Alaska insets more clearly distinguished; slightly cropped, etc.) Date: 21 September 2010: Source: Modified from File:Map of USA without state names.svg, which was modified from Image:Map of USA with state names.svg: Author
Each U.S. state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 108 zones in the contiguous United States, with 10 more in Alaska, five in Hawaii, one for Puerto Rico and the United States Virgin Islands, and one for Guam. The system is widely used for geographic data by state and local ...
Epi Map is designed to show data from Epi Info 2000 files by relating data fields to SHAPE files containing the geographic boundaries. Shapefiles also can contain data on population or other variables, and can therefore provide numeric data that become part of the display either as numerator or denominator. [1]