5/22/2023 0 Comments Datum conversion calculatorGeographic Calculator is a powerful geodetic software for accurate coordinate conversion, datum transformation, and file translation. Geographic Calculator (formerly Blue Marble Desktop) 2014 SP1 - An easy to use geospatial data conversion and translation tool that enables you to work with. The NAVD88 datum is currently used in elevation studies and floodplain mapping efforts. Geography calculator - Enter latitude and longitude of two points, select the desired units: nautical miles (n mi), statute miles (sm), or kilometers (km) and. Enter the coordinates and choose the current datum of the coordinates and to which datum they need to be converted. For example from WGS 1984 to Dutch grid or from UTM to Ordnance Survey Great Britain 1936. In 1993 NAVD 88 was affirmed as the official vertical datum in the National Spatial Reference System (NSRS). Web VDatum is designed to vertically transform geospatial data among a variety of tidal, orthometric and ellipsoidal vertical datums - allowing users to. This tool converts coordinates from one datum to another datum. NAVD88-ft – The North American Vertical Datum of 1988 (NAVD 88) is the vertical control datum established in 1991 by the minimum-constraint adjustment of the Canadian-Mexican-United States leveling observations.This vertical datum was replaced by the NAVD88 datum and is not typically seen in floodplain mapping efforts these days. ![]() ![]() The datum is defined by the observed heights of mean sea level at the 26 tide gauges and by the set of elevations of all bench marks resulting from the adjustment.
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