Questions tagged [nad83]

North American Datum of 1983, a geocentric datum and geographic coordinate system based on the 1980 Geodetic Reference System ellipsoid (GRS80).

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Why are there differences in output position between the ArcGIS versus NCAT transformation [NAD83 to NAD83 HARN]?

My question is specifically referencing the file-based grid transformation methods that are now available in ArcGIS. I thought this grid-file method was exactly the same method that NGS's NCAT used ...
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ATS77 MTM 5 to NAD83 CSRS UTM 20N Coordinate Converter?

I've been looking for a simple way to check the accuracy of my transformation using a set of coordinates for a single point but have been unable to find an online tool or piece of desktop software ...
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507 views

Converting NAD83 (epsg:4269) to WGS84 (epsg:4326) using pyproj

I'm trying to convert US census data (NAD83) to WGS84. I know the difference between the two is quite minor, but trying to apply the transformation using pyproj does not do anything. e.g.: from ...
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Adding UTM grid (NAD83) with 1x1km spacing and label the grid lines?

I'm currently running QGIS 2.18.4 (the latest release). I'm trying to add a UTM grid to my maps, specifically the NAD83 reference system for zone 15N, that hopefully can show UTM coordinates and with ...
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How to best import a US Map Schematic?

I would like to use the following wiki US Map schematic as a background to my map work. (http://en.wikipedia.org/wiki/File:Blank_US_Map.svg) It is a .svg file, and GeoReferencer is unable to import it....
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Incorrect coordinates when reprojecting NAD27 to NAD83

I have some historic UTM coordinates as NAD27 (556787, 7169250) which I entered into a spreadsheet and have imported into QGIS. I assign them the projection Nad27 / UTM zone 12N (EPSG: 26712) I ...
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152 views

Geographic Transformation in Alaska Between NAD83 (NSRS 2007) and WGS84

This is a related question to this one asked ~3 years ago: Geographic Transformations in Alaska Between NAD83 and WGS84 We are currently on ArcGIS Desktop 10.4.1 What is the best geographic ...
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Batch converting NAD83 Z12 to NAD83 Z13

I have a need to to convert a CSV file that was surveyed in NAD83 Zone 12 to NAD83 Zone 13 coordinates, is there an online tool that can do this for me?
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QGIS 3.0 is showing a point's coordinates in the original spatial reference system instead of the project's spatial reference system

I obtained GPS coordinates of a point to within a couple centimeter accuracy using RTK GPS in the NAD83 Spatial Reference System. This information is included in the QGIS layer file metadata, and the ...
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What's the difference between NAD83(2011) (OGR WKID 6318) and GCS_NAD_1983_2011 (ESRI WKID 6318)?

I just projected a feature class originally in Web Mercator (WKID 3857) to WKID 6318 (ESRI calls this "GCS_NAD_1983_2011") using ESRI's projection tool, and the same feature class to WKID 6318 (OGR ...
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Geographic Transformation in Alaska Between NAD83 (NSRS 2007) and NAD83

What is the best geographic transformation for Alaska to go from NAD83 to NAD83 (NSRS2007)? Esri available transformation for GCS_NAD_1983_NSRS2007 to NAD83: WGS_1984_(ITRF00)_To_NAD_1983 + ...