Software Listing of Author : "National Geodetic Survey"
- Forwrd3d
- License: Shareware
- Price:


Forwrd3d is the 3D version of the Forward program that also adds a third parameter to the calculation: the height component. The goal of the program is to compute the geographic position of a point, given the geodetic azimuth and distance from a point with known geographic position.
The results of the calculation are available in the program's window or you can export them to a text file for later analysis.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- GPPCGP
- License: Shareware
- Price:


GPPCGP is a lightweight application that allows you to convert between NAD 27 State plane coordinates and NAD 27 geographic positions. The application is designed to transform the coordinates into latitudes and longitudes.
The results of the conversion are saved as a text file that includes defining constants for all NAD 27 plane coordinate zones.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- HTDP
- License: Shareware
- Price:


HTDP is a compact program that intends to help users to predict horizontal displacements and to transform positions between reference frames. The application is designed to calculate values for locations throughout the United States and its territories.
This software also enables users to update geodetic coordinates and/or observations from one date to another.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- INTG
- License: Shareware
- Price:


INTG is a lightweight program that allows you to interpolate geoid heights from data files using user-provided coordinates.You can enter the parameters from the keyboard or specify the folder that contains the data files.
The interface of the program is very simple and allows you to operate only with the keyboard.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- Invers3d
- License: Shareware
- Price:


Invers3d is a the 3D version of the Inverse program and has the ability to compute the distance between two points by also including the height component.
The parameters can be entered as geodetic coordinates or as rectangular coordinates in order to perform the calculation. The result can be saved as a text file in order to review it later.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- LVL_DH
- License: Shareware
- Price:


LVL_DH is a compact application that is used to estimate the height difference between two different objects. The calculation is performed by removing the orthometric correction from the differences of published heights.
You can use the program to estimate the difference between two points in interactive mode or to perform multiple calculations from a data file.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- Translev
- License: Freeware
- Price: 0.00


This program facilitates the process of edtiting, formatting and checking digital leveling observation data and creates abstracts, bok files, and VERTOBS datasets for submission to the National Geodetic Survey (NGS). The program includes many built-in functions such as predicting temperature differences, refaction corrections, rod corrections and plotting. Also included are routines for editing *.lvl files and VERTOBS files.
- Publisher: National Geodetic Survey
- Date Released: 03-08-2012
- Download Size: 6349 KB
- Download
- Platform: WinOther
- WinDesc
- License: Shareware
- Price:


WinDesc is a handy program designed for creating, editing, and formatting the files that include geodetic descriptions. The user can create a new description file and enter all the data from the keyboard.
The program can assist you in creating a new project by providing the standard information in drop-down lists.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther
- XNTG
- License: Shareware
- Price:


XNTG is a compact tool designed to help you extract sub-grids from binary data files. The program can be used to convert back and forth between binary and ASCII.
The application allows you to extract and translate Geoid files or just give statistics about a data file.
- Publisher: National Geodetic Survey
- Date Released:
- Download
- Platform: WinOther

