NTv2Poly 2.00

The spatial software NTv2Poly replaces the rectangular activity scope contained in NTv2 files with a Polygonal Validity Scope, which is realized with an outline file in classic Shape Format.

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License Shareware
Expires 15 Uses
Price $185
Downloads 11
OS Support Windows Install and Uninstall
File Name ntv2poly.zip
File Size 10.36 MB ( 10,607 KB )
Published Jan 03, 2019 (5 months ago)
Updated (No date provided)

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Product Details

The spatial software NTv2Poly replaces the rectangular activity scope contained in NTv2 files with a Polygonal Validity Scope, which is realized with an outline file in classic Shape Format. Invalid calculations outside the Polygonal Validity Scope thus can be excluded or acknowledged by a warning. Download the trial version from http://www.killetsoft.de/zip/ntv2poly.zip. Read the Worksheet at http://www.killetsoft.de/t_1808_e.htm.

Using NTv2 grid files it is possible to transform points from one coordinate reference system to another with very high accuracy. An NTv2 file contains one or more quasi-rectangular coordinate grids which are defined in the NTv2 headers. Instead of a rectangular area only an embedded polygonal area should and must be covered, for example, a state territory within the country borders.

The program NTv2Poly realizes Polygonal Validity Scopes in NTv2 files. Using so prepared NTv2 files, coordinates outside the validity scope can be excluded from calculations or they can be acknowledged by a warning. This works with coordinate transformations using the geospatial software TRANSDAT and GeoDLL by KilletSoft and with many GIS programs which support Polygonal Validity Scopes.

The Polygonal Validity Scope is realized with a shape file, which contains the outlines of the scope as polygons. The file format Shape is developed by ESRI as a format for geographical objects. For example, in the shape file the border outlines of a country may be stored, which represent the polygonal scope for the NTv2 file used in that country. Using the program NTv2Poly the polygons of the shape file and the quasi rectangular surface of the NTv2 file are superimposed one on the other and processed in an ingenious manner.

The program has a user-selectable multi language interface and comes with extensive online help. The program can be run on most common networks and it is possible to use Terminal Services on WINDOWS Servers.

Requirements: Pentium, 30 MB HD
Release Info: New Release on Jan 03, 2019
Release Notes: Worksheet at www.killetsoft.de/t_1808_e.htm. Graphical views improved. Added test files from Canada and Germany. Fixed problem processing of very large NTv2 files and shape files. Added a graphics window "Area Distribution" Added a graphics window "Polygonal Validity Scope".
Related Tags: inserting insert polygonal validity scope

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