About & Pics


NRG Alignment Viewer is a Civil Engineering tool that allows the display of Geometric alignments, lines, points and cross sections.

Designed to assist highway and railway construction/maintenance the NRG Alignment Viewer allows the conversion between Geodetic WGS84/ETRS89 World coordinates (Latitude Longitude) to Cartesian Easting Northing and Geometric Alignment coordinates based on a given transformation. By default Alignment Viewer supports hundreds of different coordinate transformations and allows users to load custom transformations via a .DAT file.

NRG Alignment Viewer provides a track mode and a search mode.

Track mode will provide the user with real-time updates of their device GPS position in WGS84, Cartesian EN and Geometric Alignment formats. A postcode for the current location can also be requested on demand.

Search mode will allow the user to search for a specific location or view the WGS84, Cartesian EN or Geometric Alignment coordinates for a given map position. Users may also request the location of a given postcode (A Country Code, e.g. UK, USA, etc must be provided for postcode search)

**Geometric Alignments**

Alignments can be loaded by the following methods:
Loading an NRG Alignment file (.nst).
Importing a LandXML file to NRG Alignment file.

NRG Alignment viewer provides support for Geometric alignments incorporating Curves, Spirals, Clothoids, Parabolas and Straights.
Provides support for Alignments using Chainage/Station/Meterage and Offset.

**Geometric Pins/Points**

Allows the import of Pins from Google Earth files (.kml), NRG Pin files (.gpf) and ASCII/CSV files (.txt).
Pins can be manually placed based on Geodetic, Cartesian EN or Geometric Alignment Coordinates.
Allows for editing of imported pins.
Allows for the export of new Pin files (.kml, .gpf or .txt).

**Geometric Lines**

Lines can be imported from Google Earth file (.kml).
Lines can be loaded to the map, loaded to the cross section or loaded to both.
Cross section display colour can be selected for each line file.
Provides support for loading multiple line files at once.

**Watermarked Photos**
Photos can be taken which will then be watermarked with the coordinates of the current location.

**Cross sections**

Allows the creation of a cross section perpendicular to a given geometric alignment.
Cross section can be updated in real time (Track mode) or on demand (Search mode).
Cross section mode supports pausing updates, locking scale / transformation and importing Google ground elevation data.

**Landscape mode**

Perfect for placing on your vehicle dashboard NRG Alignment Viewer landscape mode provides clear and real-time updates to the device position in terms of WGS84, Cartesian EN and Geometric Alignment (Chainage/Station/Meterage) coordinates.

NRG Alignment Viewer provides many user defined preferences to customize your use of our tool.

**Geometric Alignment Configuration Options**

Offset display formation: -/+ or Left/Right.
Alignment distance: Chainage/Station/Meterage.
Alignment format 10000/10+000.
Decimal places display for Alignment/EN.

**Map Configuration Options**

Enable / Disable real-time map scrolling.
Street, Satellite and Hybrid map types.
Enable / Disable centre point Crosshair.
Enable / Disable distance scale bar.
Select scale bar unit of measurement: Imperial/Metric.

**Cross Section Configuration Options**

Cross section centre: Mid-Point or User defined Offset.
User defined scale section / Cross section distance.
Vertical Exaggeration.
Google Elevation segment distance
Enable / Disable Scale bars.

NRG Alignment Viewer manual can be found at http://www.nrgsurveys.co.uk/downloads/alignmentviewer.pdf
It is strongly recommended that new users view the manual to make full use of the NRG Alignment Viewer.

Tags: GPS, Geometric Alignment, WGS84, ETRS89, OSGB36, Civil Engineering, Highway Maintenance, Surveying, Cross section

 $11.99 in Google Play


Alignment Viewer screenshot 1Alignment Viewer screenshot 2Alignment Viewer screenshot 3Alignment Viewer screenshot 4Alignment Viewer screenshot 5Alignment Viewer screenshot 6Alignment Viewer screenshot 7Alignment Viewer screenshot 8

Version History

Launched Jan 02, 2018 (over 1 year ago).

Releasing new versions every 21 days, on average.

Mar 31
Version 2.94

Fixed an issue where Alignments were not being correctly recognized with certain LandXML Files.

Mar 21
Version 2.93

Fixed a crash on startup.

Mar 04
Version 2.92

Redesigned the Load Last Project Dialog window and fixed a bug where this dialog could be skipped.
Added the option to name photos incrementally (e.g Pic1, Pic2, Pic3 etc..).
By default the coordinate watermark on photos will now appear in the top left. This can still be changed in the settings.

Mar 03
Version 2.91

Redesigned the Load Last Project Dialog window and fixed a bug where this dialog could be skipped.
Added the option to name photos incrementally (e.g Pic1, Pic2, Pic3 etc..).
By default the coordinate watermark on photos will now appear in the top left. This can still be changed in the settings.

Jan 20
Version 2.90

Fixed a crash that occurred when attempting to change a project's transformation.

Dec 04
Version 2.89

Added support for site shift and scale.
Transformation, site shift, and site scale are now stored for each project instead of globally.

Nov 15
Version 2.88

Added support for custom scale factor.

Oct 31
Version 2.86

Fixed an issue preventing some .kml files from being loaded.

Sep 26
Version 2.85

Fixed a crash when loading some LandXML files.
Fixed an issue where the map scale unit setting was not being saved between sessions.
GPS accuracy units will now display using the map scale unit of measurement.

Sep 09
Version 2.84

Fixed a crash when loading LandXML files without Vertical Data

Sep 03
Version 2.83

Fixed an issue where some transformations did not display correctly.

Aug 23
Version 2.8

Added support for thousands of additional transformations. Please note that if you were using a supported transformation (i.e. not using a custom .DAT file) you will need to re-select your transformation from the menu.

Jul 25
Version 2.6

Added support for hundreds of additonal coordinate transformations.
Fixed an error that prevented loading some .kml files.

Jun 17
Version 2.5

Added support for loading KML files containing MultiGeometry.

Jun 13
Version 2.3

Added Take Photo button to landscape mode.
Taking a photo will now attempt to watermark the photo with coordinates based on the current display (Chainage/Station and Offset, Easting and Northing or Latitude and Longitude).

May 16
Version 2.0

Added ability to take a photo and watermark with current Chainage/Station/Meterage and Offset.
Added Toggle for map scrolling to current location.
Added options to configure location update frequency.
Added option to get location updates only on demand.

--Search Mode--
Removed search mode. Search mode functionality is now enabled by default. Coordinate displays will always match the centre of the map.
Added new search function to centre the map to a given location.

Feb 13
Version 1.2

Added ability to view cross-sections of line models without loading an alignment.
Cross-section view without an alignment will be based off the device position and bearing in Track mode, and based off the map position and map bearing in Search mode.
Added support for additional .kml formats for loading lines and points.

Jan 24
Version 1.10

Added new "Extra Large" and "Huge" font sizes.
Updated some UI elements to support the new font sizes.

Jan 16
Version 1.09

Added ability to reload alignments to accommodate swapping transformations.
Fixed an issue where some line / cross-sections could not be unloaded.
Fixed an issue where swapping projects caused the current transformation display to be incorrect.
Fixed an issue with alignment data when using custom transformations.

Jan 15
Version 1.07

Added support for displaying traffic levels. (Must be enabled in the settings menu from Map -> Traffic Display.
Loading lines to the cross section on start up will now correctly display the cross section view.
Improved usability of the App while line files are loaded.
Fixed an issue where some map elements would display after disabling map on landscape mode.
Fixed an issue where some transformations would be incorrectly loaded.

Jan 08
Version 1.06

Fixed an issue where cross section would incorrectly show some intersect points.
Fixed a crash that would sometimes occur when changing display tab during pin creation.
Fixed a crash that would occur when attempting to export a pin file with no project selected.
Added info buttons for loading a project.

Jan 03
Version 1.04

**Bug Fixes**
Lines should now display the correct color.
Lines should now correctly remove when multiple lines have been loaded.
Loading / Unloading a cross section now no longer resets the camera position.
Reloading the current project will no longer clear all loaded data.
Fixed a crash when unloading a line.
Fixed a crash when attempting to place an alignment pin with no alignment loaded.

Jan 02
Version 1.0

Initial Release

Previous 3 versions

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