SnakeGrid Projector for FME Desktop

A coordinate system with minimal scale factor and height distortion
Technology No. 32-021

The SnakeGrid family of products, developed by UCL Business Ltd, provides a comprehensive solution to a significant problem in engineering surveying – the design of a coordinate system with minimal scale factor and height distortion even when projects extend for many hundreds of kilometres.

Product Specification

SnakeGrid Projector permits transformation of data within FME Desktop, in any of its supported formats, including CAD, raster, point clouds, shape files, etc. to and from the SnakeGrid coordinate systems.  Conversions may be made with geodetic latitude/longitude, the US State Plane, British National Grid, the London Survey Grid and all UTM zones.

Also included is the SnakeGrid Object plugin for FME.  This permits advanced coordinate reprojection options: reproject by vertex, reproject by object centroid and reproject by centroid of all objects.  The first option will potentially change the size and shape of each object, however the vertices will be correctly located.  The last two will maintain object size and shape however with the proviso that object vertices will be incorrectly positioned in the new projection.  SnakeGrid Object will deliver an HTML report analysing resulting object distortion.

SnakeGrid Projector is a plugin for FME Desktop versions 2012 onwards.  There are two installers: FME Windows 32bit and FME Windows 64bit.

For further information please see


SnakeGrid Projector Demonstration

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SnakeGrid Object Demonstration

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  • swap_vertical_circlelibrary_booksReferences (1)
    1. Preston, Iliffe (2007), The Snake Projection: A Customised Grid for Rail Projects, Survey Review , 39, Iss 304
  • swap_vertical_circlecloud_downloadDownloads (3)
    SnakeGrid Projector for FME Desktop 32bit v1.1.1*
    size: 2 MB, type: application/zip
    SnakeGrid Projector for FME Desktop 64bit v1.1.1*
    size: 2 MB, type: application/zip
    SnakeGrid Projector v1.1.1 User Guide
    size: 1 MB, type: application/pdf
    Files marked with an asterix (*) can only be downloaded by users that have the appropriate product licence. The licence must be active and you must be logged into your account.
SnakeGrid Non-Exclusive Licence (Commercial Use)

Term: 12 months

Price per seat:
£500.00 excl. VAT