TRANSCO Process

To access this process:

Enter "TRANSCO" into the Command Line and press <ENTER>.
Display the Find Command screen, locate TRANSCO and click Run.

See this process in the Command Table.

Process Overview

Transform coordinates from one coordinate system to another. This is similar to the transform-coordinates command but instead works on data files, not loaded data objects.

Before coordinate transformation is performed, the input file and parameters are checked, and if the transformation cannot be completed with the specified inputs, a message displays indicating failure. This may be due to coordinate system not being recognised, or coordinates not being compatible with the coordinate systems selected.

@SOURCE and @TARGET must reference valid Well Known Transformation (WKT) codes. These codes are listed on the transform-coordinate command screen and TRANSCO process references must match these codes precisely. For example, "EPSG:8321" is fine but "8321" or "EPSG 8321" will cause the process to abort.

Input Files

Name	Description	I/O Status	Required	Type
IN	Input file. Must contain at least X , Y and Z explicit numeric fields.	Input	Yes	Undefined

Output Files

Name	I/O Status	Required	Type	Description
OUT	Output	No	Undefined	Output file. Will contain updated coordinate fields.

Fields

Name	Description	Source	Required	Type	Default
X/Y/Z	X/Y/Z coordinate field in IN.	IN	Yes	Undefined	Undefined

Parameters

Name	Description	Required	Default	Range	Values
NORMAL	Normalise axis order: =0 : Do not normalise axis(0) =1 : Normalise axis order(1)	No	1	0,1	0,1
SOURCE	Expected source coordinate key. This value must exactly match the Coordinate System Selection Code from the interactive transform-coordinates screen.	Yes	Undefined	Undefined	Any valid WKT code including both alphanumeric and numeric code elements, for example; "EPSG:4326".
TARGET	Expected target coordinate key. This value must exactly match the Coordinate System Selection Code from the interactive transform-coordinates screen.	Yes	Undefined	Undefined	Any valid WKT code including both alphanumeric and numeric code elements, for example; "EPSG:4326".

Example

!TRANSCO

&IN(mySamples), &OUT(myTransformedSamples), X(XPT), Y(YPT),Z(ZPT),

@NORMAL = 1, @SOURCE(EPSG:27700), @TARGET(EPSG:4326)