CHECKIT Process

To access this process:

Data ribbon >> Data Tools >> String Utilities >> Check Strings.
View the Find Command screen, select CHECKIT and click Run.
Enter "CHECKIT" into the Command Line and press <ENTER>.

See this process in the Command Table.

Process Overview

CHECKIT carries out validation checks on string data.

The process first renumbers all PVALUEs starting with 1 and incrementing by 1. A new string is started whenever the old PVALUE changes or when the point number (PTN) is 1. This is done in case the input file contains two or more strings with the same PVALUE.

Duplicate points within a string are identified, and the second and subsequent occurrences of any point are removed, except for the last point which can be the same as the first.

Duplicate strings are removed. This is done by summing the XP, YP and ZP coordinates for each string, and identifying strings with identical accumulated values. Therefore strings are duplicates if they have the same points, even though other attributes may be different. It is possible to define two strings which use the same set of points, but in a different order. In this particular case the method would incorrectly flag the strings as identical. If this situation is a possibility then the strings should be checked interactively in the Design Window.

The process PROPER also carries out checks on string files.

Input Files

Name	Description	I/O Status	Required	Type
IN	Input string file.	Input	Yes	String File

Example

!CHECKIT &IN(strings1),&OUT(strings2)

CHECKIT - Point and string validation

... input validation
... validating string data
... 6 duplicate points removed
... 2 duplicate strings removed

... input file strings1
contains 6 strings with a total of 129 points
... output file strings2
contains 4 strings with a total of 111 points
... process complete