topology builder

Question

I have a Mapinfo Tab file of Points that have an Attribute called 'Code'.

Data contained in this field is in the format of ABC# SL or ABC# EL.

What I need to do is create a line between Nodes whos attributes match e.g. ABC1 SL and ABC1 EL.

SL stands for Start Line and the EL stands for End Line.

Thanks

Shane

takashi · Accepted Answer

Hi Shane,

I would use the StringSearcher, Sorter and PointConnector with the following parameter settings.

StringSearcher: Split the Code into 2 parts.

Attribute: Code

Regular Expression: ^(.+)(SL|EL)$

Matched Parts Attribute: _parts

_parts{0} contains "ABC# ", _parts{1} contains "SL" or "EL".

Sorter: Sort the points by the Code (front part) and SL -> EL order.

Attribute | Alpha/Num | Order

_parts{0} | Alphabetic | Ascending

_parts{1} | Alphabetic | Descending

Point Connector: Connect points grouped by the Code (front part).

Connection Break Attributes: _parts{0}

Hope this helps. Takashi

Sign up