# Transect through polygon shapefile

Copyrights (c) 2009 Johan Van de Wauw
Transect for lines and polygon shapefiles
The goal of this module is to create a transect along a line through a polygon map.
Eg
|____ST1_____!_ST2_!__ST1__!_______ST#_____|
(Soil type 1 etc...)
This is done by creating a table with the ID of each line, the distance
to the starting point and the different transects:

    |  line_id  |  start  |  end  |  code/field  |

    |    0      |    0    |  124  |     ST1      |

    |    0      |   124   |  300  |     ST2      |

    |    0      |   300   | 1223  |     ST1      |

    |    0      |  1223   | 2504  |     ST3      |

    |    1      |    0    |  200  |     ST4      |

    |   ...     |   ...   |  ...  |     ...      |

The module requires an input shape with all the line transects [Transect_Line]
and a polygon theme [Theme]. You also have to select which field you want to have in
the resulting table [Transect_Result]. This can be an ID of the polygon theme if you
want to link the tables later on, or any other field [Theme_Field].

## Parameters

Line Transect(s)
Input Shapes
Theme
Input Shapes
Theme Field
Table field
Result table
Output Table