Attribute map of segment map

Functionality

By creating an attribute map of a segment map, the class name or ID of each segment in the original map is replaced by the value, class or ID found in a certain column in an attribute table.

A segment map using a Class or ID domain, can have extra attribute information on the classes or identifiers in the map. These attributes are stored in columns in an attribute table. The attribute table can be linked to the map to which it refers, or to the domain of the map. You can check whether an attribute table is linked to the segment map or to its domain through the Properties dialog box of the map or the domain.

Example of creating an attribute map:

In the pictures below, an attribute map is created for the average discharge (m3/sec) in October for rivers C, L, and T.

Input map:	Attribute table:


Output attribute map:

Input map requirements:

the input map needs to be a map with a domain of the Class or ID type;
the table, from which you want to choose a column, should use the same domain as the map;
the attribute table can be linked to the map or to its domain;
the attribute table should have one or more columns with attribute values, classes or IDs.

An attribute map can be created from any column with a value, class or ID domain, but not from a column using domain String.

Domain and coordinate system of output map:

The output map uses the same domain as the specified attribute column.

The output map uses the same coordinate system and coordinate boundaries as the input map.

Tips:

This operation creates a permanent attribute map. To temporarily display an attribute map, you can select the option 'Attribute' in the Display Options dialog box when displaying a segment map.
The colors and line widths in which an attribute map is displayed, depend on the domain of the specified attribute column:

if you used a domain Class attribute column and when this domain already has a user-defined representation, then this representation is automatically selected in the Display Options dialog box which appears when you display the attribute map. In the Display Options dialog box, you can also select another existing representation or create a new representation by clicking the create button.
if you used a domain Value attribute column, you can either select one of the standard value representations or create your own representation by clicking the create button in the Display Options dialog box which appears when you display the attribute map.

You can also create attribute maps of raster maps, attribute maps of polygon maps and attribute maps of point maps.