For gradient channels only, the cross-section properties at the upstream end are applied. This is an unsupported feature.
3.12.41d_nwk Attributes
Table 4 .10 presents the attributes for 1d_nwk layers.
Table 4.10 1D Model Network (1d_nwk) Attribute Descriptions
No.
GIS Attribute
Description
Type
1
ID
Unique identifier up to 12 characters in length. It may contain any character except for quotes and commas, and cannot be blank. As a general rule, spaces and special characters (eg. “\”) should be avoided, although they are accepted. The same ID can be used for a channel and a node, but no two nodes and no two channels can have the same ID.
Since Build 2005-05-AN, digitised nodes can have their ID left blank and TUFLOW will assign an ID.
Note: Prior to Build 2002-06-AD, ID was a positive integer number. 1d_nwk layers with ID as an integer do not have to be changed to a character field, unless non-integer IDs are to be used.
Char(12)
2
Channel_Type
Node or Pit: Since Build 2005-05-AN, used to specify a Pit Channel as one of C, R or W as per Table 4 .9.
Not used although recommended to type in “Node” for easy identification.
Channel: The channel type as specified using the flags in Table 4 .9.
Char(4)
3
Ignore
If set to true (ie. “T”), the node or channel is ignored and makes no contribution to the final network. Otherwise set to “F”.
