Difference between revisions of "Mapping Table:ID Line Format"

Latest revision as of 18:11, 20 May 2008

The ID lines consist of three parts, the ID number, the description, and the parameter values. The main difference between the ID lines for the non-Richards’ equation tables and the ID lines for the Richards’ equation tables is that the Richards equations tables assign parameters for three different soil layers, each layer having its’ own parameter set. In the ID lines for the Richards’ equations, the two lines that do not begin with the ID and the description can have up to 86 characters. For each ID line, the ID must fill the first six spaces. There may be, and usually is, white space after the ID number, to fill the remaining six spaces. Likewise, the description must be 80 characters long. There may be as much white space in the 80 characters as needed. The 80 characters following the ID are only for the description of the ID and are not read by GSSHA. The 80-character length is mainly for the program WMS, which outputs two 40-character descriptions. The ID and description are followed by a number of parameter values dependent on the table type. All values for a table must be present, even if they are not used in a particular model. When unused values must be assigned, any valid floating point number, including 0.0, may be input. The amount of spacing between the values is not important, but it is usually visually helpful to align the parameters.

GSSHA User's Manual

12 Mapping Table

12.1     File Description

12.2     Index Maps

12.3     Grid-based Mapping Tables

12.4     ID Line Format

12.5     Example Mapping Table File

12.6     Stream Mapping Tables

12.7     Sediment Erosion Mapping Tables

12.7     Constituent Mapping Tables