For the case with specified gamma, the Gamma parameter can be specified in two ways
· Constant (in domain)
· Varying in domain
For the case with values varying in domain you have to prepare a data file containing the Gamma parameter before you set up the spectral wave simulation. The file must be a 2D unstructured data file (dfsu) or a 2D grid data file (dfs2). The area in the data file must cover the model area. If a dfsu-file is used piecewise constant interpolation is used to map the data, while if a dfs2-file is used bilinear interpolation is used.