In the case where the profile is specified by a xy file you have to prepare an ascii file with extension .xy containing the distance from the shoreline and z-level for all points in the cross-shore profile. The file format is two (or three) space separated floats (real numbers) for the distance and z-level on separate lines for each of the points (in case of three columns in the file distance and z-level are derived from the first two columns). The measuring unit of the distance and z-level is the same as the unit defined for the mesh projection.
In the case where the profile data is specified by a dfs2 file you have to prepare a grid series file (dfs2) containing items defining the distance from the shoreline and the z-level for all points in the cross-shore profile and along the coastline. The individual profile is defined along the x-axis and the given shoreline points along the y-axis. The number of points on the x-axis of the dfs2 file must correspond to the number of points in a profile, and the number of points on the y-axis must correspond to the number of points on the coastline-2.
In case the profiles vary in time the data must cover the complete simulation period. The time step of the input data file does not, however, have to be the same as the time step of the simulation. A linear interpolation will be applied if the time steps differ.