Input must be in columns as: [X] for 1D, [X] [Y] for 2D, [X] [Y] [Z] for 3D data. Each record must be in a separate row, column separator can be either space, tab or semicolon, decimal separator can be either point or comma. Lines beginning with a character (field names) are excluded. If the last dimension has different units and meaning than X and Y (e.g. means date and time) then it must contain floating point numbers representing days from the beginning of year 1900 (Serial Date format used in Excel). The last column can contain separate codes for source points and target points. In the last case, target points are thinned around source points.