Create a database with the Harmonic Constituents. You can get these from
, for example. You should note whether time in in local or UTC/GMT, and if the amplitudes are in feet or meters.
You must have the fields "AMPLITUDE", "PHASE", and "SPEED". Others are optional and can have any names. In the example above, periods of the constituents were computed in Excel.
You can remove the zero amplitude constituents (note that CONST 8 to 10 are missing above)
, Oceanography, Tide prediction
Pick length of prediction in hours
Pick time interval in hours
Results will be in a CSV file in the same directory as the database
Open the CVS file and MICRODEM will convert to a DBF.
Prediction file created. It has time in Hours, days, and years. There is currently no relationship to real time.
Graph (Plotted with
, 2d Graphs, 2D graph simple)
Last revised 7/6/2011