24 lines
1,000 B
Text
24 lines
1,000 B
Text
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libtcd provides a software API for reading and writing Tide Constituent
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Database (TCD) files.
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The TCD file format and schema are used by XTide to retrieve constituent
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definitions (speeds, equilibrium arguments, and node factors), harmonic
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constants, subordinate station offsets and associated metadata for use
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in generating tide predictions.
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The TCD file format and schema were originally designed by Jan Depner
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to improve the performance of XTide and to meet additional requirements
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of the U.S. Naval Oceanographic Office (NAVO). They are now maintained
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primarily by David Flater.
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The design goals for TCD included:
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Available without installing heavy external packages.
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Efficient for indexing and loading of stations.
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Compact file format.
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Translatable without loss from legacy XTide .txt and .xml files.
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Exportable to legacy .txt and .xml formats.
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Modifiable by end user using tideEditor.
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Able to detect tampering (usually, misguided attempts to edit the
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database in a word processor).
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