This is a collection of various IDS (Ideographic Description Sequence) data.
IDS (Ideographic Description Sequence) is a way to describe the structure of CJK Unified ideographs.
The IDS consists of IDCs (Ideographic Description Characters), namely "⿰" (U+2FF0) to "⿻" (U+2FFB), and DCs (Description Characters), that are usually ideographs.
IDS is quite important information for ideographs, as it may be possible to identify ideographs from them.
However, there may be ambiguity for encoding IDS. Therefore, tools to normalize IDS and identify the ideographs would be important. IDS tool is one of such example.
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Compatibility ideographs, whose IDS is not equal to their corresponding unified ideographs, may be used as DCs. (e.g. ⻀)
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Following non-ideographs may be used as DCs (for now). "αℓ△⺀⺄⺆⺈⺊⺌⺍⺶⺸⺻⺼〇〢キサ㇀㇉㇢㇞"
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Encircled numerics ① ～ ⑳ represents unencoded DCs. Number denotes its stroke count. This would be useful when calculating total strokes of ideographs.
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'&CDP-XXXX;' entity reference notation (CDP stands for "Chinese Document Processing lab") is inherited from CHISE project. For details of usable entity references, refer an article on CDP at GlyphWiki. They can be converted to Unicode BMP PUA (Privae Use Area) characters by Microsoft Big5 to PUA conversion table, and HanaMinAFDKO Font support these glyphs in PUA.
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IDS of compatibility ideographs may sometimes have compatibility ideographs as DCs, by mean of clarifying the difference of their structures compared with corresponding unified ideographs.
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"G", "T", "J", "K", "V", etc. signs with brackets after IDS indicate that such IDS is specific to each columns of UCS code charts. "A" indicates AJ1-6 shapes, and "X" indicates virtual shape that is not actually appeared in the UCS specification, but possibly matches to that code points according to Annex S of UCS. Some of such shapes may appear in OS-equipped fonts such as MingLiu, MS-Mincho and SimSun, or several dictionaries such as Dai-Kanwa-Jiten.
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'ids.txt' is derived from CHISE project. License follows their terms.
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All other data are distributed uner GPLv2.