I contacted Tsai yu shan to share John's post with her. In response she emailed to me three images linked to John's posting of "a large foldout from the book" which is based on her analysis of a Sedeq shawl at the Textile Art & Craft Museum of Taichung County Cultural Center in 2004.
Yu shan sent photos of the front and back of the sample which she wove from her analysis chart of the weave which John posted and a detail from this chart where we can see "a formidable structure" which she rates very hard to weave and she is amazed that it could be woven on a traditional back strap loom. There are double warps; the green warp is a plain weave and the "blue points" showing through make the pattern.
The more I see and learn of yu shan's detailed, patient and very fine work the more I am amazed by it and admire her - and also the original weavers. Thank you John for your post and thank you yu shan for both helping us to appreciate the incredible skills involved in the creation of such a textile and protecting the legacy of its creators.
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Pamela
http://www.tribaltextiles.infoon-line tribal textiles resource