by "radical" i meant part, not as in the actual radical.
I doubt there's a reason. There's no "official" way to break down kanji into their "base" parts.
Well there‘s already 自 and 并 listed so also listing 首 would be kind of redundant. Then 道 itself should also be listed. It seems like they‘re going for smallest possible parts.
if that were the case, i would have no problem with it, but it's inconsistent, seeing as 道 has 首 listed as a part.
The information is probably from the Kradfile. The only thing I could find on their explanation page is: „The decomposition is based on what can be seen in typical kanji glyphs. Elements themselves can be further subdivided. For example, 舌 is an element and so is 口, so the elements in 話 are <口 舌 言>.“
From this it would seem like all possible components should be included and not including 首 is indeed an oversight. Maybe contact the authors directly?
Yeah, I would say that this is an oversight in the data file, thanks for pointing it out.
I have contacted Jim Breen, who maintains the radical data, and asked him to correct it.
You could always use the ideographic description sequence database instead.
導 从寸,道声。“寸”与“手”意思相近。本义:以手牵引,引导
導 radical is 寸 is right by its original explanation.
Like 人手, 〖manpower〗∶...人力...〖hand〗∶专门做某种工作的人
手 is controlled by brain, but here brain is not in.
why does 導 not have 首 listed as a radical?
i mean, it's right there so i don't get if that's a bug or if there's some deeper reason :P