Yes, but.... [🇷 for BE/BA]

posted by mittyri – Russia, 2024-02-23 20:39 (56 d 15:40 ago) – Posting: # 23879
Views: 649

Hi ElMaestro,

may be I misunderstood your

❝ is not full rank. Neither is does it contain a column for every level of every factor.

The solution you proposed with qr() does not give a column for every level of every factor
> (MakeFullRank(model.matrix(~ f + g)))
   Q       
1  1 0 0 1 0
2  1 0 1 1 0
3  1 1 0 0 1
4  1 0 1 1 0
5  1 0 0 0 0
6  1 0 0 0 1
7  1 0 1 0 0
8  1 1 0 0 0
9  1 0 1 1 0
10 1 1 0 0 0
11 1 0 0 0 1
12 1 1 0 0 1

Kind regards,
Mittyri

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