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  GenStat  ~  Use of SUBMAT function to get pieces of a symmetric matrix

AndrewMc
Posted: Wed Aug 01, 2018 4:54 am Reply with quote
Joined: 28 Jul 2008 Posts: 76
Hi All

I want to get sub-triangles from a symmetric matrix. The Help has lead me to the SUBMAT function, but after reading the Help I still don't understand how to get the function to work. Does anyone have a simple example that they could show me?

For example, with a symmetric matrix with four rows:
1
2, 3
4, 5, 6
7, 8, 9, 10

I wish to get sub-triangles:
1
2, 3

and
6
9, 10


Cheers,
Andrew Mc

Andrew McLachlan
Biometrician



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