Dear Jari,
Thanks a lot for your reply.
Let me describe more about my dataset: it consists of count data for samples,
and shows how many copies of a certain bacteria are in a sample. There are 92
samples (rows), and about 3500 kinds of bacteria (columns). Variable 1 (Var1)
is a factor indicating the types of samples, and Var2 is a factor showing the
locations the samples were collected. 'dist' is an unweighted UniFrac distance
matrix.
I probably have figured out how to fix the error: I had only 1 level for Var2.
When I tried my command on a bigger table with 2 levels for Var2, it worked.
However, I am not sure why specifically I got the 'subscript out of bounds'
error previously.
Regards,
Zhao
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