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18532
2005 Apr 18
2
Very Slow Gower Similarity Function
...vegan
package) does not accept missing values.
I think I have succeeded - my function gives me the correct values. However, now
that I'm starting to use it with real data, I realise it's very slow. It takes
more than 45 minutes on my Windows 98 machine (R 2.0.1 Patched (2005-03-29))
with a 185x32 matrix with ca 100 missing values. If anyone can suggest ways to
speed up my function I would appreciate it. I suspect having a pair of nested
for loops is the problem, but I couldn't figure out how to get rid of them.
The function is:
### Gower Similarity Matrix###
sGow <- function (mat)...