Dear useR,
I have a data matrix, it has n columns, each column is a two-level variable
with entires -1 and +1. They are randomly generated, now I want to order
them like (for example, 5 columns case)
- - - - -
- - - - -
.................
(first several rows are the samples with all variables in low level)
+ - - - -
+ - - - -
.............................
- + - - -
+ + - - -
+ + + + +
Is there any function in R that could let me do this order by Var1 then
order by Var2 then...order by Var n
Thanks very much in advance!
Best,
Leon
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