Dear R people,
I have a matrix like this:
var1 var2 var3 var4
a1 7.1 7.2 8.1 8.2
a2 10.5 10.6 ... ...
a3
b1
b2
b3
b4
c1
c2
...
The matrix row names are "a1", "a2", ...... and the matrix column
names are "var1", "var2", "var3" and "var4". Now I want to reshape
this data into a longitudinal-formatted one like this:
subject seq time resp
a 1 1 7.1
a 1 2 7.2
a 1 3 8.1
a 1 4 8.2
a 2 1 10.5
a 2 2 10.6
a 2 3 ...
a 2 4 ...
a 3 1 ...
a 3 2
a 3 3
a 3 4
b 1 1
b 1 2
b 1 3
b 1 4
b 2 1
b 2 2
b 2 3
b 2 4
... ... ...
... ... ...
... ... ...
I always met errors when using "reshape" function. Could anyone give
me an idea how to do it?
Many thanks to you,
Frank
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