[R] Factors to Columns

[David martin]

 > str(data)
'data.frame':	250 obs. of  3 variables:
  $ student: chr  "A" "B" "C" "D" ...
  $ data   : num  20.2 20.4 22.5 22.1 23.3 ...
  $ param   : Factor w/ 4 levels "AGE","SCHOOL",..: 1 1 1 1 1 1 1 1 1 1


Hi , i would like to split the dataframe so that each level of param is 
a column
At the end it should look like


	AGE	SCHOOL ...
A	20.2	20.4
B	22.5	22.1
C	23.1	24
D	22	22.8
..


is i use that contingency table:
table(data$student,data$param) i will have such a similar table of what 
i want, except that i don't need counts but real data.

How can i split levels of the dataframe into columns ??

thanks