Hi
Try the following...
df - data.frame(A = c(1,1,3,2,2,3,3),
B = c(2,1,1,2,7,8,7),
K = c(a.1, d.2, f.3,
a.1, k.4, f.9, f.5))
df$ID-rownames(df)
df$K-as.character(as.character(df$K))
changefunction-function(z)
{
tmp - lapply(split(z, z[,4]),
function(x) within(x, if(A==3)B - 5 ))
dat2-tmp
Dear all,
for each A == 3 in 'df' I would like to change the variables B and K.
My result should be the whole df and not the subset (A==3)...
df - data.frame(A = c(1,1,3,2,2,3,3),
B = c(2,1,1,2,7,8,7),
K = c(a.1, d.2, f.3,
a.1, k.4, f.9,
Arrg, sorry - of course I don't want *new* variables. So this is my
correct example:
df - data.frame(A = c(1,1,3,2,2,3,3),
B = c(2,1,1,2,7,8,7),
K = c(a.1, d.2, f.3,
a.1, k.4, f.9, f.5))
x1 - within(df[df$A ==3, ], {
B - 5
Try this:
df[df$A == 3, c('B', 'K')] - with(df[df$A == 3, c('B', 'K')], cbind(5,
gsub(f, m, K)))
On Sun, Jan 16, 2011 at 12:19 PM, Patrick Hausmann
patrick.hausm...@uni-bremen.de wrote:
Arrg, sorry - of course I don't want *new* variables. So this is my correct
example:
df - data.frame(A
On 16/01/2011 9:13 AM, Patrick Hausmann wrote:
Dear all,
for each A == 3 in 'df' I would like to change the variables B and K.
My result should be the whole df and not the subset (A==3)...
df- data.frame(A = c(1,1,3,2,2,3,3),
B = c(2,1,1,2,7,8,7),
K =
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