Displaying 3 results from an estimated 3 matches for "actcode".
2004 Oct 06
8
Dataframe manipulation question
Hello,
I have a data frame that has three fields.
Resp# ActCode ProdUsed
100 3 2
100 3 2
100 4 3
100 4 3
101 3 6
102 2 1
102 3 1
103 5 1
103 5...
2004 Nov 29
1
Seeking help with a simple loop construction
Hello,
I have a df, pp, with five variables:
> nobs(pp)
q10_1 q10_2 q10_3 q10_4 actcode
1620 1620 1620 1620 1620
I want to create a loop to run four xtabs (the first four variables above by the fifth) and then store the results in a matrix. Below I make my intent clear by showing the output of one xtab which is inserted into a matrix.
> a <- xtabs(q10_1 ~ act...
2004 Oct 21
0
Hmisc: Using stratified weighted means (wtd.mean) within a function
Hello list,
I have the following function which, as you can see, uses mean:
meanratings <- round(apply(stack03[,c(102:121)],2,function(x) (tapply(x ,actcode, mean, na.rm=T))), digits=1)
The above function yields the following output:
q27a q27b q27c q27d q27e q27f q27g q27h q27i q27j q27k q27l q27m q27o q27p
1 7.8 8.1 7.7 7.9 7.9 NaN NaN 8.4 7.8 7.0 7.6 NaN NaN 7.1 6.0
2 8.3 8.6 8.5 8.2 8.3 NaN NaN 8.8 NaN 7.5 NaN 7.7...