Displaying 2 results from an estimated 2 matches for "_sums".
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sums
2009 May 23
1
create vectors within a double loop
...sum) one for each column in the
"classification"-"thresholds" objects.
The code
# loop over "classifications"
for (x in classifications) {
# loop over sequence 1 to 10
for (i in 1:10)
# store sum's per "source" column
assign ( (paste ( x, "_sums", sep = "" )[i],
sum ( !is.na (
get ( paste ( x, "_thresholds", sep = "" ) )[ ,i]
)
)
)
}
The problem
The above piece of code gives me 10 new vectors but with only 1 value
(e.g. the last derived from the loop) _instead_ of 10.
Questions...
2008 Oct 06
1
Need to calculate within- and between- run CV
Dear R-helpers,
I have a dataset named "qu", organized as follows:
Sample Run Replicate Value
1 1 1 25
1 1 2 40
1 1 3 33
1 1 4 29
1 2 1 37
1 2 2 44
1 2 3 45
1 3 1 25
1 3 2 40
1 4 1 33
1 4 2 29
1 4 3 25
2 ...
Basically, a sample was run on an assay multiple times within a single
day. Each of these results is "Replicate". Then run was repeated several
times in