Folks,
I recently was given a simulated data set like the following subset:
sim_sub<-structure(list(V11 = c(0.01, 0, 0, 0.01, 0, 0.01, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0), V12 = c(0, 0, 0, 0.01, 0.03, 0,
0, 0, 0, 0, 0, 0.01, 0, 0.01, 0, 0, 0, 0, 0, 0.04), V13 = c(0,
0, 0, 0.01, 0, 0, 0, 0, 0, 0.01, 0, 0, 0, 0, 0.01, 0, 0, 0, 0,
0.01), V14 = c(0, 0.01, 0.01, 0.01, 0.01, 0, 0, 0, 0, 0.03, 0,
0, 0.01, 0.01, 0.04, 0.01, 0.02, 0, 0.01, 0.03), V15 = c(0, 0.01,
0, 0, 0.01, 0, 0, 0, 0.01, 0.02, 0.01, 0, 0, 0.01, 0, 0, 0, 0.01,
0.01, 0.04), V16 = c(0, 0, 0, 0.03, 0.02, 0.01, 0, 0, 0.02, 0.02,
0, 0.02, 0.02, 0, 0.01, 0.01, 0, 0, 0.03, 0.01), V17 = c(0, 0.01,
0, 0.01, 0, 0, 0, 0.01, 0.05, 0.03, 0, 0.01, 0, 0.02, 0.02, 0,
0, 0.01, 0.02, 0.04), V18 = c(0, 0.01, 0, 0.03, 0.03, 0, 0, 0,
0.02, 0.01, 0, 0.02, 0.01, 0.02, 0.03, 0.02, 0, 0, 0.04, 0.04
), V19 = c(0, 0.01, 0.01, 0.02, 0.07, 0, 0, 0, 0.04, 0.01, 0.02,
0, 0, 0, 0.04, 0, 0, 0, 0, 0.05), V20 = c(0, 0, 0, 0.01, 0.04,
0.01, 0, 0, 0.02, 0.04, 0.01, 0, 0.02, 0, 0.03, 0, 0.02, 0.01,
0.03, 0.03)), .Names = c("V11", "V12", "V13", "V14", "V15", "V16",
"V17", "V18", "V19", "V20"), row.names = c(NA, 20L), class = "data.frame")
> sim_sub
V11 V12 V13 V14 V15 V16 V17 V18 V19 V20
1 0.01 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
2 0.00 0.00 0.00 0.01 0.01 0.00 0.01 0.01 0.01 0.00
3 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.01 0.00
4 0.01 0.01 0.01 0.01 0.00 0.03 0.01 0.03 0.02 0.01
5 0.00 0.03 0.00 0.01 0.01 0.02 0.00 0.03 0.07 0.04
6 0.01 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.01
7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
8 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00
9 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.02 0.04 0.02
10 0.00 0.00 0.01 0.03 0.02 0.02 0.03 0.01 0.01 0.04
11 0.00 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.02 0.01
12 0.00 0.01 0.00 0.00 0.00 0.02 0.01 0.02 0.00 0.00
13 0.00 0.00 0.00 0.01 0.00 0.02 0.00 0.01 0.00 0.02
14 0.00 0.01 0.00 0.01 0.01 0.00 0.02 0.02 0.00 0.00
15 0.00 0.00 0.01 0.04 0.00 0.01 0.02 0.03 0.04 0.03
16 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.02 0.00 0.00
17 0.00 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.02
18 0.00 0.00 0.00 0.00 0.01 0.00 0.01 0.00 0.00 0.01
19 0.00 0.00 0.00 0.01 0.01 0.03 0.02 0.04 0.00 0.03
20 0.00 0.04 0.01 0.03 0.04 0.01 0.04 0.04 0.05 0.03
Every 5 rows represents one block of simulated data.
What would be the best way to average the blocks?
My way was to reshape sim_sub, average over the columns and then reshape back
like so:
> matrix(colSums(matrix(t(sim_sub), byrow = TRUE, ncol = 50)), byrow = TRUE,
> ncol = 10)/4
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 0.0050 0.0000 0.0000 0.0025 0.0025 0.005 0.0000 0.0050 0.0050 0.0050
[2,] 0.0000 0.0025 0.0000 0.0075 0.0025 0.005 0.0050 0.0075 0.0025 0.0050
[3,] 0.0000 0.0000 0.0000 0.0050 0.0025 0.005 0.0050 0.0025 0.0025 0.0075
[4,] 0.0025 0.0050 0.0025 0.0075 0.0075 0.020 0.0250 0.0275 0.0150 0.0150
[5,] 0.0000 0.0175 0.0075 0.0275 0.0175 0.015 0.0225 0.0275 0.0425 0.0350
How bad is "t(sim_sub)" in the above?
Thanks for your time,
KW
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