[R] subset every 5th row

arun smartpink111 at yahoo.com
Sun Jan 19 16:21:37 CET 2014


Hi Veepsirtt,
May be this helps:

dat1 <- structure(list(V2 = c(11109.75, 11135.15, 11105.85, 11099.75, 
11055.55, 11063.45, 11045.65, 11065, 11061.2, 11070.25, 11069.3, 
11076, 11081.85, 11086.4, 11086.7, 11065.6, 11071.25, 11073.15, 
11077.8, 11067.7, 11061.1, 11065.9, 11069.1, 11063.3, 11070.45, 
11074.4, 11069.4, 11063.65, 11067.05, 11070.1, 11074, 11069.6, 
11072.65, 11073.7, 11061.35, 11064.2, 11066.85, 11078.15, 11079.65, 
11079.5, 11075.9, 11066.95, 11072.55, 11068.85, 11073.5, 11067.6, 
11055.3, 11053.3, 11052.65, 11047.6, 11045.25, 11028.9, 11036.15, 
11034.3, 11044.05, 11030.65, 11036.6, 11039.75, 11035.35, 11019.05
)), .Names = "V2", class = "data.frame", row.names = c(NA, 60L
))
dat1[seq(5,nrow(dat1),by=5),,drop=FALSE]
#or
dat1[((seq(nrow(dat1))-1)%%5+1)==5,,drop=FALSE]

A.K.




On Sunday, January 19, 2014 9:40 AM, "veepsirtt at gmail.com" <veepsirtt at gmail.com> wrote:

Hi A.K sir

1,11109.75
2,11135.15
3,11105.85
4,11099.75
5,11055.55
6,11063.45
7,11045.65
8,11065
9,11061.2
10,11070.25
11,11069.3
12,11076
13,11081.85
14,11086.4
15,11086.7
16,11065.6
17,11071.25
18,11073.15
19,11077.8
20,11067.7
21,11061.1
22,11065.9
23,11069.1
24,11063.3
25,11070.45
26,11074.4
27,11069.4
28,11063.65
29,11067.05
30,11070.1
31,11074
32,11069.6
33,11072.65
34,11073.7
35,11061.35
36,11064.2
37,11066.85
38,11078.15
39,11079.65
40,11079.5
41,11075.9
42,11066.95
43,11072.55
44,11068.85
45,11073.5
46,11067.6
47,11055.3
48,11053.3
49,11052.65
50,11047.6
51,11045.25
52,11028.9
53,11036.15
54,11034.3
55,11044.05
56,11030.65
57,11036.6
58,11039.75
59,11035.35
60,11019.05
thanks
veepsirtt


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