[R] applying an operation for several dataframes

2008-11-22 Thread Georg Ehret
Dear R community,
I am trying to apply a simple operation to several dataframes (e.g.
nrow) and cannot get the looping to work. My objective is to get an output
that indicates me the number of rows for every dataframe.

 c
  V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
1  1 11 21 31 41 51 61 71 81  91
2  2 12 22 32 42 52 62 72 82  92
3  3 13 23 33 43 53 63 73 83  93
4  4 14 24 34 44 54 64 74 84  94
5  5 15 25 35 45 55 65 75 85  95
 cc
   V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
1   1 11 21 31 41 51 61 71 81  91
2   2 12 22 32 42 52 62 72 82  92
3   3 13 23 33 43 53 63 73 83  93
4   4 14 24 34 44 54 64 74 84  94
5   5 15 25 35 45 55 65 75 85  95
6   6 16 26 36 46 56 66 76 86  96
7   7 17 27 37 47 57 67 77 87  97
8   8 18 28 38 48 58 68 78 88  98
9   9 19 29 39 49 59 69 79 89  99
10 10 20 30 40 50 60 70 80 90 100
 names-c(c,cc)
 for(i in names){nrow(i)}

Thank you!
Georg.
*
Georg Ehret
[EMAIL PROTECTED]
Geneva University Hospital
Switzerland

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Re: [R] applying an operation for several dataframes

2008-11-22 Thread jim holtman
?get

names - c('c', 'cc')
for (i in names){
print(nrow(get(i)))
}


On Sat, Nov 22, 2008 at 4:06 PM, Georg Ehret [EMAIL PROTECTED] wrote:
 Dear R community,
I am trying to apply a simple operation to several dataframes (e.g.
 nrow) and cannot get the looping to work. My objective is to get an output
 that indicates me the number of rows for every dataframe.

 c
  V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
 1  1 11 21 31 41 51 61 71 81  91
 2  2 12 22 32 42 52 62 72 82  92
 3  3 13 23 33 43 53 63 73 83  93
 4  4 14 24 34 44 54 64 74 84  94
 5  5 15 25 35 45 55 65 75 85  95
 cc
   V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
 1   1 11 21 31 41 51 61 71 81  91
 2   2 12 22 32 42 52 62 72 82  92
 3   3 13 23 33 43 53 63 73 83  93
 4   4 14 24 34 44 54 64 74 84  94
 5   5 15 25 35 45 55 65 75 85  95
 6   6 16 26 36 46 56 66 76 86  96
 7   7 17 27 37 47 57 67 77 87  97
 8   8 18 28 38 48 58 68 78 88  98
 9   9 19 29 39 49 59 69 79 89  99
 10 10 20 30 40 50 60 70 80 90 100
 names-c(c,cc)
 for(i in names){nrow(i)}

 Thank you!
 Georg.
 *
 Georg Ehret
 [EMAIL PROTECTED]
 Geneva University Hospital
 Switzerland

[[alternative HTML version deleted]]

 __
 R-help@r-project.org mailing list
 https://stat.ethz.ch/mailman/listinfo/r-help
 PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
 and provide commented, minimal, self-contained, reproducible code.




-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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and provide commented, minimal, self-contained, reproducible code.