I have a huge data file; a sample is listed below. I am using the package
data table to process the file and I am stuck on one issue and need some
feedback. I used fread to create a data table. Then I divided the data
table (named File1) into 10 general subsets using common table commands
such as:
AAA <- File1[Num<5&day>15]
BBB <- File1[Num>15&day<10]
?..
?..
?..
?..
?..
?..
I wanted to divide and count each of the above subsets based on a set of
parameters common to all subsets. I did the following to go through each
subset and it works:
For (I in 1: length (AAA)) {
aa <- c(AAA[color==?green?&grade==?a?,month==?Januray?
.N],[
AAA[color==?green?&grade==?b?& month==?June?? .N])
}
The question: I don?t want to have a separate loop for each subset (10
loops). Instead, I was hoping to have 2 nested loops in the form below:
For (I in 1:N)){
For (j in 1:M){
}
}
Sample
Num
Color
Grade
Value
Month
Day
1
yellow
A
20
May
1
2
green
B
25
June
2
3
green
A
10
April
3
4
black
A
17
August
3
5
red
C
5
December
5
6
orange
D
0
January
13
7
orange
E
12
January
5
8
orange
F
11
February
8
9
orange
F
99
July
23
10
orange
F
70
May
7
11
black
A
77
June
11
12
green
B
87
April
33
13
black
A
79
August
9
14
green
A
68
December
14
15
black
C
90
January
31
16
green
D
79
January
11
17
black
E
101
February
17
18
red
F
90
July
21
19
red
F
112
February
13
20
red
F
101
July
20
[[alternative HTML version deleted]]
There's a lot that doesn't make sense here. I think what you need to do is produce a small, reproducible example, post that with dput() and state your question more clearly - including what you have tried and what didn't work. You'll probably be amazed how quickly you will get good advice if _you_only_follow_the_posting_guide_. B.> On May 2, 2017, at 12:35 PM, Ek Esawi <esawiek at gmail.com> wrote: > > I have a huge data file; a sample is listed below. I am using the package > data table to process the file and I am stuck on one issue and need some > feedback. I used fread to create a data table. Then I divided the data > table (named File1) into 10 general subsets using common table commands > such as: > > > > AAA <- File1[Num<5&day>15] > > BBB <- File1[Num>15&day<10] > > ?.. > > ?.. > > ?.. > > ?.. > > ?.. > > ?.. > > > > I wanted to divide and count each of the above subsets based on a set of > parameters common to all subsets. I did the following to go through each > subset and it works: > > For (I in 1: length (AAA)) { > > aa <- c(AAA[color==?green?&grade==?a?,month==?Januray? .N],[ > AAA[color==?green?&grade==?b?& month==?June?? .N]) > > } > > > > The question: I don?t want to have a separate loop for each subset (10 > loops). Instead, I was hoping to have 2 nested loops in the form below: > > > > For (I in 1:N)){ > > For (j in 1:M){ > > > > } > > } > > > > Sample > > > Num > > Color > > Grade > > Value > > Month > > Day > > 1 > > yellow > > A > > 20 > > May > > 1 > > 2 > > green > > B > > 25 > > June > > 2 > > 3 > > green > > A > > 10 > > April > > 3 > > 4 > > black > > A > > 17 > > August > > 3 > > 5 > > red > > C > > 5 > > December > > 5 > > 6 > > orange > > D > > 0 > > January > > 13 > > 7 > > orange > > E > > 12 > > January > > 5 > > 8 > > orange > > F > > 11 > > February > > 8 > > 9 > > orange > > F > > 99 > > July > > 23 > > 10 > > orange > > F > > 70 > > May > > 7 > > 11 > > black > > A > > 77 > > June > > 11 > > 12 > > green > > B > > 87 > > April > > 33 > > 13 > > black > > A > > 79 > > August > > 9 > > 14 > > green > > A > > 68 > > December > > 14 > > 15 > > black > > C > > 90 > > January > > 31 > > 16 > > green > > D > > 79 > > January > > 11 > > 17 > > black > > E > > 101 > > February > > 17 > > 18 > > red > > F > > 90 > > July > > 21 > > 19 > > red > > F > > 112 > > February > > 13 > > 20 > > red > > F > > 101 > > July > > 20 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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.
Hi Ek,
I think you want your example to look like this:
Sample<-read.table(text"Num Color Grade Value Month Day
1 yellow A 20 May 1
2 green B 25 June 2
3 green A 10 April 3
4 black A 17 August 3
5 red C 5 December 5
6 orange D 0 January 13
7 orange E 12 January 5
8 orange F 11 February 8
9 orange F 99 July 23
10 orange F 70 May 7
11 black A 77 June 11
12 green B 87 April 33
13 black A 79 August 9
14 green A 68 December 14
15 black C 90 January 31
16 green D 79 January 11
17 black E 101 February 17
18 red F 90 July 21
19 red F 112 February 13
20 red F 101 July 20",
header=TRUE)
AAA<-Sample[Sample$Num < 5 & Sample$Day < 3,]
BBB<-Sample[Sample$Num > 15 & Sample$Day > 13,]
for(i in 1:length(AAA)) {
for(j in 1:length(BBB)) {
...
}
}
except in data.table notation. However, I can't work out what you want
to do in the loop.
Jim
On Wed, May 3, 2017 at 2:35 AM, Ek Esawi <esawiek at gmail.com>
wrote:> I have a huge data file; a sample is listed below. I am using the package
> data table to process the file and I am stuck on one issue and need some
> feedback. I used fread to create a data table. Then I divided the data
> table (named File1) into 10 general subsets using common table commands
> such as:
>
>
>
> AAA <- File1[Num<5&day>15]
>
> BBB <- File1[Num>15&day<10]
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
>
>
> I wanted to divide and count each of the above subsets based on a set of
> parameters common to all subsets. I did the following to go through each
> subset and it works:
>
> For (I in 1: length (AAA)) {
>
> aa <- c(AAA[color==?green?&grade==?a?,month==?Januray?
.N],[
> AAA[color==?green?&grade==?b?& month==?June?? .N])
>
> }
>
>
>
> The question: I don?t want to have a separate loop for each subset (10
> loops). Instead, I was hoping to have 2 nested loops in the form below:
>
>
>
> For (I in 1:N)){
>
> For (j in 1:M){
>
>
>
> }
>
> }
>
>
>
> Sample
>
>
> Num
>
> Color
>
> Grade
>
> Value
>
> Month
>
> Day
>
> 1
>
> yellow
>
> A
>
> 20
>
> May
>
> 1
>
> 2
>
> green
>
> B
>
> 25
>
> June
>
> 2
>
> 3
>
> green
>
> A
>
> 10
>
> April
>
> 3
>
> 4
>
> black
>
> A
>
> 17
>
> August
>
> 3
>
> 5
>
> red
>
> C
>
> 5
>
> December
>
> 5
>
> 6
>
> orange
>
> D
>
> 0
>
> January
>
> 13
>
> 7
>
> orange
>
> E
>
> 12
>
> January
>
> 5
>
> 8
>
> orange
>
> F
>
> 11
>
> February
>
> 8
>
> 9
>
> orange
>
> F
>
> 99
>
> July
>
> 23
>
> 10
>
> orange
>
> F
>
> 70
>
> May
>
> 7
>
> 11
>
> black
>
> A
>
> 77
>
> June
>
> 11
>
> 12
>
> green
>
> B
>
> 87
>
> April
>
> 33
>
> 13
>
> black
>
> A
>
> 79
>
> August
>
> 9
>
> 14
>
> green
>
> A
>
> 68
>
> December
>
> 14
>
> 15
>
> black
>
> C
>
> 90
>
> January
>
> 31
>
> 16
>
> green
>
> D
>
> 79
>
> January
>
> 11
>
> 17
>
> black
>
> E
>
> 101
>
> February
>
> 17
>
> 18
>
> red
>
> F
>
> 90
>
> July
>
> 21
>
> 19
>
> red
>
> F
>
> 112
>
> February
>
> 13
>
> 20
>
> red
>
> F
>
> 101
>
> July
>
> 20
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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.
Thank you both Boris and Jim. Thank you, Boris, for advising to read the
posting guide; I had and I just did.
Jim?s idea is exactly what I want; however, I could not pass sset1, sset2,
etc. to the j nested loop and collect the results in an vector.
Here attached my code, file, and my question which should be clear now. The
question again is instead of using separate loops for each sset1 and sset2,
I want one nested loop? Because I have at least 10 subsets
(sset1,sset2,sset3?..sset10).
Thanks again, EK
-------The code------
install.packages("data.table")
library(data.table)
File1 <- "C:/Users/SampleData.csv"
DT <- fread(File1)
sset1 <- DT[Num<10&Day<10]
sset2 <- DT[Num>10&Day<15]
# Count how many combinations of A,B,C,D,E,F in each subset
for ( i in 1:length(sset1)){
aa <- c(sset1[Grade=="A",.N],sset1[Grade=="D",.N])
bb <- c(sset1[Grade=="B",.N],sset1[Grade=="F",.N])
cc <- c(sset1[Grade=="C",.N],sset1[Grade=="A",.N])
counts <- c(aa, bb,cc)
}
for ( i in 1:length(sset2)){
aa1 <- c(sset2[Grade=="A",.N],sset2[Grade=="D",.N])
bb1 <- c(sset2[Grade=="B",.N],sset2[Grade=="F",.N])
cc1 <- c(sset2[Grade=="C",.N],sset2[Grade=="A",.N])
counts <- c(aa1,bb1,cc1)
}
-----------The File------------
Num Color Grade Value Month Day
1: 1 yellow A 20 May 1
2: 2 green B 25 June 2
3: 3 green A 10 April 3
4: 4 black A 17 August 3
5: 5 red C 5 December 5
6: 6 orange D 0 January 13
7: 7 orange E 12 January 5
8: 8 orange F 11 February 8
9: 9 orange F 99 July 23
10: 10 orange F 70 May 7
11: 11 black A 77 June 11
12: 12 green B 87 April 33
13: 13 black A 79 August 9
14: 14 green A 68 December 14
15: 15 black C 90 January 31
16: 16 green D 79 January 11
17: 17 black E 101 February 17
18: 18 red F 90 July 21
19: 19 red F 112 February 13
20: 20 red F 101 July 20
On Tue, May 2, 2017 at 12:35 PM, Ek Esawi <esawiek at gmail.com> wrote:
> I have a huge data file; a sample is listed below. I am using the package
> data table to process the file and I am stuck on one issue and need some
> feedback. I used fread to create a data table. Then I divided the data
> table (named File1) into 10 general subsets using common table commands
> such as:
>
>
>
> AAA <- File1[Num<5&day>15]
>
> BBB <- File1[Num>15&day<10]
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
> ?..
>
>
>
> I wanted to divide and count each of the above subsets based on a set of
> parameters common to all subsets. I did the following to go through each
> subset and it works:
>
> For (I in 1: length (AAA)) {
>
> aa <- c(AAA[color==?green?&grade==?a?,month==?Januray?
> .N],[ AAA[color==?green?&grade==?b?& month==?June?? .N])
>
> }
>
>
>
> The question: I don?t want to have a separate loop for each subset (10
> loops). Instead, I was hoping to have 2 nested loops in the form below:
>
>
>
> For (I in 1:N)){
>
> For (j in 1:M){
>
>
>
> }
>
> }
>
>
>
> Sample
>
>
> Num
>
> Color
>
> Grade
>
> Value
>
> Month
>
> Day
>
> 1
>
> yellow
>
> A
>
> 20
>
> May
>
> 1
>
> 2
>
> green
>
> B
>
> 25
>
> June
>
> 2
>
> 3
>
> green
>
> A
>
> 10
>
> April
>
> 3
>
> 4
>
> black
>
> A
>
> 17
>
> August
>
> 3
>
> 5
>
> red
>
> C
>
> 5
>
> December
>
> 5
>
> 6
>
> orange
>
> D
>
> 0
>
> January
>
> 13
>
> 7
>
> orange
>
> E
>
> 12
>
> January
>
> 5
>
> 8
>
> orange
>
> F
>
> 11
>
> February
>
> 8
>
> 9
>
> orange
>
> F
>
> 99
>
> July
>
> 23
>
> 10
>
> orange
>
> F
>
> 70
>
> May
>
> 7
>
> 11
>
> black
>
> A
>
> 77
>
> June
>
> 11
>
> 12
>
> green
>
> B
>
> 87
>
> April
>
> 33
>
> 13
>
> black
>
> A
>
> 79
>
> August
>
> 9
>
> 14
>
> green
>
> A
>
> 68
>
> December
>
> 14
>
> 15
>
> black
>
> C
>
> 90
>
> January
>
> 31
>
> 16
>
> green
>
> D
>
> 79
>
> January
>
> 11
>
> 17
>
> black
>
> E
>
> 101
>
> February
>
> 17
>
> 18
>
> red
>
> F
>
> 90
>
> July
>
> 21
>
> 19
>
> red
>
> F
>
> 112
>
> February
>
> 13
>
> 20
>
> red
>
> F
>
> 101
>
> July
>
> 20
>
>
>
[[alternative HTML version deleted]]
You seem to be unaware of the "aggregate" data processing concept. There are many ways to accomplish aggregation, but I am not fluent in data.table methods but knowing the concept is the first step. Perhaps look closely at [1], or Google for data table aggregation yourself? [1] https://www.r-bloggers.com/efficient-aggregation-and-more-using-data-table/amp/ -- Sent from my phone. Please excuse my brevity. On May 3, 2017 8:17:21 AM PDT, Ek Esawi <esawiek at gmail.com> wrote:>Thank you both Boris and Jim. Thank you, Boris, for advising to read >the >posting guide; I had and I just did. > >Jim?s idea is exactly what I want; however, I could not pass sset1, >sset2, >etc. to the j nested loop and collect the results in an vector. > >Here attached my code, file, and my question which should be clear now. >The >question again is instead of using separate loops for each sset1 and >sset2, >I want one nested loop? Because I have at least 10 subsets >(sset1,sset2,sset3?..sset10). > >Thanks again, EK > > >-------The code------ > >install.packages("data.table") >library(data.table) >File1 <- "C:/Users/SampleData.csv" >DT <- fread(File1) >sset1 <- DT[Num<10&Day<10] >sset2 <- DT[Num>10&Day<15] > ># Count how many combinations of A,B,C,D,E,F in each subset >for ( i in 1:length(sset1)){ > aa <- c(sset1[Grade=="A",.N],sset1[Grade=="D",.N]) > bb <- c(sset1[Grade=="B",.N],sset1[Grade=="F",.N]) > cc <- c(sset1[Grade=="C",.N],sset1[Grade=="A",.N]) > counts <- c(aa, bb,cc) >} > >for ( i in 1:length(sset2)){ > aa1 <- c(sset2[Grade=="A",.N],sset2[Grade=="D",.N]) > bb1 <- c(sset2[Grade=="B",.N],sset2[Grade=="F",.N]) > cc1 <- c(sset2[Grade=="C",.N],sset2[Grade=="A",.N]) > counts <- c(aa1,bb1,cc1) >} > >-----------The File------------ > > Num Color Grade Value Month Day > 1: 1 yellow A 20 May 1 > 2: 2 green B 25 June 2 > 3: 3 green A 10 April 3 > 4: 4 black A 17 August 3 > 5: 5 red C 5 December 5 > 6: 6 orange D 0 January 13 > 7: 7 orange E 12 January 5 > 8: 8 orange F 11 February 8 > 9: 9 orange F 99 July 23 >10: 10 orange F 70 May 7 >11: 11 black A 77 June 11 >12: 12 green B 87 April 33 >13: 13 black A 79 August 9 >14: 14 green A 68 December 14 >15: 15 black C 90 January 31 >16: 16 green D 79 January 11 >17: 17 black E 101 February 17 >18: 18 red F 90 July 21 >19: 19 red F 112 February 13 >20: 20 red F 101 July 20 > >On Tue, May 2, 2017 at 12:35 PM, Ek Esawi <esawiek at gmail.com> wrote: > >> I have a huge data file; a sample is listed below. I am using the >package >> data table to process the file and I am stuck on one issue and need >some >> feedback. I used fread to create a data table. Then I divided the >data >> table (named File1) into 10 general subsets using common table >commands >> such as: >> >> >> >> AAA <- File1[Num<5&day>15] >> >> BBB <- File1[Num>15&day<10] >> >> ?.. >> >> ?.. >> >> ?.. >> >> ?.. >> >> ?.. >> >> ?.. >> >> >> >> I wanted to divide and count each of the above subsets based on a set >of >> parameters common to all subsets. I did the following to go through >each >> subset and it works: >> >> For (I in 1: length (AAA)) { >> >> aa <- c(AAA[color==?green?&grade==?a?,month==?Januray? >> .N],[ AAA[color==?green?&grade==?b?& month==?June?? .N]) >> >> } >> >> >> >> The question: I don?t want to have a separate loop for each subset >(10 >> loops). Instead, I was hoping to have 2 nested loops in the form >below: >> >> >> >> For (I in 1:N)){ >> >> For (j in 1:M){ >> >> >> >> } >> >> } >> >> >> >> Sample >> >> >> Num >> >> Color >> >> Grade >> >> Value >> >> Month >> >> Day >> >> 1 >> >> yellow >> >> A >> >> 20 >> >> May >> >> 1 >> >> 2 >> >> green >> >> B >> >> 25 >> >> June >> >> 2 >> >> 3 >> >> green >> >> A >> >> 10 >> >> April >> >> 3 >> >> 4 >> >> black >> >> A >> >> 17 >> >> August >> >> 3 >> >> 5 >> >> red >> >> C >> >> 5 >> >> December >> >> 5 >> >> 6 >> >> orange >> >> D >> >> 0 >> >> January >> >> 13 >> >> 7 >> >> orange >> >> E >> >> 12 >> >> January >> >> 5 >> >> 8 >> >> orange >> >> F >> >> 11 >> >> February >> >> 8 >> >> 9 >> >> orange >> >> F >> >> 99 >> >> July >> >> 23 >> >> 10 >> >> orange >> >> F >> >> 70 >> >> May >> >> 7 >> >> 11 >> >> black >> >> A >> >> 77 >> >> June >> >> 11 >> >> 12 >> >> green >> >> B >> >> 87 >> >> April >> >> 33 >> >> 13 >> >> black >> >> A >> >> 79 >> >> August >> >> 9 >> >> 14 >> >> green >> >> A >> >> 68 >> >> December >> >> 14 >> >> 15 >> >> black >> >> C >> >> 90 >> >> January >> >> 31 >> >> 16 >> >> green >> >> D >> >> 79 >> >> January >> >> 11 >> >> 17 >> >> black >> >> E >> >> 101 >> >> February >> >> 17 >> >> 18 >> >> red >> >> F >> >> 90 >> >> July >> >> 21 >> >> 19 >> >> red >> >> F >> >> 112 >> >> February >> >> 13 >> >> 20 >> >> red >> >> F >> >> 101 >> >> July >> >> 20 >> >> >> > > [[alternative HTML version deleted]] > >______________________________________________ >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >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.
Hi better to present us your data by dput, so they can be directly used.> dput(dat)dat <- structure(list(Num = 1:20, Color = structure(c(5L, 2L, 2L, 1L, 4L, 3L, 3L, 3L, 3L, 3L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 4L, 4L, 4L ), .Label = c("black", "green", "orange", "red", "yellow"), class = "factor"), Grade = structure(c(1L, 2L, 1L, 1L, 3L, 4L, 5L, 6L, 6L, 6L, 1L, 2L, 1L, 1L, 3L, 4L, 5L, 6L, 6L, 6L), .Label = c("A", "B", "C", "D", "E", "F"), class = "factor"), value = c(20L, 25L, 10L, 17L, 5L, 0L, 12L, 11L, 99L, 70L, 77L, 87L, 79L, 68L, 90L, 79L, 101L, 90L, 112L, 101L), Month = structure(c(8L, 7L, 1L, 2L, 3L, 5L, 5L, 4L, 6L, 8L, 7L, 1L, 2L, 3L, 5L, 5L, 4L, 6L, 4L, 6L), .Label = c("April", "August", "December", "February", "January", "July", "June", "May"), class = "factor"), Day = c(1L, 2L, 3L, 3L, 5L, 13L, 5L, 8L, 23L, 7L, 11L, 33L, 9L, 14L, 31L, 11L, 17L, 21L, 13L, 20L)), .Names = c("Num", "Color", "Grade", "value", "Month", "Day"), class = "data.frame", row.names = c(NA, -20L))>I do not know your exact intention and data.table commands. You can get some summary numbers simply by table(dat$Grade[dat$Num<10 & dat$Day<10]) A B C D E F 3 1 1 0 1 1 It is probably preferable to obtain logical vectors for Num and Day before starting tabulation. Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Ek Esawi > Sent: Wednesday, May 3, 2017 5:17 PM > To: r-help at r-project.org > Subject: Re: [R] nested for loop with data table > > Thank you both Boris and Jim. Thank you, Boris, for advising to read the > posting guide; I had and I just did. > > Jim?s idea is exactly what I want; however, I could not pass sset1, sset2, etc. > to the j nested loop and collect the results in an vector. > > Here attached my code, file, and my question which should be clear now. > The question again is instead of using separate loops for each sset1 and > sset2, I want one nested loop? Because I have at least 10 subsets > (sset1,sset2,sset3?..sset10). > > Thanks again, EK > > > -------The code------ > > install.packages("data.table") > library(data.table) > File1 <- "C:/Users/SampleData.csv" > DT <- fread(File1) > sset1 <- DT[Num<10&Day<10] > sset2 <- DT[Num>10&Day<15] > > # Count how many combinations of A,B,C,D,E,F in each subset for ( i in > 1:length(sset1)){ > aa <- c(sset1[Grade=="A",.N],sset1[Grade=="D",.N]) > bb <- c(sset1[Grade=="B",.N],sset1[Grade=="F",.N]) > cc <- c(sset1[Grade=="C",.N],sset1[Grade=="A",.N]) > counts <- c(aa, bb,cc) > } > > for ( i in 1:length(sset2)){ > aa1 <- c(sset2[Grade=="A",.N],sset2[Grade=="D",.N]) > bb1 <- c(sset2[Grade=="B",.N],sset2[Grade=="F",.N]) > cc1 <- c(sset2[Grade=="C",.N],sset2[Grade=="A",.N]) > counts <- c(aa1,bb1,cc1) > } > > -----------The File------------ > > Num Color Grade Value Month Day > 1: 1 yellow A 20 May 1 > 2: 2 green B 25 June 2 > 3: 3 green A 10 April 3 > 4: 4 black A 17 August 3 > 5: 5 red C 5 December 5 > 6: 6 orange D 0 January 13 > 7: 7 orange E 12 January 5 > 8: 8 orange F 11 February 8 > 9: 9 orange F 99 July 23 > 10: 10 orange F 70 May 7 > 11: 11 black A 77 June 11 > 12: 12 green B 87 April 33 > 13: 13 black A 79 August 9 > 14: 14 green A 68 December 14 > 15: 15 black C 90 January 31 > 16: 16 green D 79 January 11 > 17: 17 black E 101 February 17 > 18: 18 red F 90 July 21 > 19: 19 red F 112 February 13 > 20: 20 red F 101 July 20 > > On Tue, May 2, 2017 at 12:35 PM, Ek Esawi <esawiek at gmail.com> wrote: > > > I have a huge data file; a sample is listed below. I am using the > > package data table to process the file and I am stuck on one issue and > > need some feedback. I used fread to create a data table. Then I > > divided the data table (named File1) into 10 general subsets using > > common table commands such as: > > > > > > > > AAA <- File1[Num<5&day>15] > > > > BBB <- File1[Num>15&day<10] > > > > ?.. > > > > ?.. > > > > ?.. > > > > ?.. > > > > ?.. > > > > ?.. > > > > > > > > I wanted to divide and count each of the above subsets based on a set > > of parameters common to all subsets. I did the following to go through > > each subset and it works: > > > > For (I in 1: length (AAA)) { > > > > aa <- c(AAA[color==?green?&grade==?a?,month==?Januray? > > .N],[ AAA[color==?green?&grade==?b?& month==?June?? .N]) > > > > } > > > > > > > > The question: I don?t want to have a separate loop for each subset (10 > > loops). Instead, I was hoping to have 2 nested loops in the form below: > > > > > > > > For (I in 1:N)){ > > > > For (j in 1:M){ > > > > > > > > } > > > > } > > > > > > > > Sample > > > > > > Num > > > > Color > > > > Grade > > > > Value > > > > Month > > > > Day > > > > 1 > > > > yellow > > > > A > > > > 20 > > > > May > > > > 1 > > > > 2 > > > > green > > > > B > > > > 25 > > > > June > > > > 2 > > > > 3 > > > > green > > > > A > > > > 10 > > > > April > > > > 3 > > > > 4 > > > > black > > > > A > > > > 17 > > > > August > > > > 3 > > > > 5 > > > > red > > > > C > > > > 5 > > > > December > > > > 5 > > > > 6 > > > > orange > > > > D > > > > 0 > > > > January > > > > 13 > > > > 7 > > > > orange > > > > E > > > > 12 > > > > January > > > > 5 > > > > 8 > > > > orange > > > > F > > > > 11 > > > > February > > > > 8 > > > > 9 > > > > orange > > > > F > > > > 99 > > > > July > > > > 23 > > > > 10 > > > > orange > > > > F > > > > 70 > > > > May > > > > 7 > > > > 11 > > > > black > > > > A > > > > 77 > > > > June > > > > 11 > > > > 12 > > > > green > > > > B > > > > 87 > > > > April > > > > 33 > > > > 13 > > > > black > > > > A > > > > 79 > > > > August > > > > 9 > > > > 14 > > > > green > > > > A > > > > 68 > > > > December > > > > 14 > > > > 15 > > > > black > > > > C > > > > 90 > > > > January > > > > 31 > > > > 16 > > > > green > > > > D > > > > 79 > > > > January > > > > 11 > > > > 17 > > > > black > > > > E > > > > 101 > > > > February > > > > 17 > > > > 18 > > > > red > > > > F > > > > 90 > > > > July > > > > 21 > > > > 19 > > > > red > > > > F > > > > 112 > > > > February > > > > 13 > > > > 20 > > > > red > > > > F > > > > 101 > > > > July > > > > 20 > > > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. 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