# [R] how to subtotal by rows

arun smartpink111 at yahoo.com
Sat Apr 20 00:52:19 CEST 2013

```HI,

If you wanted to use colSums, may be this works:

ddply(jd1,.(fid,year),function(x) colSums(x[,-c(1,2)],na.rm=TRUE))
#  fid year rice wheat maize
#1   1 1995    5     3     2
#2   1 1996    4     2     6
#3   2 1995    3     8     4
#4   2 1996    7     6     7
A.K.

----- Original Message -----
From: arun <smartpink111 at yahoo.com>
To: Janesh Devkota <janesh.devkota at gmail.com>
Cc: R help <r-help at r-project.org>; shyam basnet <shyamabc2002 at yahoo.com>; Rui Barradas <ruipbarradas at sapo.pt>
Sent: Friday, April 19, 2013 6:25 PM
Subject: Re: [R] how to subtotal by rows

Hi Janesh,
There is a difference in output between these :
ddply(jd1,.(fid,year),colSums,na.rm=T)  #especially the first two columns
#  fid year rice wheat maize
#1   3 5985    5     3     2
#2   3 5988    4     2     6
#3   6 5985    3     8     4
#4   6 5988    7     6     7
ddply(jd1,.(fid,year),colwise(sum,na.rm=T))
#  fid year rice wheat maize
#1   1 1995    5     3     2
#2   1 1996    4     2     6
#3   2 1995    3     8     4
#4   2 1996    7     6     7
aggregate(jd1[,3:5],by=list(jd1\$year,jd1\$fid),FUN=sum,na.rm=TRUE)
#  Group.1 Group.2 rice wheat maize
#1    1995       1    5     3     2
#2    1996       1    4     2     6
#3    1995       2    3     8     4
#4    1996       2    7     6     7

A.K.

________________________________
From: Janesh Devkota <janesh.devkota at gmail.com>
To: shyam basnet <shyamabc2002 at yahoo.com>
Cc: "r-help at R-project.org" <r-help at r-project.org>
Sent: Friday, April 19, 2013 3:32 PM
Subject: Re: [R] how to subtotal by rows

You can also use this short command.

library(plyr)
ddply(jd1,.(fid,year),colSums,na.rm=T)

Janesh

On Fri, Apr 19, 2013 at 2:30 PM, Janesh Devkota <janesh.devkota at gmail.com>wrote:

> Hello Shyam,
>
> This is one way to do it
>
> fid      year     rice     wheat      maize
> 1        1995      5        NA           NA
> 1        1995      NA        3           NA
> 1        1995      NA       NA           2
> 1        1996      4        NA           NA
> 1        1996      NA        2           NA
> 1        1996      NA        NA           6
> 2        1995      3        NA           NA
> 2        1995      NA        8           NA
> 2        1995      NA        NA           4
> 2        1996      7        NA           NA
> 2        1996      NA        6           NA
> 2        1996      NA        NA           7
> jd1
>
> library(plyr)
>
> ddply(jd1,.(fid,year),summarise,
> rice=sum(rice,na.rm=T),wheat=sum(wheat,na.rm=T),maize=sum(maize,na.rm=T))
>
> Good luck
>
> Janesh
>
>
> On Fri, Apr 19, 2013 at 10:59 AM, shyam basnet <shyamabc2002 at yahoo.com>wrote:
>
>>
>>
>> Dear R-users,
>>
>> I have a dataset as like below, and I want to subtotal the values of
>> rice,wheat and maize by year for each fid.
>>
>> fid      year     rice     wheat      maize
>> ------------------------------------------------
>> 1        1995      5        NA           NA
>> 1        1995      NA        3           NA
>> 1        1995      NA       NA           2
>> 1        1996      4        NA           NA
>> 1        1996      NA        2           NA
>> 1        1996      NA        NA           6
>> 2        1995      3        NA           NA
>> 2        1995      NA        8           NA
>> 2        1995      NA        NA           4
>> 2        1996      7        NA           NA
>> 2        1996      NA        6           NA
>> 2        1996      NA        NA
>> 7-----------------------------------------------
>>
>> And, my output should look like below:
>>
>> fid      year     rice     wheat      maize
>> 1        1995      5        3           2
>> 1        1996      4        2           6
>>
>> 2        1995      3        8           4
>> 2        1996      7        6           7I am looking for some ideas or
>> r-codes on resolving my problem.
>> I appreciate your kind help,
>>
>>
>> Thanks a lot,
>>
>> Sincerely yours,
>> Shyam
>> Nepal
>>         [[alternative HTML version deleted]]
>>
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>

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