R help - Aug 2014 - extract descriptive stats for categorial data from dataframe

Dear R-List,

I want to have descriptive stats in a special form and cannot figure out a nice
solution.

df<-as.data.frame(cbind(i1=rep("+"),i2=rep("+",10),i3=rep("-",10),i4=c(rep("-",2),"0",rep("-",7)),i5=rep("+",10),i6=c(rep("-",9),"+"),i7=c(rep("+",4),"0",rep("+",5)),i8=c(rep(0,4),rep("+",3),"-","+","-"),i9=c(rep("+",5),"-",rep("+",2),rep(0,2))))

now I want the categories as var labels arranged in cols with IDs as first col
and then frequencies for each category. Something like this:

var   +   -    0
i1    10  0    0
i2    10  0    0
i3     0 10    0
i4     0  9    1
i5    10  0    0
i6     1  9    0
i7     9  0    1
i8     4  2    4
i9     7  1    2

I tried different combinations of

freq<-as.data.frame(df<-lapply(df,table))

but was not very successful.

I would be very thankful for an easy solution which is probably to obvious for
me to spot.

Thank you very much.

Best wishes

Alain
	[[alternative HTML version deleted]]

On Tue, 5 Aug 2014 11:36:36 AM Alain D. wrote:
> Dear R-List,
> 
> I want to have descriptive stats in a special form and cannot figure 
out a
> nice solution.
> 
> df<-
as.data.frame(cbind(i1=rep("+"),i2=rep("+",10),i3=rep("-",10),i4=c(rep("
> 
-",2),"0",rep("-",7)),i5=rep("+",10),i6=c(rep("-",9),"+"),i7=c(rep("+",4),"0
> 
",rep("+",5)),i8=c(rep(0,4),rep("+",3),"-","+","-"),i9=c(rep("+",5),"-",rep(
> "+",2),rep(0,2))))
> 
> now I want the categories as var labels arranged in cols with IDs as 
first
> col and then frequencies for each category. Something like this:
> 
> var   +   -    0
> i1    10  0    0
> i2    10  0    0
> i3     0 10    0
> i4     0  9    1
> i5    10  0    0
> i6     1  9    0
> i7     9  0    1
> i8     4  2    4
> i9     7  1    2
> 
> I tried different combinations of
> 
> freq<-as.data.frame(df<-lapply(df,table))
> 
> but was not very successful.
> 
> I would be very thankful for an easy solution which is probably to 
obvious
> for me to spot.
> 
Hi Alain,
You can get pretty much what you want if your variables are all factors 
with the same levels like this:

varlevels<-c("+","-","0","1")
df<-data.frame(
 i1=factor(rep("+",10),levels=varlevels),
 i2=factor(rep("+",10),levels=varlevels),
 i3=factor(rep("-",10),levels=varlevels),
 i4=factor(c(rep("-",2),"0",rep("-",7)),levels=varlevels),
 i5=factor(rep("+",10),levels=varlevels),
 i6=factor(c(rep("-",9),"+"),levels=varlevels),
 i7=factor(c(rep("+",4),"0",rep("+",5)),levels=varlevels),
 i8=factor(c(rep(0,4),rep("+",3),"-","+","-"),levels=varlevels),
 i9=factor(c(rep("+",5),"-",rep("+",2),rep(0,2)),levels=varlevels))
library(prettyR)
describe(df,horizontal=TRUE,fname.space=10)

Jim

You could try:
lv <- levels(unique(unlist(df)))
as.data.frame(t(apply(df, 2, function(x) table(factor(x, levels=lv)))))
??? +? - 0
i1 10? 0 0
i2 10? 0 0
i3? 0 10 0
i4? 0? 9 1
i5 10? 0 0
i6? 1? 9 0
i7? 9? 0 1
i8? 4? 2 4
i9? 7? 1 2
A.K.




On Tuesday, August 5, 2014 5:36 AM, Alain D. <dialvac-r at yahoo.de>
wrote:
Dear R-List,

I want to have descriptive stats in a special form and cannot figure out a nice
solution.

df<-as.data.frame(cbind(i1=rep("+"),i2=rep("+",10),i3=rep("-",10),i4=c(rep("-",2),"0",rep("-",7)),i5=rep("+",10),i6=c(rep("-",9),"+"),i7=c(rep("+",4),"0",rep("+",5)),i8=c(rep(0,4),rep("+",3),"-","+","-"),i9=c(rep("+",5),"-",rep("+",2),rep(0,2))))

now I want the categories as var labels arranged in cols with IDs as first col
and then frequencies for each category. Something like this:

var?  +?  -? ? 0
i1? ? 10? 0? ? 0
i2? ? 10? 0? ? 0
i3? ?  0 10? ? 0
i4? ?  0? 9? ? 1
i5? ? 10? 0? ? 0
i6? ?  1? 9? ? 0
i7? ?  9? 0? ? 1
i8? ?  4? 2? ? 4
i9? ?  7? 1? ? 2

I tried different combinations of

freq<-as.data.frame(df<-lapply(df,table))

but was not very successful.

I would be very thankful for an easy solution which is probably to obvious for
me to spot.

Thank you very much.

Best wishes

Alain
??? [[alternative HTML version deleted]]

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