[R] how to melt variable to one variable

[arun]

Hi,
I am not getting any errors.

data_chir <- read.table(text="N1_re N2_re N3_re
yes no no
no yes no
na yes yes
no na no",sep="",header=TRUE,stringsAsFactors=FALSE,na.strings="na")
library(reshape2)
melt(data_chir, measure.vars=c("N1_re", "N2_re"), var="zpd")
  N3_re   zpd value
1    no N1_re   yes
2    no N1_re    no
3   yes N1_re  <NA>
4    no N1_re    no
5    no N2_re    no
6    no N2_re   yes
7   yes N2_re   yes
8    no N2_re  <NA>
A.K.




On Saturday, November 23, 2013 5:02 PM, maggy yan <kiotoqq at gmail.com> wrote:

sorry, I forgot that.. the variables look like this:
N1_re N2_re N3_re
yes no no
no yes no
na ye yes
no na no



2013/11/23 arun <smartpink111 at yahoo.com>

Hi,
>You need to make a reproducible example for others to understand the error. 
> set.seed(49)
> data_chir <- data.frame(N1_re=sample(c(NA,"yes","no"),100,replace=TRUE),N2_re=sample(c(NA,"yes","no"),100,replace=TRUE),stringsAsFactors=FALSE)
> melt(data_chir, measure.vars=c("N1_re", "N2_re"), var="zpd") #no errors here.
>
>
>A.K.
>
>
>
>
>
>On Saturday, November 23, 2013 10:07 AM, maggy yan <kiotoqq at gmail.com> wrote:
>I want to make a stacked bar plot with one bar for two variables from my
>data "chir", the two variables have about 100 values like no, yes and na. I
>want to show how many no, yes and na they both have together with the
>stacked bar. I tried to melt these to variables first like this:
>
>melt1=melt(data_chir, measure.vars=c("N1_re", "N2_re"), var="zpd")
>
>but it says " arguments imply differing number of rows: 98, 196"
>
>
>maybe there is another way to make the plot without melt?
>
>thanks in advance!
>
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