[R] barplot and missing values?

[Dan Bolser]

I want to include missing values in my barplot to get the correct x-axis,
for example,

x <- c(1,2,3,4, 9)
y <- c(2,4,6,8,18)

barplot(y)

The above looks wrong because the last height in y should be a long way
over.

So I want to do something like...

x <- c(1,2,3,4,5,6,7,8, 9)
y <- c(2,4,6,8,0,0,0,0,18)

barplot(y)

However... 

I am actually using barplot2 to use the "log='y'" function, so I can't use
zero values on a log scale...

So I need...

x <- c(1,2,3,4, 5, 6, 7, 8, 9)
y <- c(2,4,6,8,NA,NA,NA,NA,18)

barplot(y)

But that don't work.

Am I missing something?


To avoid confusion here is my data...

> dat.y.plot
   [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12]
Ho  653   80  132   10   34    3   10    0    7     2     7     7
He  139   56   69    6   24    3   11    3    2     1     2     6
attr(,"names")
 [1]
"2"   "3"   "4"   "5"   "6"   "7"   "8"   "9"   "10"  "11"  "12"  ">12"
[13] NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA    NA   
> 


And here is what I call...

barplot(dat.y.plot,
        ylim=c(0,max(dat.y.plot + 50)), # I don't like the default
        beside=T,
        names.arg=c('2','3','4','5','6','7','8','9','10','11','12','>12'),
        cex.axis=1.5,
        cex.names=1.5,
        legend=T
        )

Which is fine (except I don't know why I still need names.arg).

Then I try...


library(gregmisc)

barplot2(dat.y.plot+1, log='y',
        beside=T,
        names.arg=c('2','3','4','5','6','7','8','9','10','11','12','>12'),
        cex.axis=1.5,
        cex.names=1.5,
        legend=T
        )

Which fails because of the zero. If I try ...

dat.y.plot[dat.y.plot==0] <- NA

It fails because of the NA.

Any suggestions?