[R] Problem with range()

[Sarah Goslee]

Hi Colin,

You should always check the help for your function:
?range says:
     range(..., na.rm = FALSE)

Arguments:

     ...: any ‘numeric’ or character objects.

   na.rm: logical, indicating if ‘NA’'s should be omitted.

So for example:
> x <- c(1, 2, NA, 3)
> range(x)
[1] NA NA
> range(x, na.rm=TRUE)
[1] 1 3


Sarah


On Wed, Feb 1, 2012 at 7:48 PM, Colin Wahl <biowahl at gmail.com> wrote:
> Hello,
> I'm using range do define boundaries for a linear model, so the line I
> graph is only graphed for the range of data. There are NAs in the
> data, but I dont remember this being a problem before. I typed
> na.action=na.omit anyway, which has usually solved any NA issues in
> the past. Any idea why R cant do vector functions for these data?
> Solution?
>
> Thanks,
> Colin Wahl
> M.S. Biology candidate
> Western Washington University
>
> fit<-lm(sandcomb ~ CCEC25)
> z<-predict(fit, data.frame(CCEC25=range(CCEC25)))
> lines(range(CCEC25), z, lty=2, lwd=0.75, col="grey51")
>
>
>> is.vector(CCEC25)
> [1] TRUE
>
>> is.numeric(CCEC25)
> [1] TRUE
>
>> range(CCEC25)
> [1] NA NA
>
>> CCEC25
>  [1]   375.8  8769.0      NA  4197.0      NA 36880.0  4167.0 13100.0  3694.0
> [10] 51420.0 30660.0 30850.0  4076.0      NA 59450.0 16050.0      NA 65480.0
> [19]  2101.0 16390.0  5968.0 11330.0  9112.0  8326.0
>
>> sessionInfo()
> R version 2.14.1 (2011-12-22)
> Platform: i386-apple-darwin9.8.0/i386 (32-bit)
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> loaded via a namespace (and not attached):
> [1] grid_2.14.1      lattice_0.20-0   lme4_0.999375-42 Matrix_1.0-2
> [5] nlme_3.1-102     stats4_2.14.1    tools_2.14.1
>


-- 
Sarah Goslee
http://www.functionaldiversity.org