Problem with range()

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Colin Wahl
Sent: Wednesday, February 01, 2012 4:48 PM
To: r-help at r-project.org
Subject: [R] Problem with range()

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