1) Those are not errors, but warnings. You need to use warnings() (with the brackets) to see what they were. By typing warnings (without the brackets) you are asking R to print out the source code for the warnings() function.
2) try ?options and see option digits in that help file
Hope that helps a bit,
Gavin
Michael Rennie wrote:
Hi, there
I have a loop that is producing data, but is also generating an error message that I can't understand.
Here's the loop and the error message:
bio<-matrix(NA, ncol=9, nrow=366) W<-NULL M<- length(Day) #number of days iterated
for (i in 1:M)
+ {
+ + + if (Day[i]==1) W[i] <- Wo else W[i] <- (W[i-1]+(Gr[i]/Ef))
+ + + C<- p*CA*(W^CB)*(((comp[,3])^Xc)*(exp(Xc*(1-(comp[,3])))))*Pc
+ + ASMR<- ACT*RA*(W^RB)*(((comp[,4])^Xa)*(exp(Xa*(1-(comp[,4])))))
+ + SMR<- (ASMR/ACT)
+ + A<- (ASMR-SMR)
+ + F<- (FA*((comp[,2])^FB)*(exp(FG*p))*C)
+ + U<- (UA*((comp[,2])^UB)*(exp(UG*p))*(C-F))
+ + SDA<- (S*(C-F))
+ + Gr<- (C-(ASMR+F+U+SDA))
+ + bio<- cbind(W, C, ASMR, SMR, A, F, U, SDA, Gr)
+ + }
There were 50 or more warnings (use warnings() to see the first 50)
warnings
function (...) {
if (!(n <- length(last.warning))) return()
names <- names(last.warning)
cat("Warning message", if (n > 1) "s", ":\n", sep = "")
for (i in 1:n) {
out <- if (n == 1) names[i]
else paste(i, ": ", names[i], sep = "")
if (length(last.warning[[i]])) {
temp <- deparse(last.warning[[i]])
out <- paste(out, "in:", temp[1], if (length(temp) > 1) " ...")
}
cat(out, ..., fill = TRUE)
}
}
dimnames (bio) <-list(NULL, c
("W", "C", "ASMR", "SMR", "A", "F", "U", "SDA", "Gr"))
bio
W C ASMR SMR A F U [1,] 9.200000 233.6647 107.5640 64.50050 43.06345 31.93755 15.840142
Also, does anyone know why I might be getting differences in the same calculation between R and Excel? Is there any way to keep R from rounding your numbers, or to specify the # of decimal places you want for an element?
-- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Gavin Simpson [T] +44 (0)20 7679 5522 ENSIS Research Fellow [F] +44 (0)20 7679 7565 ENSIS Ltd. & ECRC [E] [EMAIL PROTECTED] UCL Department of Geography [W] http://www.ucl.ac.uk/~ucfagls/cv/ 26 Bedford Way [W] http://www.ucl.ac.uk/~ucfagls/ London. WC1H 0AP. %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
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