Michael
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
WC ASMR SMR AF U
[1,] 9.20 233.6647 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?
--
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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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