search for: yield2

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2006 Jul 07
2
dotplot (lattice) with panel.segments and groups
...panel.dotplot' call (commented) generates the error 'Error in NextMethod("[") : argument "subscripts" is missing, with no default'. The other problem is that the colors alternate between the levels of the 'site' variable, rather than 'year'. barley$yield2 <- with(barley, yield + 5) dotplot(site ~ yield | variety, data=barley, groups=year, yield2=barley$yield2, col=c("gray", "black"), panel=function(x, y, subscripts, yield2, ...) { ## panel.dotplot(x, y, ...) panel.segments(x, as.numeric...
2002 Jun 13
2
text and expressions in labels
...#39;m having difficulty combining text and an expression in the same label. I just trying to get Yield (kg ha-1) and have the -1 as superscript. What I came up with doesn't work. I'm stuck at trying to concatenate it with any other regular text. yield1 = "Yield (kg ha" yield2 = expression(^-1) yield3 = ")" ylabel = paste(yield1, yield2, yield3) boxplot(yield.kgha.st~env,data=lsmeans1, boxwex=0.3, main='Chinese Hybrids', ylim=c(0,5300), sub='', ylab=ylabel, xlab='') any help appreciated, Josh -.-.-.-.-.-.-.-.-.-...
2004 Mar 17
0
NLS question:Quadratic plus plateau fit
...termine Economical Optimum Nitrogen Rates. The segmented (quadratic + plateau) model only works with some y's, in some cases I get a "singular gradient" error. I'll appreciate any ideas in how to solve the singular gradient error. Thanks, Jose # The following code works using yield2 in the nls model but not using yield. # Economical constants, nitrogen price in dollars per lb and corn price in dollars per bushel nprice <- 0.17 cprice <- 2.25 ratio <- nprice/cprice # Example data, nrate <- c(0,60,90,120,150,180) yield2 <- c(161.7,187.1,188.5,196.6,196.0,196.5...
2009 Nov 10
3
HEEELP!!!!
...ymbol is not in the keyboard, so I select it from spetial characters, and then i selected with shift an <>key, and still, it doesn?t works I attached th file with the data. i hope you can help me!!!!! Ana. -------------- next part -------------- FERTIL YIELD YIELDM VARIETY SEX DBH FLOWERS YIELD2 1 6.27 25.12 1 2 174 234 6.27 1 5.36 17.25 1 1 171 110 5.36 1 6.39 26.42 1 2 212 512 6.39 1 4.85 16.08 1 1 187 133 4.85 1 5.99 22.15 1 2 227 1107 5.99 1 7.14 15.92 1 1 274 624 7.14 1 5.08 40.25 2 2 86 8 5.08 1 4.07 35.25 2 2 161 333 4.07 1 4.35 31.98 2 1 285 637 4.35 1 4.95 36.52 2 1 182 225 4.95 2...