search for: yavg

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2013 Mar 06
8
Understanding lm-based analysis of fractional factorial experiments
...e the coefficients. So, I do > leaf <- read.table("/ifi/bifrost/a03/kjekje/fag/experimental-planning/book-datasets/LeafSpring table 5.2.dat", col.names=c("B", "C", "D", "E", "Q", paste("r", 1:3, sep=""), "yavg", "ssq", "lnssq")) > leaf.lm <- lm(yavg ~ B * C * D * E * Q, data=leaf) > leaf.lm Call: lm(formula = yavg ~ B * C * D * E * Q, data = leaf) Coefficients: (Intercept) B+ C+ D+ E+ 7.54000 0.07003...
2011 Jun 03
2
Y error bars, dates on the X-axis
Dear forum, Does anyone know any functions for plotting vertical error bars, if the x-axis variable is a date? I can produce a pretty plot with dates on the x-axis, if I don't want to include error bars. I can also produce a nice plot with error bars, if I just use Julian days for the x-axis, but I'd much rather have the actual dates. I have tried writing my own function, plotCI