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HW3 familiar with R

HW3 familiar with R - m apply(m,1,sum 1 apply(m,2,mean...

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BioC 2808 HW3 familiar with R due 10 Dec., 2009 11:59pm Try issuing each of the R commands below in the order that they appear. After doing so and studying the resulting output, explain in words what each command or set of commands does. In some cases you may wish to try some other examples to make sure you understand the command. Q1 (5 pts) 1:12 c(9,5,3) x=c(1:6,9,5,3) x y=2*x-3 y y[2] y[-2] y[1:3] y[-(1:3)] sort(y) y m=matrix(y,nrow=3) m m[1,3] m[1,] m[,1] m[1:2,c(1,3)] m[,1]0 m[m[,1]0,] m=rbind(m,c(14,15,21))

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Unformatted text preview: m apply(m,1,sum) 1 apply(m,2,mean) plot(m[,1],m[,2]) plot(m[,1],m[,2],pch=16) plot(m[,1],m[,2],pch=16,col=4) lines(m[,1],m[,2],col=2) Q2 (5 pts) library(lattice) data(lattice) ?lattice require(stats) Depth <- equal.count(quakes\$depth, number=8, overlap=.1) xyplot(lat ~ long | Depth, data = quakes) update(trellis.last.object(), strip = strip.custom(strip.names = TRUE, strip.levels = TRUE), par.strip.text = list(cex = 0.75), aspect = "iso")...
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HW3 familiar with R - m apply(m,1,sum 1 apply(m,2,mean...

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