Soil Profile Data Example 1
Soil profile data from Pinnacles National Monument, CA.
A data frame with 60 observations on the following 21 variables.
a numeric vector
a character vector
a numeric vector
a numeric vector
a character vector
a character vector
a character vector
a character vector
a numeric vector
a character vector
a character vector
a character vector
a character vector
a character vector
a numeric vector
a character vector
a numeric vector
a numeric vector
http://casoilresource.lawr.ucdavis.edu/
data(sp1) # convert colors from Munsell to hex-encoded RGB sp1$soil_color <- with(sp1, munsell2rgb(hue, value, chroma)) # promote to SoilProfileCollection depths(sp1) <- id ~ top + bottom site(sp1) <- ~ group # re-sample each profile into 1 cm (thick) depth slices # for the variables 'prop', 'name', 'soil_color' # result is a SoilProfileCollection object s <- slice(sp1, 0:25 ~ prop + name + soil_color) # plot, note slices plot(s) # aggregate all profiles along 1 cm depth slices, # using data from column 'prop' s1 <- slab(sp1, fm= ~ prop) # check median & IQR library(lattice) xyplot(top ~ p.q50 + p.q25 + p.q75, data=s1, type='S', horizontal=TRUE, col=1, lty=c(1,2,2), panel=panel.superpose, ylim=c(110,-5), asp=2)
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