hoef data frame has 25 rows and 5 columns.
The data consists of a uniformity trial for which artificial treatment effects were assign to the plots.
This data frame contains the following columns:
x-coordinate of the plot.
y-coordinate of the plot.
the artificial data.
the treatment number.
the data from the uniformity trial, without the treatment effect.
The treatment effects assign to the plots are:
Treatment 1: tau1 = 0
Treatment 2: tau2 = -3
Treatment 3: tau3 = -5
Treatment 4: tau4 = 6
Treatment 5: tau5 = 6
Ver Hoef, J.M. & Cressie, N. (1993) Spatial statistics: analysis of field experiments. In Scheiner S.M. and Gurevitch, J. (Eds) Design and Analysis of Ecological Experiments. Chapman and Hall.
hoef.geo <- as.geodata(hoef, covar.col=4) summary(hoef) summary(hoef.geo) points(hoef.geo, cex.min=2, cex.max=2, pt.div="quintiles")
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.