Description Usage Arguments Details See Also Examples
Draws a series of caterpillar plots, showing the residuals from the multilevel model at each level and the estimates of their confidence interval
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confint 
an object containing the output from function

ann 
default is TRUE. If set to false, suppresses the automatic annotation of residuals on the plots with a confidence interval that does not overlap with any other 
grid 
arrange the plots in a grid? (Default is TRUE) 
A caterpillar plot is a visual way of looking at the variance of the residuals at each level of a multilevel model. It can be used to see which places are contributing most to the Index of Dissimilarity net of the effects of other scales.
To aid the interpretability of the plots, the residuals are scaled by the standard error of the residuals from the OLS estimate of the index. Additionally, to avoid overplotting only a maximum of 50 residuals are shown on each plot. These are the 10 highest and lowest ranked residuals and then a sample of 30 from the remaining residuals, chosen as the ones with values that differ most from the residuals that precede them by ranking. In this way, the plots aim to preserve the tails of the ranked distribution as well as the most important break points inbetween.
When ann = TRUE
(the default) some outliers are labelled and the
percentage of the total variance due to each level is included. These
will not add up to 100
catplot
is a wrapper to plot.confintindex
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