# boxplot.lengths: Stratum Lengths Boxplot In spMC: Continuous-Lag Spatial Markov Chains

## Description

Produce box-and-whisker plots of the stratum lengths.

## Usage

 ```1 2``` ```## S3 method for class 'lengths' boxplot(x, ..., log = FALSE, zeros.rm = TRUE) ```

## Arguments

 `x` an object of the class `lengths`, typically with the output of the function `getlen`. `...` other arguments to pass to the function `boxplot`. `log` a logical value. If `TRUE`, the logarithm of the stratum lengths will be plotted. It is `FALSE` by default. `zeros.rm` a logical value. If `FALSE`, the box-and-whisker will be drawn by including zero values. It is `TRUE` by default.

## Details

The box-and-whisker plots give some information about the distribution of the stratum lengths for the observed categories along a given direction.

## Value

An image is produced on the current graphics device. The function returns a list with the following components:

 `stats` a matrix containing the values used to plot the box-and-whisker plots. `n` a vector with the number of observations for each category. `conf` a matrix containing further values to draw the lower and upper extremes of the notch. `out` a vectors with the values of the outlier points. `group` a vector whose elements indicate to which category the outlier belongs. `names` a character vector with the names of each category.

## Author(s)

Luca Sartore [email protected]

`plot.lengths`, `boxplot`, `getlen`
 ``` 1 2 3 4 5 6 7 8 9 10 11 12``` ```data(ACM) direction <- c(0,0,1) # Compute the appertaining directional line for each location loc.id <- which_lines(ACM[, 1:3], direction) # Estimate stratum lengths gl <- getlen(ACM\$MAT3, ACM[, 1:3], loc.id, direction) # Make the boxplot of the object gl boxplot(gl) ```