# F_1_panel.parallel {lattice}

### Description

This is the default panel function for `parallel`

.

### Usage

panel.parallel(x, y, z, subscripts, groups = NULL, col, lwd, lty, alpha, common.scale = FALSE, lower, upper, ..., horizontal.axis = TRUE, identifier = "parallel")

### Arguments

- x, y
- dummy variables, ignored.
- z
- The data frame used for the plot. Each column will be coerced to numeric before being plotted, and an error will be issued if this fails.
- subscripts
- The indices of the rows of
`z`

that are to be displyed in this panel. - groups
- An optional grouping variable. If specified, different groups are distinguished by use of different graphical parameters (i.e., rows of
`z`

in the same group share parameters). - col, lwd, lty, alpha
- graphical parameters (defaults to the settings for
`superpose.line`

). If`groups`

is non-null, these parameters used one for each group. Otherwise, they are recycled and used to distinguish between rows of the data frame`z`

. - common.scale
- logical, whether a common scale should be used columns of
`z`

. Defaults to`FALSE`

, in which case the horizontal range for each column is different (as determined by`lower`

and`upper`

). - lower, upper
- numeric vectors replicated to be as long as the number of columns in
`z`

. Determines the lower and upper bounds to be used for scaling the corresponding columns of`z`

after coercing them to numeric. Defaults to the minimum and maximum of each column. Alternatively, these could be functions (to be applied on each column) that return a scalar. - ...
- other arguments (ignored)
- horizontal.axis
- logical indicating whether the parallel axes should be laid out horizontally (
`TRUE`

) or vertically (`FALSE`

). - identifier
- A character string that is prepended to the names of grobs that are created by this panel function.

### Details

Produces parallel coordinate plots, which are easier to understand from an example than through a verbal description. See example for `parallel`

### References

Inselberg, Alfred (2009) *Parallel Coordinates: Visual Multidimensional Geometry and Its Applications*, Springer. ISBN: 978-0-387-21507-5.

Inselberg, A. (1985) “The Plane with Parallel Coordinates”, *The Visual Computer*.

### See Also

Documentation reproduced from package lattice, version 0.20-24. License: GPL (>= 2)