# Approximate distribution in qqmath but keep points on tails.

### Description

Panel function for `qqmath`

to reduce the number of points
plotted by sampling along the specified distribution. The usual method
for such sampling is to use the `f.value`

argument to
`panel.qqmath`

. However, this panel function differs in
two ways:
(1) a specified number of data points are retained (not
interpolated) on each tail of the distribution.
(2) the sampling is evenly spaced along the specified
distribution automatically (whereas `f.value = ppoints(100)`

is
evenly spaced along the uniform distribution only).

*
This function is deprecated as of lattice 0.18-4 (available for
R 2.11.0). Use the tails.n argument of
panel.qqmath instead.
*

### Usage

1 2 | ```
panel.qqmath.tails(x, f.value = NULL, distribution = qnorm,
groups = NULL, ..., approx.n = 100, tails.n = 10)
``` |

### Arguments

`x, f.value, distribution, groups` |
see |

`...` |
further arguments passed on to |

`approx.n` |
number of points to use in approximating the distribution. Points will be equally spaced in the distribution space. |

`tails.n` |
number of points to retain (untouched) at both the high and low tails. |

### Author(s)

Felix Andrews felix@nfrac.org

### See Also

`panel.qqmath`

which should be used instead (as of lattice 0.18-4).

### Examples

1 | ```
## see ?panel.qqmath
``` |