Description Objects from the Class Slots Extends Methods Author(s) References See Also Examples

A subclass of "`ArealSampling`

" that can be used to
create objects that encapsulate all the parameters necessary for, e.g.,
horizontal point (prism) sampling of standing trees (or downed logs).

Objects can be created by calls of the
form `new("angleGauge", ...)`

, and while this is reasonable with
this class because there are no graphical slots, it is still not
recommended. The preferred method for creating new objects is via the
`angleGauge`

constructor.

In addition to those slots in class "ArealSampling," the following are defined...

`angleDegrees`

:Object of class

`"numeric"`

: The gauge angle in degrees, normally in the range 0 <`angleDegrees`

<= 6.5 degrees.`angleRadians`

:Object of class

`"numeric"`

: The gauge angle in radians.`diopters`

:Object of class

`"numeric"`

: The prism angle in diopters (Delta).`k`

:Object of class

`"numeric"`

: Angle gauge constant (dimensionless); i.e.,*2*sin(angleRadians/2)*, where*angleRadians*is`angleRadians`

above.`prf`

:Object of class

`"numeric"`

: The plot radius factor; English=ft/in, metric=m/cm.`PRF`

:Object of class

`"numeric"`

The plot radius factor; English=ft/ft, metric=m/m.`alpha`

:Object of class

`"numeric"`

The plot radius proportionality constant; English=ft/ft, metric=m/m.`baf`

:Object of class

`"numeric"`

: The corresponding basal area factor in the appropriate units; English=ft*{}^2*/acre, metric=m*^2*/ha.`df`

:Object of class

`"numeric"`

: Diameter factor for horizontal line sampling in inches or cm.`DF`

:Object of class

`"numeric"`

: Diameter factor for horizontal line sampling in feet or meters.

Class `"ArealSampling"`

, directly.

- horizontalPointIZ
`signature(standingTree = "standingTree", angleGauge = "angleGauge")`

: Object constructor for horizontal point sampling.- summary
`signature(object = "angleGauge")`

: Show a summary of the`object`

.

Jeffrey H. Gove

T. G. Gregroire and H. T. Valentine. 2009.

*Sampling strategies for natural resources and the environment*. Chapman and Hall/CRC, 496p.

The "`ArealSampling`

" class.

1 | ```
showClass("angleGauge")
``` |

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