Description Usage Arguments Details Value Examples

Function for computing rates of change between abutting user-defined time-blocks.

1 2 3 4 5 6 |

`spd` |
Summed Probability Distribution obtained using the |

`breaks` |
A vector giving the breakpoints between the time-blocks. |

`backsight` |
A single numeric value defining the distance in time between the focal year and the backsight year for computing the rate of change. |

`changexpr` |
An expression defining how the rate of change is calculated, where |

When the argument `breaks`

is supplied the function aggregates the summed probability within each time-block and compared them across abutting blocks using the expression defined by `changexpr`

. When the argument `backsight`

is provided he expression is based on the comparison between the summed probability of each year and the associated backsight year.

An object of class `spdRC`

.

1 2 3 4 5 6 7 8 9 10 11 | ```
## Not run:
data(emedyd)
caldates <- calibrate(x=emedyd$CRA, errors=emedyd$Error, normalised=FALSE, calMatrix=TRUE)
bins <- binPrep(sites=emedyd$SiteName, ages=emedyd$CRA, h=50)
emedyd.spd <- spd(caldates,bins,timeRange=c(16000,9000),runm=100)
emedyd.gg <- spd2rc(emedyd.spd,breaks=seq(16000,9000,-1000))
emedyd.gg2 <- spd2rc(emedyd.spd,backsight=10)
plot(emedyd.gg)
plot(emedyd.gg2)
## End(Not run)
``` |

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