R: The 'spells.can.span.years' option specifies whether spells...

climdex.cdd {climdex.pcic} | R Documentation

## The `spells.can.span.years` option specifies whether spells can cross year boundaries – i.e., span years. The default for this is the same as for fclimdex.

### Description

The `spells.can.span.years` option specifies whether spells can cross year boundaries – i.e., span years. The default for this is the same as for fclimdex.

### Usage

    climdex.cdd(ci, spells.can.span.years = TRUE)

### Arguments

`ci` | Object of type climdexInput.
`spells.can.span.years` | Whether to allow spells to span years

### Value

A vector containing the length of the spell for each year.

### References

http://etccdi.pacificclimate.org/list_27_indices.shtml

### See Also

`climdexInput.raw`, `climdexInput.csv`, `spell.length.max`.

### Examples

    library(PCICt)

    ## Create a climdexInput object from some data already loaded in and
    ## ready to go.

    ## Parse the dates into PCICt.
    tmax.dates <- as.PCICt(do.call(paste, ec.1018935.tmax[,c("year",
    "jday")]), format="%Y %j", cal="gregorian")
    tmin.dates <- as.PCICt(do.call(paste, ec.1018935.tmin[,c("year",
    "jday")]), format="%Y %j", cal="gregorian")
    prec.dates <- as.PCICt(do.call(paste, ec.1018935.prec[,c("year",
    "jday")]), format="%Y %j", cal="gregorian")

    ## Load the data in.
    ci <- climdexInput.raw(ec.1018935.tmax$MAX_TEMP,
    ec.1018935.tmin$MIN_TEMP, ec.1018935.prec$ONE_DAY_PRECIPITATION,
    tmax.dates, tmin.dates, prec.dates, base.range=c(1971, 2000))

    ## Create an annual timeseries of the CDD index.
    cdd <- climdex.cdd(ci)

[Package climdex.pcic version 1.1-11 Index]