muleMan | R Documentation |
Multivariate correlograms between TRW fluctuations and climatic fluctuations.
muleMan(rd, cd, rd.var = NULL, cd.var = NULL, ...)
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cd.var |
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Further arguments in |
Function mgram
in
package ecodist
is implemented to
compare the dendroclimatic fluctuations. Models
being compared should have common higher-level
factors (see example).
data.frame
object of multivariate correlations.
Wilson Lara <wilarhen@gmail.com>, Felipe Bravo <fbravo@pvs.uva.es>
Lara W., F. Bravo, D. Maguire. 2013. Modeling patterns between drought and tree biomass growth from dendrochronological data: A multilevel approach. Agric. For. Meteorol., 178-179:140-151.
##TRW chronology (mm) and inside-bark radii data(Pchron,envir = environment()) ## Parameters of allometric model to compute Diameter at Breast ## Height over bark (DBH, cm) from diameter inside bark (dib, cm) ## and Total Tree Biomass (TTB, kg tree -1 ) from DBH (Lara ## et. al. 2013): biom_param <- c(2.87, 0.85, 0.05, 2.5) ## Modeling tree-biomass fluctuations while accounting for ## within-plot source variability (see defaults in "modelFrame" ## function) trwf <- modelFrame(Pchron, to = 'cm', MoreArgs = list(mp = c(2,1, biom_param)), log.t = FALSE, on.time = FALSE) ## Climatic Records: data(Temp,envir = environment()) data(Prec,envir = environment()) ## Aridity-index fluctuations: aif <- modelFrame(rd = list(Prec, Temp), fn = list('moveYr','wlai'), lv = list('year','year'), form = 'lmeForm') ##Multivariate comparison: mcomp <- muleMan(trwf, aif, nperm = 10^3) str(mcomp)
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