| output.control {geoR} | R Documentation |
This auxiliary function defines output options for
krige.bayes and krige.conv.
output.control(n.posterior, n.predictive, moments, n.back.moments,
simulations.predictive, mean.var, quantile,
threshold, signal, messages.screen)
n.posterior |
number of samples to be taken from the posterior distribution. |
n.predictive |
number of samples to be taken from the
predictive distribution. By default equals to
n.posterior. |
moments |
logical. Indicates whether the moments of the
predictive distribution are returned. If lambda = 1
there is no transformation/back-transformation.
If \lambda = 0 or lambda = 0.5 the moments are
back-transformed by analytical expressions. For other cases the
back-transformation is done by simulation. |
n.back.moments |
number of sample to back-transform moments by simulation. Defaults to 1000. |
simulations.predictive |
logical. Defines whether to draw simulations
from the predictive distribution. Only valid if prediction
locations are provided on the argument locations. |
mean.var |
logical. Indicates whether mean and variances of the simulations of the predictive distributions are computed and returned. |
quantile |
indicates whether quantiles of the
simulations from the
predictive distributions are computed and returned.
If a vector with numbers in the interval
[0,1] is provided, the output includes the object
quantiles, which contains values of corresponding
estimated quantiles. For
example, if quantile = c(0.25,0.50,0.75) the function
returns the quartiles of the distributions at each of the
prediction locations.
If quantile = TRUE the default values c(0.025, 0.5,
0.975), are assumed.
A measure of uncertainty of the predictions, analogous to the kriging
standard error, can be computed by (quantile0.975 - quantile0.025)/4.
Only used if prediction locations are provided in the argument
locations. |
threshold |
defaults to FALSE. If
one or more values are provided, object named
probabilities is included in the output.
This object contains, for each
prediction location, the probability that the variable is less
than or equal than the threshold provided by the user. |
signal |
logical. If TRUE the signal is predicted, otherwise the
variable is predicted. If no transformation is performed the
expectations are the same in both cases and
the kriging variances are different when the nugget parameter
is different from zero. |
messages.screen |
logical. Indicates whether or not status messages are printed on the output device while the function is running. |
A list with processed arguments to be passed to the main function.
Paulo J. Ribeiro Jr. Paulo.Ribeiro@est.ufpr.br,
Peter J. Diggle p.diggle@lancaster.ac.uk.