Further stationary and isotropic modelsll{
RMaskey 	Askey model (generalized test or triangle model) 
RMbessel 	Bessel family 
RMcircular 	circular model 
RMcauchy 	modified Cauchy family 
RMconstant 	spatially constant model 
RMcubic 	cubic model (see Chiles & Delfiner) 
RMdagum 	Dagum model 
RMdampedcos 	exponentially damped cosine 
RMqexp 	Variant of the exponential model 
RMfractdiff 	fractionally differenced process 
RMfractgauss 	fractional Gaussian noise 
RMgengneiting 	generalized Gneiting model 
RMgneitingdiff 	Gneiting model for tapering 
RMhyperbolic 	generalised hyperbolic model 
RMlgd 	Gneiting's local-global distinguisher
RMma 	one of Ma's model 
RMpenta 	penta model (see Chiles & Delfiner) 
RMpower 	Golubov's model 
RMwave 	cardinal sine 
}
Variogram models (stationary increments/intrinsically stationary)
ll{
RMdewijsian 	generalised version of the DeWijsian model 
RMgenfbm 	generalized fractal Brownian motion 
RMflatpower 	similar to fractal Brownian motion but
always smooth at the origin
}
General composed models (operators)
Here, composed models are given that can be of any kind (stationary/non-stationary), depending on the submodel.
ll{RMbernoulli 	Correlation function of a binary field
based on a Gaussian field 
RMexponential 	exponential of a covariance model 
RMintexp 	integrated exponential of a covariance model (INCLUDES ma2)
RMpower 	powered variograms
RMqam 	Porcu's quasi-arithmetric-mean model
RMS 	details on the optional transformation
 arguments (var, scale, Aniso, proj).
}
Stationary and isotropic composed models (operators)
ll{
 RMcutoff 	Gneiting's modification towards finite range
RMintrinsic 	Stein's modification towards finite range
RMnatsc 	practical range
RMstein 	Stein's modification towards finite range
 RMtbm	Turning bands operator
}
Stationary space-time models
Here, most of the models are composed models (operators).
ll{
 RMave 	space-time moving average model 
RMcoxisham 	Cox-Isham model 
RMcurlfree 	curlfree (spatial) field (stationary and anisotropic)
RMdivfree 	divergence free (spatial) vector valued field, (stationary and anisotropic)
RMgennsst 	generalization of Gneiting's non-separable space-time model 
RMiaco 	non-separabel space-time model
 RMmastein 	Ma-Stein model
RMnsst 	Gneiting's non-separable space-time model 
RMstein 	Stein's non-separabel space-time model
RMstp 	Single temporal process
RMtbm 	Turning bands operator}
Multivariate/Multivariable and vector valued models
See also the vignette ../doc/multivariate_jss.pdf{multivariate}.
ll{
 RMbiwm 	full bivariate Whittle-Matern model (stationary and isotropic)
RMbigneiting 	bivariate Gneiting model (stationary and isotropic)
RMcurlfree 	curlfree (spatial) vector-valued field (stationary and anisotropic)
RMdelay 	bivariate delay effect model (stationary)
RMdivfree 	divergence free (spatial) vector valued
field, (stationary and anisotropic)
RMexponential 	functional returning $e^C$
RMkolmogorov 	Kolmogorov's model of turbulence
RMmatrix 	trivial multivariate model
RMmqam 	multivariate quasi-arithmetic mean (stationary)
RMparswm 	multivariate Whittle-Matern model (stationary and isotropic)
RMschur 	element-wise product with a positive definite
matrix
RMtbm 	turning bands operator
RMvector 	vector-valued field (combining RMcurlfree and RMdivfree)
}
Non-stationary models
ll{
 RMnonstwm 	one of Stein's non-stationary
 Wittle-Matern models 
RMprod 	scalar product
}
Negative definite models that are not variograms
ll{
RMsum 	a non-stationary variogram model
}
Models related to max-stable random fields (tail correlation functions)
ll{
RMaskey 	Askey model (generalized test or triangle
model) with $\alpha \ge [dim / 2] +1$
RMbernoulli 	Correlation function of a binary field
 based on a Gaussian field 
RMbr2bg 	Operator relating a Brown-Resnick process
 to a Bernoulli process
RMbr2eg 	Operator relating a Brown-Resnick process
 to an extremal Gaussian process
RMbrownresnick 	tail correlation function
 of Brown-Resnick process
RMgencauchy 	generalized Cauchy family with  $\alpha\le 1/2$
RMm2r 	shape functions related to max-stable
 processes
RMm3b 	shape functions related to max-stable
 processes
RMmatern 	Whittle-Matern model with $\nu\le 1$
RMmps 	shape functions related to max-stable
 processes
RMschlather 	tail correlation function of the
 extremal Gaussian field 
RMstable 	symmetric stable family or powered
 exponential model with $\alpha\le 1$
RMwhittle 	Whittle-Matern model, alternative
 parametrization with $\nu\le 1/2$
}
Other covariance models
ll{
 RMuser 	User defined model 
}
Auxiliary models
There are models or better function that are not covariance functions,
but can be part of a model definition. See Auxiliary RMmodels.