Curve Registration for Exponential Family Functional Data

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Documentation for package ‘registr’ version 2.1.0

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

amp_curve	Simulate amplitude variance
bfpca	Binary functional principal components analysis
bfpca_argPreparation	Internal main preparation function for bfpca
bfpca_optimization	Internal main optimization for bfpca
bs_deriv	Nth derivative of spline basis
coarsen_index	Coarsen an index vector to a given resolution
constraints	Define constraints for optimization of warping functions
cov_hall	Covariance estimation after Hall et al. (2008)
crossprods_irregular	Crossproduct computation for highly irregular grids
crossprods_regular	Crossproduct computation for mostly regular grids
data_clean	Convert data to a 'refund' object
deriv.inv.logit	Estimate the derivative of the logit function
determine_npc	Determine the number of FPCs based on the share of explained variance
ensure_proper_beta	Correct slightly improper parameter vectors
expectedScores	Calculate expected score and score variance for the current subject.
expectedXi	Estimate variational parameter for the current subject.
fpca_gauss	Functional principal components analysis via variational EM
fpca_gauss_argPreparation	Internal main preparation function for fpca_gauss
fpca_gauss_optimization	Internal main optimization for fpca_gauss
gfpca_twoStep	Generalized functional principal component analysis
grid_subj_create	Generate subject-specific grid (t_star)
growth_incomplete	Berkeley Growth Study data with simulated incompleteness
initial_params	Create initial parameters for (inverse) warping functions
lambdaF	Apply lambda transformation of variational parameter.
loss_h	Loss function for registration step optimization
loss_h_gradient	Gradient of loss function for registration step
mean_curve	Simulate mean curve
mean_sim	Simulate mean
nhanes	NHANES activity data
piecewise_linear2_hinv	Create two-parameter piecewise linear (inverse) warping functions
plot.fpca	Plot the results of a functional PCA
psi1_sim	Simulate PC1
psi2_sim	Simulate PC2
register_fpca	Register curves using constrained optimization and GFPCA
registr	Register Exponential Family Functional Data
registr_oneCurve	Internal function to register one curve
simulate_functional_data	Simulate functional data
simulate_unregistered_curves	Simulate unregistered curves
squareTheta	Calculate quadratic form of spline basis functions for the current subject.