Added a NEWS.md file to track changes to the package.
registr 1.0.0
Preparing for first release to CRAN
Added Erin McDonnell as an author
registr 1.1.0
Erin McDonnel added non-parametric updates
Updated vignette as well
Use of periodic b-splines
get her to implement gradient for parametric warping stuff
registr 2.0.0
registr is now able to handle incomplete curves (see new vignette)
Added 'two-step GFPCA' as alternative GFPCA approach
New plot function for GFPCA results
Parallelized the registration call
Added user-specified template functions by argument 'Y_template'
Added Gamma and Poisson family
Added Alexander Bauer an an author
registr 2.1.0
Changed convergence threshold in register_fpca from 0.00001 to 0.0001 as a more reasonable threshold in many data situations.
Improved robustness of 'cov_hall' by (i) first centering the curves before taking the cross product and smoothing it and by (ii) ensuring positive (semi-)definiteness of the covariance matrix with 'Matrix::nearPD'.
Improved speed of 'cov_hall' for large data by using 'mgcv::bam' for smoothing.
Added argument 'npc_varExplained' to functions 'fpca_gauss' and 'bfpca' to choose the number of FPCs based on the share of explained variation.
All 'verbose' arguments now take values between 0-4 to better control the level of detail of info messages.
A lot of minor fixes and refinements.
Updated potentially invalid URLs
Preparing things below
mgcv spline choices
penalization for optimization (not sure how to choose best sigma)