Function reference • tidyfun

tf - (Sub)classes: Constructors & converters

Defining, evaluating and converting functional data objects

tfd() as.tfd() as.tfd_irreg(): Constructors for vectors of "raw" functional data (from tf)

tfb() tfb_wavelet() as.tfb(): Constructors for functional data in basis representation (from tf)

tfb_spline(): Spline-based representation of functional data (from tf)

tfb_fpc(): Functional data in FPC-basis representation (from tf)

fpc_wsvd(): Eigenfunctions via weighted SVD (from tf)

Evaluation and indexing

Accessing, appending, evaluating and overwriting functional data objects

`[`(<tf>) `[<-`(<tf>): Accessing, evaluating, subsetting and subassigning tf vectors (from tf)

tf_approx_linear() tf_approx_spline() tf_approx_none() tf_approx_fill_extend() tf_approx_locf() tf_approx_nocb(): Inter- and extrapolation functions for tfd-objects (from tf)

tf_evaluate(): Evaluate tf-vectors for given argument values (from tf)

tf_interpolate(): Re-evaluate tf-objects on new evaluation grid. (from tf)

Arithmetic, logical and summary functions

Functionality for computing with and comparing functional data

Ops(<tf>) `==`(<tfd>) `!=`(<tfd>) `==`(<tfb>) `!=`(<tfb>) Ops(<tfd>) Ops(<tfb>) Math(<tfd>) Math(<tfb>) Summary(<tf>) cummax(<tfd>) cummin(<tfd>) cumsum(<tfd>) cumprod(<tfd>) cummax(<tfb>) cummin(<tfb>) cumsum(<tfb>) cumprod(<tfb>): Math, Summary and Ops Methods for tf (from tf)

mean(<tf>) median(<tf>) sd() var() summary(<tf>): Functions that summarize tf objects across argument values (from tf)

tf_depth(): Functional Data Depth (from tf)

tf_fwise() tf_fmax() tf_fmin() tf_fmedian() tf_frange() tf_fmean() tf_fvar() tf_fsd() tf_crosscov() tf_crosscor(): Summarize each tf in a vector (from tf)

Differentiation, integration and simple smoothing

tf_derive(): Differentiating functional data: approximating derivative functions (from tf)

tf_integrate(): Integrals and anti-derivatives of functional data (from tf)

tf_smooth(): Simple smoothing of tf objects (from tf)

Wrangling

Reshaping and transforming tf-objects inside data frames

tf_gather(): Gather all columns representing functional measurements into a tfd-object

tf_spread(): Spread a tf-column into many columns representing the function evaluations.

tf_nest(): Turn "long" tables into tidy data frames with tf-objects

tf_unnest(): Turn (data frames with) tf-objects / list columns into "long" tables.

tf_evaluate(<data.frame>): Evaluate tfs inside a data.frame

Visualization & Display

Graphics functions and print formats

plot(<tf>) lines(<tf>) points(<tf>): base plots for tfs (from tf)

stat_tf() geom_spaghetti() geom_meatballs(): Spaghetti plots for tf objects

gglasagna(): Lasagna plots for tfs using ggplot2

stat_errorband() geom_errorband(): Error bands using tf objects as bounds

stat_capellini() geom_capellini(): Glyph plots for tf objects

print(<tf>) print(<tfd_reg>) print(<tfd_irreg>) print(<tfb>) format(<tf>): Pretty printing and formatting for functional data (from tf)

type_sum(<tf>) obj_sum(<tf>) pillar_shaft(<tf>): Format tidy functional data for tibbles

Querying functional data

Locating functional features like peaks or zero-crossings

tf_where() tf_anywhere(): Find out where functional data fulfills certain conditions. (from tf)

tf_zoom(): Functions to zoom in/out on functions (from tf)

Utilities

Utility functions

tf_arg() tf_evaluations() tf_count() tf_domain() `tf_domain<-`() tf_evaluator() `tf_evaluator<-`() tf_basis() `tf_arg<-`() tf_resolution() `tf_resolution<-`() coef(<tfb>) rev(<tf>) is.na(<tf>) is.na(<tfd_irreg>) is_tf() is_tfd() is_reg() is_tfd_reg() is_irreg() is_tfd_irreg() is_tfb() is_tfb_spline() is_tfb_fpc(): Utility functions for tf-objects (from tf)

Generating random functional data

RNGs for curves

tf_rgp(): Gaussian Process random generator (from tf)

tf_jiggle() tf_sparsify(): Make a tf (more) irregular (from tf)

Data Sets

Functional data sets

chf_df: Congestive heart failure accelerometry data

dti_df: Diffusion tensor imaging data

tidyfun tidyfun-package: tidyfun: Tools for Tidy Functional Data