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Converting to & from tf2 months ago
Conversion from matrices | Conversion to tf from a data frame | ... in "long" format | ... in "wide" format | Changing representation with tf_rebase | Splitting and combining functions | Conversion from fda objects | Reversing the conversion | Conversion from tf to data frames | Converting back to a matrix or data frame
Curve Registration: Practical Guide and Pitfalls2 months ago
Registration: Template, Warp, Domain | What Is the Template? | What is a Warping Function? | Domain-Preserving vs Non-domain-preserving Warps | Example: Shift Registration with Explicit Template | Choosing a Registration Method | Evidence-Based Method Selection | Pitfalls and Likely Failure Modes | Structured shape variation | Noise dominates phase signal | Sparse or irregular grids | Boundary and overlap artifacts | Over-warping | Lambda penalization | Unsuitable template | Practical Diagnostics Workflow | Step 1: Register and inspect summary | Step 2: Visual inspection via plot() | Step 3: Quantify alignment of specific features | Step 4: Compare with an alternative method | Theoretical Background 101 | SRVF Framework | CC (Continuous Registration Criterion) | Affine (Shift / Scale) | Landmark | Worked Examples | Pinch Data: Cross-method Comparison | Growth Data: Deeper Real-data Workflow | Data representation matters | Penalization | Landmark registration | References
Data Wrangling2 months ago
Data manipulation using tidyfun | Example datasets | Existing tidyverse functions | tf helper functions in tidy workflows | Working with data.table
Developer Notes2 months ago
Why use tidyfun | Thoughts on design | Using tidyfun in new functions | Keep us informed!
tf Vectors and Operations2 months ago
tf-Class: Definition | tf-class | Example Data | tf subclass: tfd | tf subclass: tfb | tfb_spline: spline basis | Penalization: | tfb FPC-based | tf-Class: Methods | subset & subassign: | compare & compute: | summarize across a vector of functions: | summarize each function over its domain: | Methods for "functional" operations | evaluate: | (simple, local) smoothing | differentiate & integrate: | query | zoom & query
Visualization2 months ago
Plotting with ggplot2 | tf_ggplot with standard geoms | Using with other ggplot2 features | Functional data boxplots with geom_fboxplot | Heatmaps for functional data: gglasagna | geom_capellini | Plotting with base R
spikeSlabGAM: Bayesian Variable Selection, Model Choice and Regularization for Generalized Additive Mixed Models in R4 years ago