Package index • pressR

Parsers

Read pressure data from various file formats

pr_read_ascii(): Read ASCII Pressure Data Export
pr_read_csv(): Read Pressure Data from CSV
pr_read_forcesensor(): Read Force Sensor Data
pr_read_mask(): Read Mask File
pr_read_auto(): Auto-Detect and Read a Pressure Data File

Sensor Layouts

Predefined and custom sensor coordinate layouts

pr_layout(): Create a Pressure Sensor Layout
pr_layout_insole(): Get In-Shoe Pressure Insole Layout
pr_layout_platform(): Get Pressure Platform Layout
pr_layout_mat(): Get Generic Sensor Mat Layout
pr_layout_saddle(): Get Saddle Pressure Mat Layout
pr_layout_seat(): Get Seating Pressure Mat Layout
pr_layout_glove(): Get Glove Sensor Layout
pr_layout_list(): List All Built-In Sensor Layouts
pr_validate_layout(): Validate a Pressure Sensor Layout

S3 Classes

pr_trial(): Create a Pressure Trial Object
pr_dataset(): Create a Pressure Dataset
pr_cop(): Center of Pressure Object
pr_mask(): Create a Region Mask

Region Masks

pr_mask_default(): Get Default Region Masks for a Layout
pr_mask_apply(): Apply Masks to Extract Regional Pressure Data
pr_mask_foot_auto(): Auto-Segment Foot Regions from Pressure Data
pr_mask_saddle_6(): Standard 6-Region Saddle Mask
pr_mask_symmetry(): Split Layout into Left/Right Halves

Per-Frame Analysis

pr_calc_peak_pressure(): Calculate Peak Pressure Per Frame
pr_calc_mean_pressure(): Calculate Mean Pressure Per Frame
pr_calc_force(): Calculate Total Force Per Frame
pr_calc_contact_area(): Calculate Contact Area Per Frame
pr_calc_cop(): Calculate Center of Pressure
pr_calc_loaded_rate(): Calculate Fraction of Loaded Sensors Per Frame
pr_calc_pti(): Pressure-Time Integral Per Sensor
pr_calc_impulse(): Force-Time Integral (Impulse)
pr_calc_contact_time(): Total Contact Time
pr_calc_cop_path(): Total COP Path Length
pr_calc_cop_excursion(): COP Excursion (Anterior-Posterior and Medial-Lateral Range)

Trial Summary

pr_summary(): Summarize Trial Pressure Parameters
pr_calc_symmetry_index(): Symmetry Index

Regional Analysis

pr_calc_regional(): Compute Parameters by Region

Application-Specific Analysis

pr_calc_gait_cycles(): Detect Gait Cycles from Foot Pressure Data
pr_calc_rollover(): Analyze COP Rollover Pattern
pr_calc_saddle_bridge(): Detect Saddle Bridge Formation
pr_calc_saddle_slip(): Detect Saddle Slip / Asymmetric Loading
pr_calc_seat_hotspot(): Identify Pressure Hotspots

Reference Thresholds

pr_ref_saddle(): Saddle Fit Reference Thresholds
pr_ref_diabetic_foot(): Diabetic Foot Pressure Thresholds
pr_ref_wheelchair(): Wheelchair Seating Pressure Thresholds

Visualization

pr_plot_heatmap(): Plot Pressure Heatmap
pr_plot_heatmap_masked(): Plot Pressure Heatmap with Region Overlay
pr_plot_3d(): Interactive 3D Pressure Surface
pr_plot_force_time(): Plot Force vs Time
pr_plot_pressure_time(): Plot Peak and Mean Pressure vs Time
pr_plot_cop(): Plot Center of Pressure Trajectory
pr_plot_cop_butterfly(): COP Butterfly Plot Across Gait Cycles
pr_plot_contact_area(): Plot Contact Area vs Time
pr_plot_regional_bar(): Regional Parameter Comparison Bar Chart
pr_plot_symmetry(): Left/Right Symmetry Plot
pr_plot_comparison(): Compare Two Trials
pr_plot_saddle_report(): Saddle Fit Report Panel
pr_plot_foot_report(): Foot Pressure Report Panel
plot(<pr_layout>): Plot a Sensor Layout
plot(<pr_trial>): Plot a Pressure Trial

Export & Reporting

pr_export_csv(): Export Analysis Results to CSV
pr_export_report(): Generate an Analysis Report

Batch Processing

pr_batch_summary(): Batch Summary Across Multiple Trials
pr_merge_trials(): Merge Trials into a Dataset

Shiny Application

pr_run_app(): Launch the Interactive Pressure Data Explorer

Example Data

pr_example_trial(): Generate a Synthetic Pressure Trial
pr_example_files(): Write Sample Pressure Data Files

Utilities

pr_interpolate(): Spatial Interpolation of Pressure Data (for Display)
pr_filter_time(): Subset a Trial to a Time Window
pr_downsample(): Downsample a Trial

Cohort Ingest

Read a whole study into one object: a Pliance/Novel .asc reader that honours the recorded time column and the device channel map, directory batch reading, and filename-derived metadata.

pr_read_pliance(): Read a Novel/Pliance ASCII Export
pr_read_dir(): Read a Directory of Pressure Exports
pr_meta_from_filename(): Split Metadata Fields Out of a File Name

Device Channel Maps

Layouts built from an explicit channel-to-grid index map, for devices whose channel order is not the grid’s column-major order.

pr_layout_from_index_map(): Build a Layout From an Explicit Channel Map
pr_layout_saddle_novel(): Novel/Pliance 16x16 Saddle Mat Layout
pr_channel_order(): Raw Device Channel Order for a Layout

Cohort Handling

Design tables, filtering as an assertion, and dataset validation.

pr_design_table(): Cohort Design Table
pr_dataset_filter(): Filter a Dataset by Trial Metadata, With Count Assertions
pr_assert_cohort(): Assert Cohort Size
pr_validate_dataset(): Validate Cohort Homogeneity

Frame Metrics (whole-grid)

Whole-grid counterparts to the loaded-cell family. See the details on each for the denominator distinction.

pr_frame_metrics(): Per-Frame Metric Table
pr_calc_mean_pressure_grid(): Whole-Grid Mean Pressure Per Frame
pr_calc_total_pressure(): Total Pressure Per Frame
pr_calc_loaded_count(): Loaded Cell Count Per Frame
pr_calc_cop_grid(): Center of Pressure in Grid Index Units
pr_calc_pci(): Peak/Mean Pressure Concentration Index
pr_ref_pci(): Pressure Concentration Index Interpretation Bands

Per-Sensor Maps

Time-averaged per-sensor statistics, feature matrices, and streaming cohort summaries.

pr_sensor_map(): Per-Sensor Statistics Over Time
pr_profile_matrix(): Per-Sensor Feature Matrix for a Dataset
pr_batch_frame_summary(): Per-Recording Frame Summary for a Whole Cohort

Sensor Quality and Gradients

pr_sensor_quality(): Per-Sensor Hardware Quality Across a Cohort
pr_calc_gradient(): Spatial Pressure Gradient Magnitude

Zones and Symmetry

Row-band masks with an explicit split, zone statistics on the time-averaged map, and symmetry with a mirror-balance control.

pr_mask_rowbands(): Row-Band Region Masks With an Explicit Split
pr_calc_regional_map(): Zone Statistics of the Time-Averaged Sensor Map
pr_calc_symmetry_map(): Left/Right Asymmetry of the Time-Averaged Sensor Map
pr_mask_mirror_balance(): Largest Mirror-Symmetric Subset of a Mask
pr_symmetry_sensitivity(): Asymmetry Index Across a Family of Masks
pr_calc_cop_masked(): Centre of Pressure Per Region

Temporal Structure

Spectra and oscillation-based stride detection, for continuously loaded sensors that never unload between contacts.

pr_calc_spectrum(): Power Spectrum of a Frame-Level Signal
pr_calc_dominant_freq(): Dominant Oscillation Frequency in a Band
pr_calc_stride_cycles(): Segment a Recording into Stride Cycles
pr_calc_phase_map(): Sensor Map Averaged Over the Stride Cycle
pr_cop_shape(): Loop Geometry of a COP Trajectory

Provenance and Design Integrity

pr_lock_table(): Lock a Table's Content and Shape
pr_verify_lock(): Verify a Table Against Its Lock File
pr_validate_summary(): Two-Tier Data Frame Validation
pr_factor_contract(): Assert the Level Sets of Design Factors
pr_design_gaps(): Observed Design Cells Against the Full Crossing