The purpose of this package is to provide infrastructure for handling running and cycling data from GPS-enabled tracking devices.
The formats that are currently supported for the training activity files are .tcx (Training Center XML) and .db3. After extraction and appropriate manipulation of the training or competition attributes, the data are placed into session-based and unit-aware data objects of class trackeRdata (S3 class). The information in the resultant data objects can then be visualised, summarised, and analysed through corresponding flexible and extensible methods.
- Read data from .tcx, Strava .gpx, .db3 or Golden Cheetah’s .json files.
- Read all supported files in a specified directory.
- Automatically identify sessions from timestamps.
- Imputation of data to characterise times when the device is paused or remains stationary.
- Correction of GPS-measured distances using elevation data.
- Basic data cleaning capabilities e.g., no negative speeds or distances.
- Specify and conveniently change units of measurement.
- Organise data into session-based and unit-aware data objects of class trackeRdata.
- Session summaries: distance, duration, time moving, average speed/pace/heart rate/cadence/power (overall and moving), work to rest ratio, temperature.
- Time spent exercising in user-supplied zones, e.g., heart rate zones or speed zones.
- Work capacity above critical power (W’, W prime)
- Distribution profiles: time spent exercising above thresholds of training attributes.
- Concentration profiles: negative derivatives of distribution profiles.
- Functional principal components analysis of distribution and concentration profiles.
- Plot session progression in, e.g., pace, heart rate, etc.
- Plot route covered during session on static and interactive maps from various providers.
- Plot session summary statistics.
- Plot date time of sessions in timeline plots.
- Plot time spent exercising in zones.
- Plot distribution/concentration profiles.
- Plot principal components of distribution/concentration profiles.
- Ridgeline (or joy) plots for distribution/concentration prifiles.
Install the released version from CRAN:
Or the development version from github:
# install.packages("devtools") devtools::install_github("trackerproject/trackeR")
Plot workout data
data(runs, package = "trackeR") plot(runs, session = 1:5, what = c("speed", "pace", "altitude"))
Change the units
data(runs, package = "trackeR") runs0 <- change_units(runs, variable = c("speed", "altitude"), unit = c("km_per_h", "ft"), sport = c("running", "running")) plot(runs0, session = 1:5, what = c("speed", "pace", "altitude"))
library("trackeR") runs_summary <- summary(runs) plot(runs_summary, group = c("total", "moving"), what = c("avgSpeed", "distance", "duration", "avgHeartRate"))
Generate distribution and concentration profiles
runsT <- threshold(runs) dp_runs <- distribution_profile(runsT, what = c("speed", "heart_rate")) dp_runs_smooth <- smoother(dp_runs) cp_runs <- concentration_profile(dp_runs_smooth) plot(cp_runs, multiple = TRUE, smooth = FALSE)
A ridgeline plot of the concentration profiles
ridges(cp_runs, what = "speed")
ridges(cp_runs, what = "heart_rate")
Explore concentration profiles for speed, e.g., via functional principal components analysis (PCA)
## fit functional PCA cp_PCA <- funPCA(cp_runs, what = "speed", nharm = 4) ## pick first 2 harmonics/principal components round(cp_PCA$varprop, 2) ##  0.66 0.25 0.06 0.02 ## plot harmonics plot(cp_PCA, harm = 1:2)
## plot scores vs summary statistics scores_SP <- data.frame(cp_PCA$scores) names(scores_SP) <- paste0("speed_pc", 1:4) d <- cbind(runs_summary, scores_SP) library("ggplot2") ## pc1 ~ session duration (moving) ggplot(d) + geom_point(aes(x = as.numeric(durationMoving), y = speed_pc1)) + theme_bw()
## pc2 ~ avg speed (moving) ggplot(d) + geom_point(aes(x = avgSpeedMoving, y = speed_pc2)) + theme_bw()