R Script to pull together GPS waypoints from multiple GPX files into a single CSV file

multiGPXtoCSV.r

# MD Madhusudan, [email protected], Nature Conservation Foundation, 2016-04-10
# Code to import waypoints from multiple GPX files in a folder,
# extract coordinates from each file into a single object, and 
# export to CSV or some other format
# 
# - initialisation steps
library(plotKML)
library(dplyr)

# Set working directory to folder where all the GPX Waypoint files are present
setwd("~/Desktop/")

# - List all filenames in folder starting with "Waypoint"
# Works for waypoint files with names like "Waypoints_22-FEB-16.gpx"
files <- list.files(pattern = "\\bWaypoints_")

# Initialise empty data frame
wpfull <- NULL

for (i in 1:length(files)) {
  # - Select first file from the list and import data into R object
  wplist <- readGPX(files[i], way=T)
  # extract latitude, longituDe, elevation, time, name and comments and apppend to R dataframe
  wpdf<- wplist$waypoints
  # append dataframe from last index to a full waypoint object
  wpfull <- bind_rows(wpfull, wpdf)
}

# export object with all waypoints to csv file
write.csv(wpfull, "finalwp.csv") 

To add to above, I get an error message: Error: Argument 1 can't be a list containing data frames

Hi, what if my data is not contained under waypoints, but under tracks - how to expand that part into a dataframe?

The dataframe containing the consecutive points of your trackline is nested within the wplist as a list in a list in a list. I was able to access mine using the following:

tracklinedf <- wplist$tracks[[1]][[1]]

Updated script with sf utilities incorporated here:
https://github.com/vjjan91/acoustics-westernGhats/blob/master/code/04_extract-waypoints-from-gps.R