about documentation     psyosphere documentation guideline
about functions         psyosphere functions guideline
about_analysing_tips    Guide how to analyse GPS data
about_common_mistakes   Tips to prevent common mistakes
about_demos             Explanation how the demo files can be accessed
apply_shift             Copy columns and offset the index of the copied
                        column
apply_tracks            Run function on each track in a psyo data frame
average_coordinates     Calculates the mean position of coordinates
                        within a time interval.
average_duplicates      Correct coordinates with the same time
des_duplicates          Count duplicates within each track
des_first               Get first value within each track
des_last                Get last value within each track
des_length              Get the number of coordinates within each track
des_max                 Get the highest value within each track
des_mean                Calculate normal and weighted means while
                        excluding gaps in data
des_min                 Get the lowest value within each track
des_sd                  Calculate normal and weighted sds while
                        excluding gaps in data
des_sum                 Calculates sum for each track
des_summary             Creates a data frame with a summary of
                        descriptive information for each track
dir_add_csv             Bind CSV data to data frame
dir_get_gpx             Read GPX files from directory into data frame.
distance_line           Add shortest distance to a line
distance_peers          Add distance to peers
distance_point          Add the distances to a point from each
                        coordinate
distance_psyo           Add distance to another track in psyo format
distance_to_direct_line
                        Add deviation from shortest route from begin of
                        track to a line
export_gpx              Export tracks as gpx files
export_kml              Export tracks as kml files
mark_gap_segments       Adding column with segment names between gaps
mark_inside_polygon     Mark coordinates within a polygon
mark_speed_gaps         Mark speeds that exceed a certain speed limit
                        as gaps
mark_time_gaps          Mark segments between data gaps
plot_line               Plot line on map
plot_map                Get a Google map
plot_polygon            Plot polygon on map
plot_tracks             Plot tracks on a map
psyo                    Example how data should be formatted.
psyo_geomean            Example data to demonstrate the geomean
                        function
psyo_rounds             GPS example of walking in circles
psyo_rounds2            GPS example with 3 selected rounds
psyo_rounds_map         Map for data psyo_rounds and psyo_rounds2
psyosphere-package      psyosphere details
select_between_polygons
                        Select tracks between two polygons.
select_gaps             Select all coordinates with a gap
select_test_sample      Select a sample from each track
select_without_gaps     Select all coordinates without gap
t_bearing               Add bearings
t_distance              Add distance to next coordinate
t_speed                 Add speed
t_time_difference       Add time difference column for weighted
                        statistics
val_cname               Validate the column name of a data frame
val_psyo                Validate psyo format
val_var                 Validate variables
