# GPXConv
GPX track converter: post-process routes and tracks typically produced by GPS loggers.
* Reads from file(s) given as argument (or STDIN) and writes to STDOUT or a file.
* Can append segments from multiple tracks and files (sequential composition).
* Can complete gaps in input file(s) by merging data from an alternative GPX file (parallel composition).
* Concatenates all given tracks (or routes) preserving segments, collecting waypoints.
* The metadata (header) of the first input track is used for the output track.
* Reports missing data and ignores points containing non-plausible data.
* Optionally filters out points before or after given time limits.
* Optionally filters out points with an element value below or above given limits.
* Optionally prunes all extensions or elements with value below or above given limits.
* Optionally fills in elevation and time data by interpolation within segments.
* Optionally interpolates points in long gaps (by default, > 3600 seconds).
* Optionally corrects elevation and sanitizes and smoothens tracks.
(Orthometric height = GPS ellipsoidal height - geoid height,
see http://www.unavco.org/edu_outreach/tutorial/geoidcorr.html)
* Produces statistics, optionally including ascent/descent rates of climbing phases.
* Optionally computes approx. total energy spent by biking along the resulting track.
* Prints information (if enabled), any warnings (if enabled), and errors to STDERR.
Usage:
```
gpxconv [> ]
```
Command-line options:
```
-walk, -cycle, -drive, -fly - type of recorded activity, default: drive
-smooth - smoothen tracks
-phases - analyze ascent/descent phases
-weight - compute biking energy for given weight in kg
-begin