GPX — Track With a Single Trackpoint
A track containing exactly one point, which is what a receiver writes when a recording is stopped immediately. Distance, speed and bearing all need a pair of points, so this is the fixture that finds off-by-one loops and empty-slice crashes.
<?xml version="1.0" encoding="UTF-8"?>
<gpx version="1.1" creator="Novus Examples geospatial fixtures" xmlns="http://www.topografix.com/GPX/1/1">
<metadata>
<name>Kestrel Bay Coast Road</name>
<desc>Synthetic GPS trace over an invented territory.</desc>
<time>2026-01-01T09:00:00Z</time>
</metadata>
<trk>
<name>Single fix</name>
<trkseg>
<trkpt lat="47.064024" lon="-12.482008">
<ele>12.1</ele>
<time>2026-01-01T09:00:00Z</time>
</trkpt>
</trkseg>
</trk>
</gpx>
Specifications
- Crs
- WGS 84 (EPSG:4326)
- Encoding
- UTF-8
- Line Endings
- LF
- Seed
- 20260807
- Jitter Sigma Degrees
- 0.000025
- Start Time
- 2026-01-01T09:00:00Z
- Sample Interval Seconds
- 15
- Format
- GPX 1.1
- Tracks
- 1
- Segments
- 1
- Trackpoints
- 1
- Distance Metres
- 0
- Duration Seconds
- 0
Testing contract
Expected to pass- Scenario
- Compute distance, duration and average speed for the track.
- Expected result
- Distance and duration are exactly zero and speed is reported as undefined; nothing raises an index error while looking for a second point.
What is a .gpx file?
GPX (GPS Exchange Format) is an XML schema for GPS data, storing waypoints, routes, and tracks with coordinates, elevation, and timestamps. It is the standard interchange format for GPS devices and fitness and navigation apps. Track points capture recorded movement over time.
How to use this file
Use an example GPX file to test GPS track parsing, elevation and timestamp handling, and tools that import routes or visualize recorded activity.
How to use this file for testing
“GPX — Track With a Single Trackpoint” is a deterministic Novus Examples fixture for Geospatial, Error handling, Time-series data. GeoJSON, GPX, and KML files with points, lines, polygons, and tracks — for testing map tools, route parsers, and geo importers.
Documented properties for this file: seed 20260807 · UTF-8 · LF. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Geospatial fixtures publish one invented territory across formats, with the coordinate reference system and feature counts documented in specs. Convert or reproject and diff against the twin in the same group; edge-case geometries state exactly which assumption they are built to break.
Code examples
import gpxpy # pip install gpxpy
with open("gpx-single-point-track.gpx") as f:
gpx = gpxpy.parse(f)
print(sum(len(t.segments) for t in gpx.tracks), "segments")Related files
- gpxGPX — Timestamps With a UTC Offset Instead of ZThe same eight points timestamped with a +01:00 offset rather than the usual Z. The digits are identical to the reference track, so a parser that strips the offset and assumes UTC produces times that are wrong by exactly one hour — a silent error that only shows up when two traces are merged.
- gpxGPX — Track Split Into Two Segments by a PauseThe same 24 points split into two `trkseg` elements with a ten-minute gap between them — what a receiver writes after a stop or a signal loss. Tools that concatenate segments without noticing the boundary report a moving average dragged down by a pause that never happened on the move.
- gpxGPX — Track Without ElevationEight trackpoints with timestamps but no `ele` element, the shape a receiver writes on a 2D fix. Elevation-profile code that assumes the element is present either crashes or charts a flat line at zero, which looks like real data.
- gpxGPX — Track Without TimestampsThe same eight points with elevation but no `time` element — what you get when a track is drawn in a planning tool rather than recorded. Speed and pace calculations must refuse to produce a number here instead of dividing by a zero duration.
- gpxGPX — Garmin TrackPointExtension (heart rate, cadence, temperature)Eight trackpoints each carrying a Garmin TrackPointExtension with heart rate, cadence and air temperature. The GPX schema deliberately leaves `extensions` open, so this is the fixture for checking that a reader surfaces vendor data instead of discarding it on export.
- gpxGPX — Single-Segment Track (24 points)The baseline GPS trace for this category: 24 timestamped, elevated trackpoints in a single segment, walking the Coast Road of the invented territory. Every other GPX fixture here is this file with one thing changed.
Generated by generation/geospatial.py. Free for any use, no attribution required — license.