Export Bathymetry CSV
Export depth data as CSV.
Use this when
You want depth readings with GPS coordinates in a spreadsheet or GIS tool. The bathymetry CSV gives you one row per ping that has a valid GPS fix, with time and depth in meters.
Before you start
Open a recording in HumVision. You need at least one channel loaded with GPS data. Pings without a GPS fix are skipped automatically.
Export the file
- Open a recording in the viewer.
- Click Export in the toolbar.
- Click Export Bathymetry (CSV).
- Choose a save location and click Save.
What the file contains
Each row is one ping. The columns depend on whether the recording has an absolute timestamp.
When a recording timestamp is available:
| Column | Contents |
|---|---|
time_iso | UTC timestamp in ISO 8601 format |
lat | Latitude in decimal degrees |
lon | Longitude in decimal degrees |
depth_m | Depth in meters |
When no recording timestamp is available, time_iso is replaced by time_s — elapsed seconds since the recording started.
What you should see
A save dialog opens. After you save, a confirmation appears: "Bathymetry data saved." The file is named bathymetry-data.csv by default.
If it does not work
- Export button is greyed out — the channel has no pings yet. Wait for the recording to finish loading, then try again.
- File has no rows after the header — the loaded channel had no pings with a GPS fix. Check the GPS track on the Map tab to confirm position data is present.
- "There is no ping data to export" toast — the active channel is empty. Switch to a channel that shows sonar data and try again.