The MagnaProbe is an automated snow depth measuring device that records a geolocated snow depth at the click of a button. See Sturm & Holmgren (2018) for instrument details.
This repository is a set of 'first cut' tools designed for rapidly checking the quality and nature of your MagnaProbe data.
Wrangle messy data that looks like this:
| TOA5 | 29037 | CR800 | 29037 | CR800.Std.27 | CPU:Geophys2_GPSProbe.CR8 | 60528 | OperatorView | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TIMESTAMP | RECORD | Counter | DepthCm | BattVolts | latitude_a | latitude_b | Longitude_a | Longitude_b | fix_quality | nmbr_satellites | HDOP | altitudeB | DepthVolts | LatitudeDDDDD | LongitudeDDDDD | month | dayofmonth | hourofday | minutes | seconds | microseconds |
| TS | RN | degrees | minutes | degrees | minutes | unitless | |||||||||||||||
| Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | Smp | ||
| 2017-11-14 11:27:00.75 | 5721 | 100001 | 7.283 | 13.75 | 65 | 2.4724 | -147 | -25.0191 | 1 | 5 | 1.7 | 723.9 | 0.48 | 0.04120666 | -0.416985 | 11 | 14 | 11 | 27 | 0 | 750000 |
| 2017-11-14 15:14:14.75 | 5722 | 100002 | 7.732 | 13.78 | 65 | 2.4724 | -147 | -25.0163 | 1 | 5 | 1.7 | 723.1 | 0.51 | 0.04120666 | -0.4169383 | 11 | 14 | 15 | 14 | 14 | 750000 |
| 2017-11-14 15:14:15 | 5723 | 100003 | 4.138 | 13.75 | 65 | 2.4721 | -147 | -25.0147 | 1 | 9 | 0.9 | 729.4 | 0.28 | 0.04120166 | -0.4169117 | 11 | 14 | 15 | 14 | 15 | 0 |
To a table like this:
| timestamp | counter | Latitude | Longitude | Snow Depth m | geometry | |
|---|---|---|---|---|---|---|
| 0 | 2017-11-14 15:24:38.5 | 100002 | 65.0403 | -147.418 | 0.7892 | POINT (480320.68 7213010.28) |
| 1 | 2017-11-14 15:24:39 | 100003 | 65.0403 | -147.418 | 0.7684 | POINT (480320.76 7213010.46) |
| 2 | 2017-11-14 15:24:39.5 | 100004 | 65.0403 | -147.418 | 0.7735 | POINT (480320.76 7213011.02) |
| 3 | 2017-11-14 15:24:40.25 | 100005 | 65.0403 | -147.418 | 0.728 | POINT (480321.62 7213010.83) |
So you can quickly plot these:
- geopandas 0.6.2
- pandas 0.25.3
- matplotlib 3.1.2
- numpy 1.17.3
The tools are intended to be flexible, but are configured largely for a "stock" MagnaProbe. Non-English language users or users with differently programmed hardware will need to tweak field names, calibration patterns, etc. Finally, this is not a 100% process. If you look closely, there may still be suspect points in the example data - but one of the reasons to rapidly generate the quick and dirty plots is to look for instrument errors or for data that should be discarded.
python magnaprobe.py example_data/Geo2_4_raw.dat 32606 output_data/Geo2_4_UTM.shp output_data/Geo2_4_UTM.csv
python plot_magnaprobe.py output_data/Geo2_4_UTM.shp --save_plots true