pyngui¶

What is pyngui?¶

pyngui is a desktop application to read, visualize and export files recorded by SnowMicroPen (pnt files).

Launch pyngui¶

When the snowicropyn package is installed, a simple script to start pyngui is registered too. Open a Terminal Window and type pyngui and hit return. A window should open which looks like this screenshot:

Probably, this command fails to launch pyngui. Try to launch it manually then. Type:

python -m snowmicropyn.pyngui.app

or:

python3 -m snowmicropyn.pyngui.app

Features & Tips¶

Save your changes!¶

pyngui does not prompt or warn for unsaved changes. Don’t forget to save your markers, otherwise they will be lost.

Loading profiles on startup¶

You can load a list of profiles by giving their file paths as command line arguments:

python3 -m snowmicropyn.pyngui.app examples/profiles/S37M0876.pnt

Surface & ground¶

pyngui uses the marker labels surface and ground to mark the beginning and end of the snowpack. You can let pyngui auto-detect those markers for you by clicking the according icons in the toolbar.

Drift, Offset & Noise¶

For each profile, the pyngui calculates drift, offset and noise and displays those values in the sidebar. This data is useful to check for a bad signal. The values are calculated for a section within the signal. Where this section starts and ends is indicated in the sidebar. In case you want to specify the section yourself, set markers called drift_begin and drift_end. The simplest way to do so is context clicking into the plot.