The STELLA Data Viewer is a way to display and perform some basic analysis of the data collected by STELLA instruments. It currently works with STELLA version Q, 1.0, 1.1, and 2.0 and must be used with the Chrome browser. Below are instructions on how to use the Data Viewer.
Import Data
Use the Data Viewer to view and analyze STELLA data. To import data into the Data Viewer, you can either:
- Connect STELLA to your computer via a USB cable
- Upload data to your computer via the microSD card
Connect STELLA to Computer
Power on the STELLA unit and wait until it boots up. Open the Data Viewer in your browser and plug STELLA directly to your computer with a USB-C cable. Click connect_device on the Data Viewer welcome screen. A small window will appear, prompting you to connect your device. Click connect. The Data Viewer will populate with the STELLA display and graph of the raw and numerical data. These displays can be toggled on and off.
Upload Data
To upload data to the Data Viewer, power off the STELLA, remove the microSD card, insert cards into the microSD adaptor, and insert the adaptor into the computer. From the Data Viewer welcome screen, select upload_file and select the .csv file on the microSD card drive. By default, the Data Viewer will display a graph of the raw data.
Exploring the Data
Once the data has been imported into the Data Viewer, the raw data will appear in a graph on the main display. The Data Viewer sidebar allows the user to select which data batch, graph, and calibration batch is currently visible. Also shown are batch metadata including date, time, and relative humidity. Once the calibration batch is selected, raw data, spectral indices, and air and surface temperature can be displayed and analyzed.
