Delta Electronics SS1-UM-1.05 user manual Data file layouts and data groups

Data file layouts and data groups

If you want to get a good idea of how the data files will look, you can run the PC SunData program in the emulator mode. The general presentation of the results on screen will be similar to that in the eventual data file.

The one major exception to this is in the All mode when the 64 individual photodiode readings are listed. On the PC screen they are shown as 4 rows of 16 values, whereas in the .CSV data files they occupy 64 adjacent columns (from handle to tip of the probe) to the right of the notes field.

A single data file can contain a mixture of layouts. The column headings will be different for different combinations of equipment (BFS or not) and measurement (LAI or PAR or All) that you have chosen. Each time there is a change, the headings and titles will be revised to start a new group and give you a complete "audit trail" for your measurements. Each group contains readings with exactly the same settings.

When a new group is started, you can create a group title for it from Menu, Settings, Titles, Enter. The group title is automatically cleared when a new group is formed.

Group numbering

Data groups are numbered sequentially, starting from group 1 when the data file is created. You can't edit the group number (in the way that you can edit Plot and Sample numbers), but you can give it a title.

The group number is incremented automatically whenever you re-start the SunData program after exiting, or when you change a critical setting, that is:

•any parameter in the Settings menu

•any data or configuration file change.

SunScan User Manual v 1.05 More Psion and file handling notes • 39