Download IDL_HS Version 4: User's Guide

Figure 19: The menu for entering the time range for a dataset.
12.3 Sectoring
Applies to RATE, SPECT and DYN_SPECT datasets.
For datasets where all the streams have the same number of sectors, an arbitrary combination of sectors
can be selected (e.g. if you really want to you can plot the average, sector 1 and sector 3). If the selected
streams have differing numbers of sectors, then only sector averages or all sectors can be selected at the
dataset level (however detailed selections can be made for the individual streams—the control for this is
very similar to that for datasets). If you try to set sector selection before you have attached any streams to
the dataset, then you will only have the choice of average or all. At present there is no phase-angle sorting
of the sectors.
The “All” button in the menu selects all the individual sectors, and NOT the average. The “Everything”
button selects all the individual sectors and the average.
12.4 Averaging
Applies to RATE, PAD and DYN_SPECT datasets.
This allows you to set an averaging interval for the current dataset.
As with earlier versions, overlapping averages are possible. If the spacing is set to zero, that is equivalent
to setting it equal to the averaging interval (i.e. non-overlapping averages). Unlike earlier versions “gappy”
averages are possible; this is likely to be of most use in PAD datasets where (for example) using hourly
averages would smear out what you wanted to see, but 5-minute averages would overwhelm you with data;
in that case 5-minute averages every hour may be what you need.
If the averaging interval is less than the cadence of the datset, averaging will not take place, unless the
forced average option is selected.
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