CinePlex v3 Manual - Plexon Inc

— max – the largest time difference encountered in seconds
— non-gap avg – the average time difference in seconds when the discovered
gaps are excluded from the calculation
• Gap Sizes - This box lists of the distribution of skipped occurrences (gaps);
for example, 0 : nnn indicates the number of number of pairs without a missing
timestamp between them, 1 : nnn indicates the number with one timestamp
missing, 2 : nnn indicates the number with two missing timestamps,
and so on.
• Timestamp Determination - The area contains the following two selections:
— Assume Periodicity – This selection assumes that the data is periodic
and adds marker occurrences accordingly.
— Use Frame Marker Times – This selection adds missing marker
occurrences at the frame markers.
• Value Interpolation - The area contains the following two selections:
— Sample-and-hold the previous value – This selection assigns a value
(or coordinates) to the new marker occurrences added to fill a gap,
which is the same as the value (or coordinates) of the last pre-gap
marker occurrence.
— Linear Interpolation – This selection assigns values to the new
marker occurrences added to fill a gap that are calculated to fall on a
line connecting the last pre-gap value (or coordinates) with the first
post-gap value (or coordinates).
If the marker being interpolated is a scalar marker or a coordinates marker, the
tool can calculate reasonable values to apply to the added marker occurrences by
using one of two methods:
Generate new Time-only Marker at times for added Occurrences
• Generate new Time-only Marker at times for added Occurrences -
This selection enables the tool to define and populate a new marker named
Interpolated X, where X is the name of the marker being interpolated, and
which has occurrences at the times where interpolated marker occurrences are
added. In effect, this differentiates the occurrences of the selected marker that
are generated via interpolation from those that are part of the original data.
How the Interpolation Algorithm Works
The interpolation tool is capable of calculating both the times at which new
marker occurrences need to be added (that is, where the gaps appear), and for
Scalar markers and Coordinates markers, what values need to be given to the
added marker occurrences. Obviously, when finding the times where there are
gaps, there is an implicit assumption of periodicity in the marker occurrences.
This may or may not be the case with the marker occurrences for the selected
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