INTEGRATE...
Sequentially
adds all points from the first to the last to get a cumulative curve (this
is not 'true' mathematical integration). The window looks like the
example shown here (note that the program places an integral sign in front
of the original file label):
DERIVATIVE... Goes from
the last point to the first point (right to left), computing and storing
the change between successive points (this is not 'true' mathematical
derivation). The derivation window is nearly identical to the one
shown at right for integration (and the program places a derivation symbol
in front of the original file label).
- For both integration and derivation, if the number of channels is less
than 24, you can place results in a new channel.
NOTE: Because
numbers are stored in floating point format with 8-10 digit precision, integration
may result in loss of least-significant digits, particularly if the
numbers are large (i.e., if their cumulative sum contains more than 8-10
decimal digits). Thus integration followed
by derivation of the same data will not necessarily produce a result identical
to the original data. Normally this poses no problems to
users. |
|