B&G Deckman - Manual (Page 173)

Chapter 12: Deckman files
12.14
It is possible to take any combination of variables from the database and
calibrate and filter them in a number of different ways.
New variables are first added to the bottom of the [variables] list in the
j_varsXX.d
file and the rest of the row must also be completed
according to the standard j_varsXX.d format. The names for the
variables are read by Deckman from here. Next, in the
[UserVariables]
section, enter the Deckman identification number
of your new variable, followed by the Deckman identification number of
the variable you wish to calibrate or filter, the name of the calibration
file (which must end .cal) and the name of the filtering file (ending
.fil
).
Note. To have no filtering or calibration for any user variable, simply
enter null.cal or null.fil in the relevant place.
Two variables are included in Deckman in this section by default, and
we will use one of these as an example here: a variable showing a
moving average of true wind direction.
The new variable we are adding here is a moving average for the true
wind direction. In the [variables] section of j_varsXX.d the
line
80 MA_TWD MWD 0 0 2
has been added. The variable we are adding is therefore called
MA_TWD, has a short name MWD, has a Deckman identification
number of 80, zero decimal places, is not an absolute value and is 0-360
data. So far, this is as detailed in the [variables] section of j_varsXX.d
(see above).
Next, the line
80 7 null.cal MA_TWD.fil
is added to the [UserVariables] section of j_varsXX.d . This means that
the new variable we are creating (represented by Deckman identification
number, 80, in the first column) is using data from Deckman
identification number 7 (second column). Deckman identification