- Copy numeric field
- Sum 2 Fields-add a new field with the sum of two existing
fields
- Difference 2 Fields--add a new field with the difference between
two existing fields
- Multiply 2 Fields--add a new field by multiplying two
existing fields
- Quotient 2 Fields (ratio)--add new field with the quotient of two
existing fields. If the divisor is 0, the result will be
undefined.
- The next options do not add a new field; if you want to keep the
original field, copy the field first
- Add constant to field: pick a field, and add a constant to
all records (meeting the current filter).
- Multiply field by constant: pick a field, and multiply all
records (meeting the current filter) by a constant.
- Divide field by constant: pick a field, and multiply all
records (meeting the current filter) by a constant.
- Fix compass angles: Insure all angles are in the 0-360
range
- Normalize fields--select fields will be scaled so that 0 is mean of the original field, and values represent standard deviations
from the mean. This will create a new database.
- Log of Field--If the value is 0 or negative, the result
will be undefined.
- Sin of Field--sine of field, interpreted in degrees.
- Cos of Field--sine of field, interpreted in degrees.
- Average of neighbors--requires that the neighbors
have been computed and stored, and adds a new field with
the average of their values.
- Sum of neighbors-
- Median Filter Field: better removal of outliers
compared to mean filter, since the outlier has no effect on the
filtered value.
- Mean Filter Field:
- Z statistics
- Remove missing data
- Oceanography-- require that Oceanography options are
enabled, and fields TEMP_C and SALINITY and DEPTH exist;
compute
- Sigma tee
- Sigma theta
- Sound velocity
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