DOC: add documentation of new predicates
@@ -251,7 +251,9 @@ expressions and objects:
1. A `Vega expression`_ expressed as a string or built using the :mod:`~expr` module
2. A Field predicate, such as :class:`~FieldOneOfPredicate`,
- :class:`~FieldRangePredicate`, or :class:`~FieldEqualPredicate`
+ :class:`~FieldRangePredicate`, :class:`~FieldEqualPredicate`,
+ :class:`~FieldLTPredicate`, :class:`~FieldGTPredicate`,
+ :class:`~FieldLTEPredicate`, :class:`~FieldGTEPredicate`,
3. A Selection predicate or object created by :func:`selection`
4. A Logical operand that combines any of the above
@@ -295,6 +297,14 @@ are:
specified values.
- :class:`~FieldRangePredicate` evaluates whether a continuous field is within
a range of values.
+- :class:`~FieldLTPredicate` evaluates whether a continuous field is less
+ than a given value
+- :class:`~FieldGTPredicate` evaluates whether a continuous field is greater
+ than a given value
+- :class:`~FieldLTEPredicate` evaluates whether a continuous field is less
+ than or equal to a given value
+- :class:`~FieldGTEPredicate` evaluates whether a continuous field is greater
+ than or equal to a given value
Here is an examaple of a :class:`~FieldEqualPredicate` used to select just the
values from year 2000 as in the above chart:
