File AliasMap.h¶
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template<>
structhash
<lsst::afw::table::AliasMap>¶ Public Types
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template<>
usingresult_type
= size_t¶
Public Functions
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size_t
operator()
(argument_type const &obj) const¶
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template<>
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namespace
lsst
Class for a simple mapping implementing a generic AstrometryTransform.
Remove all non-astronomical counts from the Chunk Exposure’s pixels.
Forward declarations for lsst::utils::Cache
For details on the Cache class, see the Cache.h file.
It uses a template rather than a pointer so that the derived classes can use the specifics of the transform. The class simplePolyMapping overloads a few routines.
A base class for image defects
Numeric constants used by the Integrate.h integrator routines.
Compute Image Statistics
- Note
Gauss-Kronrod-Patterson quadrature coefficients for use in quadpack routine qng. These coefficients were calculated with 101 decimal digit arithmetic by L. W. Fullerton, Bell Labs, Nov 1981.
- Note
The Statistics class itself can only handle lsst::afw::image::MaskedImage() types. The philosophy has been to handle other types by making them look like lsst::afw::image::MaskedImage() and reusing that code. Users should have no need to instantiate a Statistics object directly, but should use the overloaded makeStatistics() factory functions.
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namespace
afw
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namespace
table
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class
AliasMap
- #include <AliasMap.h>
Mapping class that holds aliases for a Schema
Aliases need not be complete, but they must match to the beginning of a field name to be useful. For example, if “a_b_c” is a true field name, “x_->a_b” is a valid alias that will cause “x_y_c” to map to “a_b_c”, but “y_z->b_c” will not cause “a_y_z” to be matched.
Aliases are not checked to see if they match any existing fields, and if an alias has the same name as a field name, it will take precedence and hide the true field.
Unlike the other components of a Schema, aliases can be modified and removed, even after a Table has been constructed from the Schema.
AliasMaps are shared when Schemas are copy-constructed, but can be separated manually by calling Schema::disconnectAliases() or Schema::setAliasMap(). In addition, the AliasMap is deep-copied when used to construct a Table (or Catalog).
In order to allow Tables to react to changes in aliases (which may be used to define cached Keys held by the table, as in SourceTable’s “slots” mechanism), an AliasMap that is part of a Schema held by a Table will hold a pointer to that Table, and call BaseTable::handleAliasChanges() when its aliases are set or removed.
Unnamed Group
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bool
operator==
(AliasMap const &other) const Equality comparison
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bool
operator!=
(AliasMap const &other) const
Public Types
Public Functions
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AliasMap
()
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AliasMap
(AliasMap const &other) Deep-copy an AliasMap
The new AliasMap will not be linked to any tables, even if other is.
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AliasMap
(AliasMap &&other)
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~AliasMap
()
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Iterator
begin
() const Return a iterator to the beginning of the map.
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Iterator
end
() const Return a iterator to one past the end of the map.
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std::size_t
size
() const Return the number of aliases.
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bool
empty
() const Return the true if there are no aliases.
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std::string
apply
(std::string const &name) const Apply any aliases that match the given field name and return a de-aliased name.
Given a string that starts with any alias in the map, this returns a string with the part of the string that matches the alias replaced by that alias’s target. The longest such alias is used.
For example:
m = AliasMap(); m.set("q", "a"); m.set("q1", "b"); assert(m.apply("q3") == "a3"); assert(m.apply("q12") == "b2");
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std::string
get
(std::string const &alias) const Return the target of the given alias
Unlike apply(), this will not return partial matches.
- Exceptions
pex::exceptions::NotFoundError
: if no alias with the given name exists
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void
set
(std::string const &alias, std::string const &target) Add an alias to the schema or replace an existing one.
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bool
erase
(std::string const &alias) Remove an alias from the schema if it is present.
- Return
True if an alias was erased, and false if no such alias was found.
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std::size_t
hash_value
() const Return a hash of this object.
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bool
contains
(AliasMap const &other) const Return true if all aliases in this are also in other (with the same targets).
Friends
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friend
lsst::afw::table::Schema
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friend
lsst::afw::table::SubSchema
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friend
lsst::afw::table::BaseTable
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bool
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class
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namespace