MatchFakesConfig¶

class lsst.pipe.tasks.matchFakes.MatchFakesConfig(*args, **kw)¶

Bases: InsertFakesConfig

Config for MatchFakesTask.

Attributes Summary

`aBulge`	The column name for the semi major axis length of the bulge component.
`aDisk`	The column name for the semi major axis length of the disk component used in the fake sourcecatalog.
`angle_col`	Source catalog column name for trail angle (in radians).
`bBulge`	The column name for the semi minor axis length of the bulge component used in the fake source catalog.
`bDisk`	The column name for the semi minor axis length of the disk component.
`bulgeHLR`	Column name for the bulge half light radius used in the fake source catalog.
`bulge_axis_ratio_col`	Source catalog column name for the axis ratio of the bulge half-light ellipse.
`bulge_disk_flux_ratio_col`	Source catalog column name for the bulge/disk flux ratio.
`bulge_n_col`	Source catalog column name for the Sersic index of the bulge.
`bulge_pa_col`	Source catalog column name for the position angle (measured from North through East in degrees) of the semimajor axis of the bulge half-light ellipse.
`bulge_semimajor_col`	Source catalog column name for the semimajor axis (in arcseconds) of the bulge half-light ellipse.
`calibFluxRadius`	Aperture radius (in pixels) that was used to define the calibration for this image+catalog.
`coaddName`	The name of the type of coadd used (`str`, default `'deep'`)
`connections`	Field which refers to a dynamically added configuration class which is based on a PipelineTaskConnections class.
`decColName`	Dec.
`dec_col`	Source catalog column name for dec (in radians).
`diskHLR`	Column name for the disk half light radius used in the fake source catalog.
`disk_axis_ratio_col`	Source catalog column name for the axis ratio of the disk half-light ellipse.
`disk_n_col`	Source catalog column name for the Sersic index of the disk.
`disk_pa_col`	Source catalog column name for the position angle (measured from North through East in degrees) of the semimajor axis of the disk half-light ellipse.
`disk_semimajor_col`	Source catalog column name for the semimajor axis (in arcseconds) of the disk half-light ellipse.
`doCleanCat`	If true removes bad sources from the catalog.
`doMatchVisit`	Match visit to trim the fakeCat (`bool`, default `False`)
`doProcessAllDataIds`	If True, all input data IDs will be processed, even those containing no fake sources.
`doSubSelectSources`	Set to True if you wish to sub select sources to be input based on the value in the columnset in the sourceSelectionColName config option.
`fakeType`	What type of fake catalog to use, snapshot (includes variability in the magnitudes calculated from the MJD of the image), static (no variability) or filename for a user defined fitscatalog.
`fits_alignment`	How should injections from FITS files be aligned? (`str`, default `'pixel'`)
`history`
`insertImages`	Insert images directly? True or False.
`insertOnlyStars`	Insert only stars? True or False.
`length_col`	Source catalog column name for trail length (in pixels).
`magVar`	The column name for the magnitude calculated taking variability into account.
`mag_col`	Source catalog column name template for magnitudes, in the format ``filter name``_mag_col.
`matchDistanceArcseconds`	Distance in arcseconds to match within.
`nBulge`	The column name for the sersic index of the bulge component used in the fake source catalog.
`nDisk`	The column name for the sersic index of the disk component used in the fake source catalog.
`paBulge`	The column name for the PA of the bulge component used in the fake source catalog.
`paDisk`	The column name for the PA of the disk component used in the fake source catalog.
`raColName`	RA column name used in the fake source catalog.
`ra_col`	Source catalog column name for RA (in radians).
`saveLogOutput`	Flag to enable/disable saving of log output for a task, enabled by default.
`saveMetadata`	Flag to enable/disable metadata saving for a task, enabled by default.
`select_col`	Source catalog column name to be used to select which sources to add.
`sourceSelectionColName`	The name of the column in the input fakes catalogue to be used to determine which sources toadd, default is none and when this is used all sources are added.
`sourceType`	The column name for the source type used in the fake source catalog.
`trimBuffer`	Size of the pixel buffer surrounding the image.

Methods Summary

`applyConfigOverrides`(instrument, ...)	Apply config overrides to this config instance.
`compare`(other[, shortcut, rtol, atol, output])	Compare this configuration to another `Config` for equality.
`formatHistory`(name, **kwargs)	Format a configuration field's history to a human-readable format.
`freeze`()	Make this config, and all subconfigs, read-only.
`items`()	Get configurations as `(field name, field value)` pairs.
`keys`()	Get field names.
`load`(filename[, root])	Modify this config in place by executing the Python code in a configuration file.
`loadFromStream`(stream[, root, filename])	Modify this Config in place by executing the Python code in the provided stream.
`loadFromString`(code[, root, filename])	Modify this Config in place by executing the Python code in the provided string.
`names`()	Get all the field names in the config, recursively.
`save`(filename[, root])	Save a Python script to the named file, which, when loaded, reproduces this config.
`saveToStream`(outfile[, root, skipImports])	Save a configuration file to a stream, which, when loaded, reproduces this config.
`saveToString`([skipImports])	Return the Python script form of this configuration as an executable string.
`setDefaults`()	Subclass hook for computing defaults.
`toDict`()	Make a dictionary of field names and their values.
`update`(**kw)	Update values of fields specified by the keyword arguments.
`validate`()	Validate the Config, raising an exception if invalid.
`values`()	Get field values.

Attributes Documentation

aBulge¶: The column name for the semi major axis length of the bulge component. Deprecated: Use bulge_semimajor_col, bulge_axis_ratio_col, and bulge_pa_col to specify disk half-light ellipse. (str, default 'a_b')

aDisk¶: The column name for the semi major axis length of the disk component used in the fake sourcecatalog. Deprecated: Use disk_semimajor_col, disk_axis_ratio_col, and disk_pa_col to specify disk half-light ellipse. (str, default 'a_d')

angle_col¶: Source catalog column name for trail angle (in radians). (str, default 'trail_angle')

bBulge¶: The column name for the semi minor axis length of the bulge component used in the fake source catalog. Deprecated: Use bulge_semimajor_col, bulge_axis_ratio_col, and bulge_pa_col to specify disk half-light ellipse. (str, default 'b_b')

bDisk¶: The column name for the semi minor axis length of the disk component. Deprecated: Use disk_semimajor_col, disk_axis_ratio_col, and disk_pa_col to specify disk half-light ellipse. (str, default 'b_d')

bulgeHLR¶: Column name for the bulge half light radius used in the fake source catalog. Deprecated: Use bulge_semimajor_col, bulge_axis_ratio_col, and bulge_pa_col to specify disk half-light ellipse. (str, default 'BulgeHalfLightRadius')

bulge_axis_ratio_col¶: Source catalog column name for the axis ratio of the bulge half-light ellipse. (str, default 'bulge_axis_ratio')

bulge_disk_flux_ratio_col¶: Source catalog column name for the bulge/disk flux ratio. (str, default 'bulge_disk_flux_ratio')

bulge_n_col¶: Source catalog column name for the Sersic index of the bulge. (str, default 'bulge_n')

bulge_pa_col¶: Source catalog column name for the position angle (measured from North through East in degrees) of the semimajor axis of the bulge half-light ellipse. (str, default 'bulge_pa')

bulge_semimajor_col¶: Source catalog column name for the semimajor axis (in arcseconds) of the bulge half-light ellipse. (str, default 'bulge_semimajor')

calibFluxRadius¶: Aperture radius (in pixels) that was used to define the calibration for this image+catalog. This will be used to produce the correct instrumental fluxes within the radius. This value should match that of the field defined in slot_CalibFlux_instFlux. (float, default 12.0)

coaddName¶: The name of the type of coadd used (str, default 'deep')

connections: pexConfig.ConfigField¶: Field which refers to a dynamically added configuration class which is based on a PipelineTaskConnections class.

decColName¶: Dec. column name used in the fake source catalog. Deprecated: Use dec_col instead. (str, default 'decJ2000')

dec_col¶: Source catalog column name for dec (in radians). (str, default 'dec')

diskHLR¶: Column name for the disk half light radius used in the fake source catalog. Deprecated: Use disk_semimajor_col, disk_axis_ratio_col, and disk_pa_col to specify disk half-light ellipse. (str, default 'DiskHalfLightRadius')

disk_axis_ratio_col¶: Source catalog column name for the axis ratio of the disk half-light ellipse. (str, default 'disk_axis_ratio')

disk_n_col¶: Source catalog column name for the Sersic index of the disk. (str, default 'disk_n')

disk_pa_col¶: Source catalog column name for the position angle (measured from North through East in degrees) of the semimajor axis of the disk half-light ellipse. (str, default 'disk_pa')

disk_semimajor_col¶: Source catalog column name for the semimajor axis (in arcseconds) of the disk half-light ellipse. (str, default 'disk_semimajor')

doCleanCat¶: If true removes bad sources from the catalog. (bool, default True)

doMatchVisit¶: Match visit to trim the fakeCat (bool, default False)

doProcessAllDataIds¶: If True, all input data IDs will be processed, even those containing no fake sources. (bool, default False)

doSubSelectSources¶: Set to True if you wish to sub select sources to be input based on the value in the columnset in the sourceSelectionColName config option. (bool, default False)

fakeType¶: What type of fake catalog to use, snapshot (includes variability in the magnitudes calculated from the MJD of the image), static (no variability) or filename for a user defined fitscatalog. (str, default 'static')

fits_alignment¶

How should injections from FITS files be aligned? (str, default 'pixel')

Allowed values:

'wcs': Input image will be transformed such that the local WCS in the FITS header matches the local WCS in the target image. I.e., North, East, and angular distances in the input image will match North, East, and angular distances in the target image.
'pixel': Input image will _not_ be transformed. Up, right, and pixel distances in the input image will match up, right and pixel distances in the target image.
'None': Field is optional

history¶: Read-only history.

insertImages¶: Insert images directly? True or False. (bool, default False)

insertOnlyStars¶: Insert only stars? True or False. (bool, default False)

length_col¶: Source catalog column name for trail length (in pixels). (str, default 'trail_length')

magVar¶: The column name for the magnitude calculated taking variability into account. In the format filter name``magVar, e.g. imagVar for the magnitude in the i band. Deprecated: Use `mag_col` instead. (`str`, default ``'%smagVar')

mag_col¶: Source catalog column name template for magnitudes, in the format filter name``_mag_col. E.g., if this config variable is set to ``%s_mag, then the i-band magnitude will be searched for in the i_mag column of the source catalog. (str, default '%s_mag')

matchDistanceArcseconds¶

Distance in arcseconds to match within. (float, default 0.5)

Valid Range = [0,10)

nBulge¶: The column name for the sersic index of the bulge component used in the fake source catalog. Deprecated: Use bulge_n_col instead. (str, default 'bulge_n')

nDisk¶: The column name for the sersic index of the disk component used in the fake source catalog. Deprecated: Use disk_n_col instead. (str, default 'disk_n')

paBulge¶: The column name for the PA of the bulge component used in the fake source catalog. Deprecated: Use bulge_semimajor_col, bulge_axis_ratio_col, and bulge_pa_col to specify disk half-light ellipse. (str, default 'pa_bulge')

paDisk¶: The column name for the PA of the disk component used in the fake source catalog. Deprecated: Use disk_semimajor_col, disk_axis_ratio_col, and disk_pa_col to specify disk half-light ellipse. (str, default 'pa_disk')

raColName¶: RA column name used in the fake source catalog. Deprecated: Use ra_col instead. (str, default 'raJ2000')

ra_col¶: Source catalog column name for RA (in radians). (str, default 'ra')

saveLogOutput¶: Flag to enable/disable saving of log output for a task, enabled by default. (bool, default True)

saveMetadata¶: Flag to enable/disable metadata saving for a task, enabled by default. (bool, default True)

select_col¶: Source catalog column name to be used to select which sources to add. (str, default 'select')

sourceSelectionColName¶: The name of the column in the input fakes catalogue to be used to determine which sources toadd, default is none and when this is used all sources are added. Deprecated: Use select_col instead. (str, default 'templateSource')

sourceType¶: The column name for the source type used in the fake source catalog. (str, default 'sourceType')

trimBuffer¶: Size of the pixel buffer surrounding the image. Only those fake sources with a centroidfalling within the image+buffer region will be considered matches. (int, default 100)

Methods Documentation

applyConfigOverrides(instrument: Instrument | None, taskDefaultName: str, pipelineConfigs: Iterable[ConfigIR] | None, parameters: ParametersIR, label: str) → None¶

Apply config overrides to this config instance.

Parameters¶

instrumentInstrument or None: An instance of the Instrument specified in a pipeline. If None then the pipeline did not specify and instrument.
taskDefaultNamestr: The default name associated with the Task class. This may be used with instrumental overrides.
pipelineConfigsIterable of ConfigIR: An iterable of ConfigIR objects that contain overrides to apply to this config instance.
parametersParametersIR: Parameters defined in a Pipeline which are used in formatting of config values across multiple Tasks in a pipeline.
labelstr: The label associated with this class’s Task in a pipeline.

compare(other, shortcut=True, rtol=1e-08, atol=1e-08, output=None)¶

Compare this configuration to another Config for equality.

Parameters:

otherlsst.pex.config.Config: Other Config object to compare against this config.
shortcutbool, optional: If True, return as soon as an inequality is found. Default is True.
rtolfloat, optional: Relative tolerance for floating point comparisons.
atolfloat, optional: Absolute tolerance for floating point comparisons.
outputcallable, optional: A callable that takes a string, used (possibly repeatedly) to report inequalities.

Returns:

isEqualbool: True when the two lsst.pex.config.Config instances are equal. False if there is an inequality.

See also

lsst.pex.config.compareConfigs

Notes

Unselected targets of RegistryField fields and unselected choices of ConfigChoiceField fields are not considered by this method.

Floating point comparisons are performed by numpy.allclose.

formatHistory(name, **kwargs)¶

Format a configuration field’s history to a human-readable format.

Parameters:

namestr: Name of a Field in this config.
kwargs: Keyword arguments passed to lsst.pex.config.history.format.

Returns:

historystr: A string containing the formatted history.

See also

lsst.pex.config.history.format

freeze()¶: Make this config, and all subconfigs, read-only.

items()¶

Get configurations as (field name, field value) pairs.

Returns:

itemsdict_items

Iterator of tuples for each configuration. Tuple items are:

Field name.
Field value.

keys()¶

Get field names.

Returns:

namesdict_keys: List of lsst.pex.config.Field names.

See also

lsst.pex.config.Config.iterkeys

load(filename, root='config')¶

Modify this config in place by executing the Python code in a configuration file.

Parameters:

filenamestr

Name of the configuration file. A configuration file is Python module.

rootstr, optional

Name of the variable in file that refers to the config being overridden.

For example, the value of root is "config" and the file contains:

config.myField = 5

Then this config’s field myField is set to 5.

See also

lsst.pex.config.Config.loadFromStream
lsst.pex.config.Config.loadFromString
lsst.pex.config.Config.save
lsst.pex.config.Config.saveToStream
lsst.pex.config.Config.saveToString

loadFromStream(stream, root='config', filename=None)¶

Modify this Config in place by executing the Python code in the provided stream.

Parameters:

streamfile-like object, str, bytes, or compiled string

Stream containing configuration override code. If this is a code object, it should be compiled with mode="exec".

rootstr, optional

Name of the variable in file that refers to the config being overridden.

For example, the value of root is "config" and the file contains:

config.myField = 5

Then this config’s field myField is set to 5.

filenamestr, optional

Name of the configuration file, or None if unknown or contained in the stream. Used for error reporting.

See also

lsst.pex.config.Config.load
lsst.pex.config.Config.loadFromString
lsst.pex.config.Config.save
lsst.pex.config.Config.saveToStream
lsst.pex.config.Config.saveToString

Notes

For backwards compatibility reasons, this method accepts strings, bytes and code objects as well as file-like objects. New code should use loadFromString instead for most of these types.

loadFromString(code, root='config', filename=None)¶

Modify this Config in place by executing the Python code in the provided string.

Parameters:

codestr, bytes, or compiled string

Stream containing configuration override code.

rootstr, optional

Name of the variable in file that refers to the config being overridden.

For example, the value of root is "config" and the file contains:

config.myField = 5

Then this config’s field myField is set to 5.

filenamestr, optional

Name of the configuration file, or None if unknown or contained in the stream. Used for error reporting.

See also

lsst.pex.config.Config.load
lsst.pex.config.Config.loadFromStream
lsst.pex.config.Config.save
lsst.pex.config.Config.saveToStream
lsst.pex.config.Config.saveToString

names()¶

Get all the field names in the config, recursively.

Returns:

nameslist of str: Field names.

save(filename, root='config')¶

Save a Python script to the named file, which, when loaded, reproduces this config.

Parameters:

filenamestr: Desination filename of this configuration.
rootstr, optional: Name to use for the root config variable. The same value must be used when loading (see lsst.pex.config.Config.load).

See also

lsst.pex.config.Config.saveToStream
lsst.pex.config.Config.saveToString
lsst.pex.config.Config.load
lsst.pex.config.Config.loadFromStream
lsst.pex.config.Config.loadFromString

saveToStream(outfile, root='config', skipImports=False)¶

Save a configuration file to a stream, which, when loaded, reproduces this config.

Parameters:

outfilefile-like object: Destination file object write the config into. Accepts strings not bytes.
root: Name to use for the root config variable. The same value must be used when loading (see lsst.pex.config.Config.load).
skipImportsbool, optional: If True then do not include import statements in output, this is to support human-oriented output from pipetask where additional clutter is not useful.

See also

lsst.pex.config.Config.save
lsst.pex.config.Config.saveToString
lsst.pex.config.Config.load
lsst.pex.config.Config.loadFromStream
lsst.pex.config.Config.loadFromString

saveToString(skipImports=False)¶

Return the Python script form of this configuration as an executable string.

Parameters:

skipImportsbool, optional: If True then do not include import statements in output, this is to support human-oriented output from pipetask where additional clutter is not useful.

Returns:

codestr: A code string readable by loadFromString.

See also

lsst.pex.config.Config.save
lsst.pex.config.Config.saveToStream
lsst.pex.config.Config.load
lsst.pex.config.Config.loadFromStream
lsst.pex.config.Config.loadFromString

setDefaults()¶

Subclass hook for computing defaults.

Notes

Derived Config classes that must compute defaults rather than using the Field instances’s defaults should do so here. To correctly use inherited defaults, implementations of setDefaults must call their base class’s setDefaults.

toDict()¶

Make a dictionary of field names and their values.

Returns:

dict_dict: Dictionary with keys that are Field names. Values are Field values.

See also

lsst.pex.config.Field.toDict

Notes

This method uses the toDict method of individual fields. Subclasses of Field may need to implement a toDict method for this method to work.

update(**kw)¶

Update values of fields specified by the keyword arguments.

Parameters:

kw: Keywords are configuration field names. Values are configuration field values.

Notes

The __at and __label keyword arguments are special internal keywords. They are used to strip out any internal steps from the history tracebacks of the config. Do not modify these keywords to subvert a Config instance’s history.

Examples

This is a config with three fields:

>>> from lsst.pex.config import Config, Field
>>> class DemoConfig(Config):
...     fieldA = Field(doc='Field A', dtype=int, default=42)
...     fieldB = Field(doc='Field B', dtype=bool, default=True)
...     fieldC = Field(doc='Field C', dtype=str, default='Hello world')
...
>>> config = DemoConfig()

These are the default values of each field:

>>> for name, value in config.iteritems():
...     print(f"{name}: {value}")
...
fieldA: 42
fieldB: True
fieldC: 'Hello world'

Using this method to update fieldA and fieldC:

>>> config.update(fieldA=13, fieldC='Updated!')

Now the values of each field are:

>>> for name, value in config.iteritems():
...     print(f"{name}: {value}")
...
fieldA: 13
fieldB: True
fieldC: 'Updated!'

validate()¶

Validate the Config, raising an exception if invalid.

Raises:

lsst.pex.config.FieldValidationError: Raised if verification fails.

Notes

The base class implementation performs type checks on all fields by calling their validate methods.

Complex single-field validation can be defined by deriving new Field types. For convenience, some derived lsst.pex.config.Field-types (ConfigField and ConfigChoiceField) are defined in lsst.pex.config that handle recursing into subconfigs.

Inter-field relationships should only be checked in derived Config classes after calling this method, and base validation is complete.

values()¶

Get field values.

Returns:

valuesdict_values: Iterator of field values.

Navigation

MatchFakesConfig¶

Parameters¶