FgcmFitCycleConfig¶

class lsst.fgcmcal.FgcmFitCycleConfig¶

Bases: lsst.pex.config.Config

Config for FgcmFitCycle

Attributes Summary

`aperCorrFitNBins`	Number of aperture bins used in aperture correction fit.
`aperCorrInputSlopeDict`	Per-band specification of aperture correction input slope parameters.
`aperCorrInputSlopes`	Aperture correction input slope parameters.
`applyRefStarColorCuts`	Apply color cuts to reference stars? (`bool`, default `True`)
`approxThroughput`	Approximate overall throughput at start of calibration observations.
`approxThroughputDict`	Per-band specification of the approximate overall throughput at the start of calibration observations.
`autoHighCutNSig`	Number of sigma for automatic computation of (high) outlier cut.
`autoPhotometricCutNSig`	Number of sigma for automatic computation of (low) photometric cut.
`bands`	Bands to run calibration (`List`, default `[]`)
`brightObsGrayMax`	Maximum gray extinction to be considered bright observation (`float`, default `0.15`)
`ccdGrayMaxStarErr`	Maximum error on a star observation to use in ccd gray (achromatic residual) computation (`float`, default `0.1`)
`ccdGraySubCcd`	Compute CCD gray terms on sub-ccd scale Deprecated: This field is no longer used, and has been deprecated by DM-23699.
`ccdGraySubCcdChebyshevOrder`	Order of the 2D chebyshev polynomials for sub-ccd gray fit.
`ccdGraySubCcdDict`	Per-band specification on whether to compute achromatic per-ccd residual (‘ccd gray’) on a sub-ccd scale.
`ccdGraySubCcdTriangular`	Should the sub-ccd gray chebyshev matrix be triangular to suppress high-order cross terms? (`bool`, default `True`)
`coatingMjds`	Mirror coating dates in MJD (`List`, default `(0.0,)`)
`colorSplitBands`	Band names to use to split stars by color.
`colorSplitIndices`	Band indices to use to split stars by color Deprecated: This field is no longer used, and has been deprecated by DM-23699.
`cycleNumber`	FGCM fit cycle number.
`doReferenceCalibration`	Use reference catalog as additional constraint on calibration (`bool`, default `True`)
`epochMjds`	Epoch boundaries in MJD (`List`, default `(0.0,)`)
`expGrayErrRecoverCut`	Maximum exposure gray error to be able to recover bad ccds via interpolation.
`expGrayHighCut`	Maximum (positive) exposure gray for a visit to be considered photometric.
`expGrayHighCutDict`	Per-band specification on maximum (positive) achromatic exposure residual (‘gray term’) for a visit to be considered photometric.
`expGrayInitialCut`	Maximum exposure/visit gray value for initial selection of possible photometric observations.
`expGrayPhotometricCut`	Maximum (negative) exposure gray for a visit to be considered photometric.
`expGrayPhotometricCutDict`	Per-band specification on maximum (negative) achromatic exposure residual (‘gray term’) for a visit to be considered photometric.
`expGrayRecoverCut`	Maximum (negative) exposure gray to be able to recover bad ccds via interpolation.
`expVarGrayPhotometricCut`	Maximum exposure variance to be considered possibly photometric Deprecated: This field is no longer used, and has been deprecated by DM-23699.
`expVarGrayPhotometricCutDict`	Per-band specification on maximum exposure variance to be considered possibly photometric.
`filterMap`	Mapping from ‘filterName’ to band.
`fitBands`	Bands to use in atmospheric fit.
`fitFlag`	Flag for which bands are directly constrained in the FGCM fit.
`fitMirrorChromaticity`	Fit (intraband) mirror chromatic term? (`bool`, default `False`)
`freezeStdAtmosphere`	Freeze atmosphere parameters to standard (for testing) (`bool`, default `False`)
`history`
`instrumentParsPerBand`	Model instrumental parameters per band? Otherwise, instrumental parameters (QE changes with time) are shared among all bands.
`instrumentSlopeMinDeltaT`	Minimum time change (in days) between observations to use in constraining instrument slope.
`isFinalCycle`	Is this the final cycle of the fitting? Will automatically compute final selection of stars and photometric exposures, and will output zeropoints and standard stars for use in fgcmOutputProducts (`bool`, default `False`)
`latitude`	Observatory latitude (`float`)
`mapLongitudeRef`	Reference longitude for plotting maps (`float`, default `0.0`)
`mapNSide`	Healpix nside for plotting maps (`int`, default `256`)
`maxCcdGrayErr`	Maximum error on CCD gray offset to be considered photometric (`float`, default `0.05`)
`maxIterBeforeFinalCycle`	Maximum fit iterations, prior to final cycle.
`minCcdPerExp`	Minimum number of good CCDs per exposure/visit to be used in calibration fit.
`minExpPerNight`	Minimum number of good exposures/visits to consider a partly photometric night (`int`, default `10`)
`minObsPerBand`	Minimum good observations per band (`int`, default `2`)
`minStarPerCcd`	Minimum number of good stars per CCD to be used in calibration fit.
`minStarPerExp`	Minimum number of good stars per exposure/visit to be used in calibration fit.
`modelMagErrors`	Should FGCM model the magnitude errors from sky/fwhm? (False means trust inputs) (`bool`, default `True`)
`nCore`	Number of cores to use (`int`, default `4`)
`nExpPerRun`	Number of exposures to run in each chunk (`int`, default `1000`)
`nStarPerRun`	Number of stars to run in each chunk (`int`, default `200000`)
`outfileBase`	Filename start for plot output files (`str`)
`outputStandardsBeforeFinalCycle`	Output standard stars prior to final cycle? Used in debugging.
`outputZeropointsBeforeFinalCycle`	Output standard stars prior to final cycle? Used in debugging.
`precomputeSuperStarInitialCycle`	Precompute superstar flat for initial cycle (`bool`, default `False`)
`quietMode`	Be less verbose with logging.
`refStarOutlierNSig`	Number of sigma compared to average mag for reference star to be considered an outlier.
`refStarSnMin`	Reference star signal-to-noise minimum to use in calibration.
`requiredBands`	Bands that are required for a star to be considered a calibration star.
`requiredFlag`	Flag for which bands are required for a star to be considered a calibration star in the FGCM fit.
`reserveFraction`	Fraction of stars to reserve for testing (`float`, default `0.1`)
`sedFudgeFactors`	Fudge factors for computing linear SED from colors.
`sedboundaryterms`	Mapping from bands to SED boundary term names used is sedterms.
`sedterms`	Mapping from terms to bands for fgcm linear SED approximations.
`sigFgcmMaxEGray`	Maximum (absolute) gray value for observation in sigma_FGCM.
`sigFgcmMaxEGrayDict`	Per-band specification for maximum (absolute) achromatic residual (gray value) for observations in sigma_fgcm (raw repeatability).
`sigFgcmMaxErr`	Maximum mag error for fitting sigma_FGCM (`float`, default `0.01`)
`sigma0Phot`	Systematic error floor for all zeropoints (`float`, default `0.003`)
`sigmaCalFitPercentile`	Magnitude percentile range to fit systematic error floor (`List`, default `(0.05, 0.15)`)
`sigmaCalPlotPercentile`	Magnitude percentile range to plot systematic error floor (`List`, default `(0.05, 0.95)`)
`sigmaCalRange`	Allowed range for systematic error floor estimation (`List`, default `(0.001, 0.003)`)
`starColorCuts`	Encoded star-color cuts (to be cleaned up) (`List`, default `('NO_DATA',)`)
`superStarSigmaClip`	Number of sigma to clip outliers when selecting for superstar flats (`float`, default `5.0`)
`superStarSubCcd`	Compute superstar flat on sub-ccd scale Deprecated: This field is no longer used, and has been deprecated by DM-23699.
`superStarSubCcdChebyshevOrder`	Order of the 2D chebyshev polynomials for sub-ccd superstar fit.
`superStarSubCcdDict`	Per-band specification on whether to compute superstar flat on sub-ccd scale.
`superStarSubCcdTriangular`	Should the sub-ccd superstar chebyshev matrix be triangular to suppress high-order cross terms? (`bool`, default `False`)
`useQuadraticPwv`	Model PWV with a quadratic term for variation through the night? (`bool`, default `False`)
`useRepeatabilityForExpGrayCuts`	Use star repeatability (instead of exposures) for computing photometric cuts? Recommended for tract mode or bands with few exposures.
`useRepeatabilityForExpGrayCutsDict`	Per-band specification on whether to use star repeatability (instead of exposures) for computing photometric cuts.
`utBoundary`	Boundary (in UTC) from day-to-day (`float`)
`washMjds`	Mirror wash MJDs (`List`, default `(0.0,)`)

Methods Summary

`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.
`iteritems`()	Iterate over (field name, field value) pairs.
`iterkeys`()	Iterate over field names
`itervalues`()	Iterate over field values.
`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.
`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.
`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

aperCorrFitNBins¶: Number of aperture bins used in aperture correction fit. When set to 0no fit will be performed, and the config.aperCorrInputSlopes will be used if available. (int, default 10)

aperCorrInputSlopeDict¶: Per-band specification of aperture correction input slope parameters. These are used on the first fit iteration, and aperture correction parameters will be updated from the data if config.aperCorrFitNBins > 0. It is recommended to set this when there is insufficient data to fit the parameters (e.g. tract mode). (Dict, default {})

aperCorrInputSlopes¶: Aperture correction input slope parameters. These are used on the first fit iteration, and aperture correction parameters will be updated from the data if config.aperCorrFitNBins > 0. It is recommended to set thiswhen there is insufficient data to fit the parameters (e.g. tract mode). If set, must be same length as config.bands, and matched band-by-band. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use aperCorrInputSlopeDict instead. (List, default [])

applyRefStarColorCuts¶: Apply color cuts to reference stars? (bool, default True)

approxThroughput¶: Approximate overall throughput at start of calibration observations. May be 1 element (same for all bands) or the same length as config.bands. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use approxThroughputDict instead. (List, default (1.0,))

approxThroughputDict¶: Per-band specification of the approximate overall throughput at the start of calibration observations. Must have one entry per band. Typically should be 1.0. (Dict, default {})

autoHighCutNSig¶: Number of sigma for automatic computation of (high) outlier cut. Cut is based on exposure gray width (per band), unless useRepeatabilityForExpGrayCuts is set, in which case the star repeatability is used (also per band). (float, default 4.0)

autoPhotometricCutNSig¶: Number of sigma for automatic computation of (low) photometric cut. Cut is based on exposure gray width (per band), unless useRepeatabilityForExpGrayCuts is set, in which case the star repeatability is used (also per band). (float, default 3.0)

bands¶: Bands to run calibration (List, default [])

brightObsGrayMax¶: Maximum gray extinction to be considered bright observation (float, default 0.15)

ccdGrayMaxStarErr¶: Maximum error on a star observation to use in ccd gray (achromatic residual) computation (float, default 0.1)

ccdGraySubCcd¶: Compute CCD gray terms on sub-ccd scale Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use ccdGraySubCcdDict instead. (bool, default False)

ccdGraySubCcdChebyshevOrder¶: Order of the 2D chebyshev polynomials for sub-ccd gray fit. (int, default 1)

ccdGraySubCcdDict¶: Per-band specification on whether to compute achromatic per-ccd residual (‘ccd gray’) on a sub-ccd scale. (Dict, default {})

ccdGraySubCcdTriangular¶: Should the sub-ccd gray chebyshev matrix be triangular to suppress high-order cross terms? (bool, default True)

coatingMjds¶: Mirror coating dates in MJD (List, default (0.0,))

colorSplitBands¶: Band names to use to split stars by color. Must have 2 entries. (List, default ('g', 'i'))

colorSplitIndices¶: Band indices to use to split stars by color Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use colorSplitBands instead. (List, default None)

cycleNumber¶: FGCM fit cycle number. This is automatically incremented after each run and stage of outlier rejection. See cookbook for details. (int)

doReferenceCalibration¶: Use reference catalog as additional constraint on calibration (bool, default True)

epochMjds¶: Epoch boundaries in MJD (List, default (0.0,))

expGrayErrRecoverCut¶: Maximum exposure gray error to be able to recover bad ccds via interpolation. Visits with more gray variance will only get CCD zeropoints if there are sufficient star observations (minStarPerCcd) on that CCD. (float, default 0.05)

expGrayHighCut¶: Maximum (positive) exposure gray for a visit to be considered photometric. Must be same length as config.bands, and matched band-by-band. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use expGrayHighCutDict instead. (List, default (0.0,))

expGrayHighCutDict¶: Per-band specification on maximum (positive) achromatic exposure residual (‘gray term’) for a visit to be considered photometric. Must have one entry per band. Broad-band filters should be 0.2. (Dict, default {})

expGrayInitialCut¶: Maximum exposure/visit gray value for initial selection of possible photometric observations. (float, default -0.25)

expGrayPhotometricCut¶: Maximum (negative) exposure gray for a visit to be considered photometric. Must be same length as config.bands, and matched band-by-band. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use expGrayPhotometricCutDict instead. (List, default (0.0,))

expGrayPhotometricCutDict¶: Per-band specification on maximum (negative) achromatic exposure residual (‘gray term’) for a visit to be considered photometric. Must have one entry per band. Broad-band filters should be -0.05. (Dict, default {})

expGrayRecoverCut¶: Maximum (negative) exposure gray to be able to recover bad ccds via interpolation. Visits with more gray extinction will only get CCD zeropoints if there are sufficient star observations (minStarPerCcd) on that CCD. (float, default -1.0)

expVarGrayPhotometricCut¶: Maximum exposure variance to be considered possibly photometric Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use expVarGrayPhotometricCutDict instead. (float, default 0.0005)

expVarGrayPhotometricCutDict¶: Per-band specification on maximum exposure variance to be considered possibly photometric. Must have one entry per band. Broad-band filters should be 0.0005. (Dict, default {})

filterMap¶: Mapping from ‘filterName’ to band. (Dict, default {})

fitBands¶: Bands to use in atmospheric fit. The bands not listed here will have the atmosphere constrained from the ‘fitBands’ on the same night. Must be a subset of config.bands (List, default [])

fitFlag¶: Flag for which bands are directly constrained in the FGCM fit. Bands set to 0 will have the atmosphere constrained from observations in other bands on the same night. Must be same length as config.bands, and matched band-by-band. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use fitBands instead. (List, default (0,))

fitMirrorChromaticity¶: Fit (intraband) mirror chromatic term? (bool, default False)

freezeStdAtmosphere¶: Freeze atmosphere parameters to standard (for testing) (bool, default False)

history¶

instrumentParsPerBand¶: Model instrumental parameters per band? Otherwise, instrumental parameters (QE changes with time) are shared among all bands. (bool, default False)

instrumentSlopeMinDeltaT¶: Minimum time change (in days) between observations to use in constraining instrument slope. (float, default 20.0)

isFinalCycle¶: Is this the final cycle of the fitting? Will automatically compute final selection of stars and photometric exposures, and will output zeropoints and standard stars for use in fgcmOutputProducts (bool, default False)

latitude¶: Observatory latitude (float)

mapLongitudeRef¶: Reference longitude for plotting maps (float, default 0.0)

mapNSide¶: Healpix nside for plotting maps (int, default 256)

maxCcdGrayErr¶: Maximum error on CCD gray offset to be considered photometric (float, default 0.05)

maxIterBeforeFinalCycle¶: Maximum fit iterations, prior to final cycle. The number of iterations will always be 0 in the final cycle for cleanup and final selection. (int, default 50)

minCcdPerExp¶: Minimum number of good CCDs per exposure/visit to be used in calibration fit. Visits with fewer good CCDs will have CCD zeropoints estimated where possible. (int, default 5)

minExpPerNight¶: Minimum number of good exposures/visits to consider a partly photometric night (int, default 10)

minObsPerBand¶: Minimum good observations per band (int, default 2)

minStarPerCcd¶: Minimum number of good stars per CCD to be used in calibration fit. CCDs with fewer stars will have their calibration estimated from other CCDs in the same visit, with zeropoint error increased accordingly. (int, default 5)

minStarPerExp¶: Minimum number of good stars per exposure/visit to be used in calibration fit. Visits with fewer good stars will have CCD zeropoints estimated where possible. (int, default 600)

modelMagErrors¶: Should FGCM model the magnitude errors from sky/fwhm? (False means trust inputs) (bool, default True)

nCore¶: Number of cores to use (int, default 4)

nExpPerRun¶: Number of exposures to run in each chunk (int, default 1000)

nStarPerRun¶: Number of stars to run in each chunk (int, default 200000)

outfileBase¶: Filename start for plot output files (str)

outputStandardsBeforeFinalCycle¶: Output standard stars prior to final cycle? Used in debugging. (bool, default False)

outputZeropointsBeforeFinalCycle¶: Output standard stars prior to final cycle? Used in debugging. (bool, default False)

precomputeSuperStarInitialCycle¶: Precompute superstar flat for initial cycle (bool, default False)

quietMode¶: Be less verbose with logging. (bool, default False)

refStarOutlierNSig¶: Number of sigma compared to average mag for reference star to be considered an outlier. Computed per-band, and if it is an outlier in any band it is rejected from fits. (float, default 4.0)

refStarSnMin¶: Reference star signal-to-noise minimum to use in calibration. Set to <=0 for no cut. (float, default 50.0)

requiredBands¶: Bands that are required for a star to be considered a calibration star. Must be a subset of config.bands (List, default [])

requiredFlag¶: Flag for which bands are required for a star to be considered a calibration star in the FGCM fit. Typically this should be the same as fitFlag. Must be same length as config.bands, and matched band-by-band. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use requiredBands instead. (List, default (0,))

reserveFraction¶: Fraction of stars to reserve for testing (float, default 0.1)

sedFudgeFactors¶: Fudge factors for computing linear SED from colors. Must be same length as config.bands, and matched band-by-band. Deprecated: This field has been deprecated and will be removed after v20. Please use sedSlopeTermMap and sedSlopeMap. (List, default (0,))

sedboundaryterms¶: Mapping from bands to SED boundary term names used is sedterms. (SedboundarytermDict, default <class 'lsst.fgcmcal.sedterms.SedboundarytermDict'>)

sedterms¶: Mapping from terms to bands for fgcm linear SED approximations. (SedtermDict, default <class 'lsst.fgcmcal.sedterms.SedtermDict'>)

sigFgcmMaxEGray¶: Maximum (absolute) gray value for observation in sigma_FGCM. May be 1 element (same for all bands) or the same length as config.bands. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use sigFgcmMaxEGrayDict instead. (List, default (0.05,))

sigFgcmMaxEGrayDict¶: Per-band specification for maximum (absolute) achromatic residual (gray value) for observations in sigma_fgcm (raw repeatability). Broad-band filters should be 0.05. (Dict, default {})

sigFgcmMaxErr¶: Maximum mag error for fitting sigma_FGCM (float, default 0.01)

sigma0Phot¶: Systematic error floor for all zeropoints (float, default 0.003)

sigmaCalFitPercentile¶: Magnitude percentile range to fit systematic error floor (List, default (0.05, 0.15))

sigmaCalPlotPercentile¶: Magnitude percentile range to plot systematic error floor (List, default (0.05, 0.95))

sigmaCalRange¶: Allowed range for systematic error floor estimation (List, default (0.001, 0.003))

starColorCuts¶: Encoded star-color cuts (to be cleaned up) (List, default ('NO_DATA',))

superStarSigmaClip¶: Number of sigma to clip outliers when selecting for superstar flats (float, default 5.0)

superStarSubCcd¶: Compute superstar flat on sub-ccd scale Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use superStarSubCcdDict instead. (bool, default True)

superStarSubCcdChebyshevOrder¶: Order of the 2D chebyshev polynomials for sub-ccd superstar fit. Global default is first-order polynomials, and should be overridden on a camera-by-camera basis depending on the ISR. (int, default 1)

superStarSubCcdDict¶: Per-band specification on whether to compute superstar flat on sub-ccd scale. Must have one entry per band. (Dict, default {})

superStarSubCcdTriangular¶: Should the sub-ccd superstar chebyshev matrix be triangular to suppress high-order cross terms? (bool, default False)

useQuadraticPwv¶: Model PWV with a quadratic term for variation through the night? (bool, default False)

useRepeatabilityForExpGrayCuts¶: Use star repeatability (instead of exposures) for computing photometric cuts? Recommended for tract mode or bands with few exposures. May be 1 element (same for all bands) or the same length as config.bands. Deprecated: This field is no longer used, and has been deprecated by DM-23699. It will be removed after v20. Use useRepeatabilityForExpGrayCutsDict instead. (List, default (False,))

useRepeatabilityForExpGrayCutsDict¶: Per-band specification on whether to use star repeatability (instead of exposures) for computing photometric cuts. Recommended for tract mode or bands with few visits. (Dict, default {})

utBoundary¶: Boundary (in UTC) from day-to-day (float)

washMjds¶: Mirror wash MJDs (List, default (0.0,))

Methods Documentation

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

Compare this configuration to another Config for equality.

Parameters:

other : lsst.pex.config.Config: Other Config object to compare against this config.
shortcut : bool, optional: If True, return as soon as an inequality is found. Default is True.
rtol : float, optional: Relative tolerance for floating point comparisons.
atol : float, optional: Absolute tolerance for floating point comparisons.
output : callable, optional: A callable that takes a string, used (possibly repeatedly) to report inequalities.

Returns:

isEqual : bool: 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:	name : `str` Name of a `Field` in this config. kwargs Keyword arguments passed to `lsst.pex.config.history.format`.
Returns:	history : `str` 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:	items : `list` List of tuples for each configuration. Tuple items are: Field name. Field value.

See also

lsst.pex.config.Config.iteritems

iteritems()¶

Iterate over (field name, field value) pairs.

Yields:	item : `tuple` Tuple items are: Field name. Field value.

See also

lsst.pex.config.Config.items

iterkeys()¶

Iterate over field names

Yields:	key : `str` A field’s key (attribute name).

See also

lsst.pex.config.Config.values

itervalues()¶

Iterate over field values.

Yields:	value : obj A field value.

See also

lsst.pex.config.Config.values

keys()¶

Get field names.

Returns:	names : `list` 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:

filename : str

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

root : str, 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.

Deprecated: For backwards compatibility, older config files that use root="root" instead of root="config" will be loaded with a warning printed to sys.stderr. This feature will be removed at some point.

See also

lsst.pex.config.Config.loadFromStream, lsst.pex.config.Config.save, lsst.pex.config.Config.saveFromStream

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

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

Parameters:

stream : file-like object, str, or compiled string

Stream containing configuration override code.

root : str, 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.

Deprecated: For backwards compatibility, older config files that use root="root" instead of root="config" will be loaded with a warning printed to sys.stderr. This feature will be removed at some point.

filename : str, 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.save, lsst.pex.config.Config.saveFromStream

names()¶

Get all the field names in the config, recursively.

Returns:	names : `list` of `str` Field names.

save(filename, root='config')¶

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

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

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

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

Parameters:

outfile : file-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).
skipImports : bool, 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.

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:	values : `list` List of field values.

See also

lsst.pex.config.Config.itervalues

Navigation

FgcmFitCycleConfig¶