ConvertRefcatManager¶
- class lsst.meas.algorithms.ConvertRefcatManager(filenames, config, file_reader, indexer, schema, key_map, htmRange, addRefCatMetadata, log)¶
Bases:
object
Convert a reference catalog from external files into the LSST HTM sharded format, using a multiprocessing Pool to speed up the work.
- Parameters:
- filenames
dict
[int
,str
] The HTM pixel id and filenames to convert the catalog into.
- config
lsst.meas.algorithms.ConvertReferenceCatalogConfig
The Task configuration holding the field names.
- file_reader
lsst.pipe.base.Task
The file reader to use to load the files.
- indexer
lsst.meas.algorithms.HtmIndexer
The class used to compute the HTM pixel per coordinate.
- schema
lsst.afw.table.Schema
The schema of the output catalog.
- key_map
dict
[str
,lsst.afw.table.Key
] The mapping from output field names to keys in the Schema.
- htmRange
tuple
[int
] The start and end HTM pixel ids.
- addRefCatMetadatacallable
A function called to add extra metadata to each output Catalog.
- log
lsst.log.Log
orlogging.Logger
The log to send messages to.
- filenames
Methods Summary
computeCoord
(row, ra_name, dec_name)Create an ICRS coord.
getCatalog
(pixelId, schema, nNewElements)Get a catalog from disk or create it if it doesn't exist.
run
(inputFiles)Index a set of input files from a reference catalog, and write the output to the appropriate filenames, in parallel.
Methods Documentation
- static computeCoord(row, ra_name, dec_name)¶
Create an ICRS coord. from a row of a catalog being converted.
- Parameters:
- row
numpy.ndarray
Row from catalog being converted.
- ra_name
str
Name of RA key in catalog being converted.
- dec_name
str
Name of Dec key in catalog being converted.
- row
- Returns:
- coord
lsst.geom.SpherePoint
ICRS coordinate.
- coord
- getCatalog(pixelId, schema, nNewElements)¶
Get a catalog from disk or create it if it doesn’t exist.
- Parameters:
- pixelId
dict
Identifier for catalog to retrieve
- schema
lsst.afw.table.Schema
Schema to use in catalog creation it does not exist.
- nNewElements
int
The number of new elements that will be added to the catalog, so space can be preallocated.
- pixelId
- Returns:
- catalog
lsst.afw.table.SimpleCatalog
The new or read-and-resized catalog specified by
dataId
.
- catalog