lsst.meas.algorithms.readTextCatalogTask.ReadTextCatalogTask Class Reference

Inheritance diagram for lsst.meas.algorithms.readTextCatalogTask.ReadTextCatalogTask:

Public Member Functions
	run (self, filename)

Static Public Attributes
	ConfigClass = ReadTextCatalogConfig

Static Protected Attributes
str	_DefaultName = 'readCatalog'

Detailed Description

Read an object catalog from a text file

Definition at line 76 of file readTextCatalogTask.py.

Member Function Documentation

run()

lsst.meas.algorithms.readTextCatalogTask.ReadTextCatalogTask.run	(		self,
			filename )

Read an object catalog from the specified text file

Parameters
----------
filename : `string`
    Path to specified text file

Returns
-------
A numpy structured array containing the specified columns

Definition at line 82 of file readTextCatalogTask.py.

    def run(self, filename):
        """Read an object catalog from the specified text file
 
        Parameters
        ----------
        filename : `string`
            Path to specified text file
 
        Returns
        -------
        A numpy structured array containing the specified columns
        """
        kwargs = {}
        if self.config.colnames:
            # Wrap in list() to avoid transferring a pex_config proxy object.
            kwargs['names'] = list(self.config.colnames)
            # if we specify the column names, then we need to just ignore the header lines.
            kwargs['data_start'] = self.config.header_lines
        else:
            # if we don't specify column names, start the header at this line.
            kwargs['header_start'] = self.config.header_lines
 
        if self.config.fill_values:
            kwargs['fill_values'] = [list(self.config.fill_values)]
 
        table = Table.read(filename, format=self.config.format,
                           delimiter=self.config.delimiter,
                           **kwargs)
 
        # convert to a numpy array for backwards compatibility with other readers
        arr = np.array(table.as_array())
 
        if self.config.replace_missing_floats_with_nan:
            for column in table.columns:
                if (table.dtype[column] == np.float32) or (table.dtype[column] == np.float64):
                    arr[column][table.mask[column]] = np.nan
 
        return arr

Member Data Documentation

_DefaultName

str lsst.meas.algorithms.readTextCatalogTask.ReadTextCatalogTask._DefaultName = 'readCatalog'

staticprotected

Definition at line 79 of file readTextCatalogTask.py.

ConfigClass

lsst.meas.algorithms.readTextCatalogTask.ReadTextCatalogTask.ConfigClass = ReadTextCatalogConfig

static

Definition at line 80 of file readTextCatalogTask.py.

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The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-8.0.0/Linux64/meas_algorithms/ge6526c86ff+3a7c1ac5f1/python/lsst/meas/algorithms/readTextCatalogTask.py