Daophot¶
-
class
astropy.io.ascii.
Daophot
[source] [edit on github]¶ Bases:
astropy.io.ascii.BaseReader
Read a DAOphot file. Example:
#K MERGERAD = INDEF scaleunit %-23.7g #K IRAF = NOAO/IRAFV2.10EXPORT version %-23s #K USER = davis name %-23s #K HOST = tucana computer %-23s # #N ID XCENTER YCENTER MAG MERR MSKY NITER \ #U ## pixels pixels magnitudes magnitudes counts ## \ #F %-9d %-10.3f %-10.3f %-12.3f %-14.3f %-15.7g %-6d # #N SHARPNESS CHI PIER PERROR \ #U ## ## ## perrors \ #F %-23.3f %-12.3f %-6d %-13s # 14 138.538 INDEF 15.461 0.003 34.85955 4 \ -0.032 0.802 0 No_error
The keywords defined in the #K records are available via the output table
meta
attribute:>>> import os >>> from astropy.io import ascii >>> filename = os.path.join(ascii.__path__[0], 'tests/t/daophot.dat') >>> data = ascii.read(filename) >>> for name, keyword in data.meta['keywords'].items(): ... print(name, keyword['value'], keyword['units'], keyword['format']) ... MERGERAD INDEF scaleunit %-23.7g IRAF NOAO/IRAFV2.10EXPORT version %-23s USER name %-23s ...
The unit and formats are available in the output table columns:
>>> for colname in data.colnames: ... col = data[colname] ... print(colname, col.unit, col.format) ... ID None %-9d XCENTER pixels %-10.3f YCENTER pixels %-10.3f ...
Any column values of INDEF are interpreted as a missing value and will be masked out in the resultant table.
In case of multi-aperture daophot files containing repeated entries for the last row of fields, extra unique column names will be created by suffixing corresponding field names with numbers starting from 2 to N (where N is the total number of apertures). For example, first aperture radius will be RAPERT and corresponding magnitude will be MAG, second aperture radius will be RAPERT2 and corresponding magnitude will be MAG2, third aperture radius will be RAPERT3 and corresponding magnitude will be MAG3, and so on.
Attributes Summary
table_width
Methods Summary
write
([table])Write table
as list of strings.Attributes Documentation
-
table_width
= 80¶
Methods Documentation
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write
(table=None)[source] [edit on github]¶ Write
table
as list of strings.Parameters: - table :
Table
Input table data.
Returns: - lines : list
List of strings corresponding to ASCII table
- table :
-