Source Extractor Wrapper for Python¶
The tiny sewpy module lets you run SExtractor as if it would all be native python...
import sewpy
sew = sewpy.SEW(params=["X_IMAGE", "Y_IMAGE", "FLUX_RADIUS(3)", "FLAGS"],
config={"DETECT_MINAREA":10, "PHOT_FLUXFRAC":"0.3, 0.5, 0.8"})
out = sew("myimage.fits")
print out["table"] # this is an astropy table.
... but also allows for a more sophisticated use, for instance if you want to use existing SExtractor input files.
Why yet another SExtractor wrapper ? Because we needed one that:
- is based on astropy (in particular
astropy.table), - works with both python 2 and 3,
- uses standard
logging(and also logs SExtractor’s stdout & stderr to file), - uses
tempfileto hide all input and output files, except if you want to see them - has some convenience functionality to use SExtractor’s
ASSOCprocess (give me an input catalog, and I append columns with SExtractor measurements to it).
The demos in the examples directory can be run without installing sewpy, and provide a quick overview.
Your are viewing the documentation of sewpy. The code, including the sources of the present documentation, is hosted on github.com/megalut/sewpy.