[SciPy-dev] chararray docstrings
Mon Oct 12 13:05:08 CDT 2009
On Oct 12, 2009, at 1:09 PM, Ralf Gommers wrote:
> It would still be nice to have a slightly longer (tutorial-style)
> discussion somewhere in the docs. Or otherwise maybe a link to FITS
> docs that are illustrative? I still have a hard time understanding
> why operating on astronomical images with Python string methods is a
> good idea.
The short answer is that the FITS package deals with reading table
data as well (which is used for all sorts of things like sky target
lists or other catalog-like information). Such tables often have
fields with string content (e.g., target name). It is common to select
rows based on the content of these character fields. These tables can
have tens of thousands of rows so efficiency is an issue.
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