filternum¶
-
pydl.photoop.sdssio.
filternum
(filt='foo')[source]¶ Return index number for SDSS filters either from a number or name.
Parameters: - filt :
str
The filter name.
Returns: - :class:`int`
The corresponding filter number
Raises: - :exc:`KeyError`
If
filt
is not a valid filter name.
Examples
>>> filternum('g') 1
- filt :