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### 4.7 Calculation Functions

The various functions from the expression language listed in Section 10.7 are available directly from JyStilts. Each of the subsections in that section is a class in the `stilts` module namespace, with unbound functions representing the functions.

This means you can use them like this:

        >>> import stilts
        >>> print stilts.Times.mjdToIso(54292)
        2007-07-11T00:00:00

or like this:

        >>> from stilts import CoordsDegrees
        >>> dist = CoordsDegrees.skyDistanceDegrees(ra1, dec1, ra2, dec2)

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STILTS - Starlink Tables Infrastructure Library Tool Set
Starlink User Note256
STILTS web page: http://www.starlink.ac.uk/stilts/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk