|
 WherePosition encapsulates all positional constraints. Current Saada release only supports cone search.
Positional constraints are expressed by the operator isInCircle("position/name",size, coord equinox, coord syst).
- The size is expressed in arcminutes.
- Latitudes and longitudes must be expressed in the current coordinates system. Both decimal and HMS formats are recognized.
- Supported coordinate systems are J2000/1950, FK4/5
Multiple Target search is supported. WherePosition statement can contain as much isInCircle operators as needed.
example :
WherePosition{ isInCircle("M33", 0.16, J2000, FK5)
, isInCircle("12:23:56.5 -1:2;3.5", 0.2, J2000, FK5)
, isInCircle("1.234 +23.5433", 0.23, J2000 FK5)
}
last update 2007-03-03
|
The WherePosition clause
RSS 2.0