Examples

1. This example defines two new columns (ra2000 and dec2000) and sets some existing columns to be displayed.

   ra2000{hmsrad(rah,ram,0.0)}radians{hours}; @
dec2000{dmsrad(decsign,decd,decm,0.0)}radians{degrees}; @
pk; v; v_limit; diam; radvel

2. This example shows the definition of a single column ( ra2000) being split across several lines.

   ra2000{hmsrad(rah,ram, @
0.0)}radi @
ans{hours};

3. This example is a complete catview script for computing and listing two new columns.

   open
PLN
setcmp
ra2000{hmsrad(rah,ram,0.0)}radians{hours}; @
dec2000{dmsrad(decsign,decd,decm,0.0)}radians{degrees};
list
exit

Exactly the same syntax applies when entering expressions to define selections.