FITSIO Home
[ binary && mag <= 5.0] - Extract all binary stars brighter
than fifth magnitude (note that
the initial space is necessary to
prevent it from being treated as a
binning specification)
[#row >= 125 && #row <= 175] - Extract row numbers 125 through 175
[IMAGE[4,5] .gt. 100] - Extract all rows that have the
(4,5) component of the IMAGE column
greater than 100
[abs(sin(theta * #deg)) < 0.5] - Extract all rows having the
absolute value of the sine of theta
less than a half where the angles
are tabulated in degrees
[SUM( SPEC > 3*BACKGRND )>=1] - Extract all rows containing a
spectrum, held in vector column
SPEC, with at least one value 3
times greater than the background
level held in a keyword, BACKGRND
[VCOL=={1,4,2}] - Extract all rows whose vector column
VCOL contains the 3-elements 1, 4, and
2.
[@rowFilter.txt] - Extract rows using the expression
contained within the text file
rowFilter.txt
[gtifilter()] - Search the current file for a GTI
extension, filter the TIME
column in the current table, using
START/STOP times taken from
columns in the GTI extension
[regfilter("pow.reg")] - Extract rows which have a coordinate
(as given in the X and Y columns)
within the spatial region specified
in the pow.reg region file.
[regfilter("pow.reg", Xs, Ys)] - Same as above, except that the
Xs and Ys columns will be used to
determine the coordinate of each
row in the table.