NAME¶
fitsort - sort FITS header information from a list of files
SYNOPSIS¶
dfits <FITS files...> |
fitsort <FITS keywords...>
DESCRIPTION¶
fitsort extract keyword values from a set of FITS headers and outputs it
in an ASCII table format, which is compatible with most data processing
software packages. It shall only be used in combination with the
dfits
utility.
The ASCII output is shown in columns. Columns are aligned with blank characters
and also separated by tabulations. Blank alignment allows human readers to
visualize the output in a pretty format, tabulations are there for spreadsheet
compatibility. If you want to load out
fitsort output into any
spreadsheet, specify that fields shall be separated by tabulations and entries
separated by linefeeds.
Examples :
dfits *.fits |
fitsort BITPIX NAXIS NAXIS1 NAXIS2
The output would look like:
FILE BITPIX NAXIS NAXIS1 NAXIS2
file0001.fits 16 2 128 128
file0002.fits 32 2 512 512
...
ESO specific features in the FITS header are also supported. To get values for
'HIERARCH ESO' keywords, just give the complete names within double quotes.
e.g.
dfits *.fits |
fitsort "HIERARCH ESO INS LENS"
Another way of giving HIERARCH ESO keywords is to use the short FITS notation,
the above example can be given as:
dfits *.fits |
fitsort INS.LENS
Example: to retrieve the DPR keywords from an ESO FITS header, you would use:
dfits *.fits |
fitsort To be completed... DPR.CATG DPR.TYPE
DPR.TECH
This second way of requesting HIERARCH ESO keywords is not only shorter to type,
it also avoids typing quotes or double-quotes on the command-line, making it
easier to script with
fitsort.
Notice that the keywords you give on the command-line are case-insensitive. The
above line is equivalent to:
dfits *.fits |
fitsort dpr.catg dpr.type dpr.tech
OPTIONS¶
- -d
- Do not print out the first output line. This option is
useful to get only the query results, without the top line (giving all
column names). This makes it easy to script fitsort from programs
like awk or perl.
FILES¶
Input files to
dfits shall all comply with FITS format.
fitsort
also supports HIERARCH ESO FITS format.
SEE ALSO¶
dfits (1)