$ cd$DIFXROOT/.. $ mkdir difx-build $ cd difx-build $ mkdir pkgconfig $ cd pkgconfig $ $DIFXROOT/../difx-svn/setup/genipppc $IPPROOT $ cd ..
If you have previously been building in the SVN directory, you will need to remove some configuration files (e.g.config.status) left over from your last install with 如果你以前在源码目录中构建过，你需要删除一些配置文件（例如 config.status）：
It assumed that SWIN format visibility file(s) to be converted live in directory <baseFilename>.difx/ It is also assumed that at least 3 additional files exist: <baseFilename>.input DiFX input file <baseFilename>.calc Base file for calcif <baseFilename>.im Polynomial UVW and model One other files is optionally read: <baseFilename>.flag Antenna-based flagging
VLBA calibration transfer will produce 4 files: flag, tsys, pcal, weather If these are present in the current directory, they will be used to form the FL, TS, PH and WR tables
If env variable GAIN_CURVE_PATH is set, gain curves will be looked for and turned into a GN table
The output file <outfile> will be written in FITS-IDI format nearly identical to that made at the VLBA HW correlator. The first two optional files are required for full model accountability.
options can include: --help -h Print this help message
--bin <bin> -B <bin> Select on this pulsar bin number
--difx -d Run on all .difx files in directory
--no-model -n Don't write model (ML) table --dont-combine -1 Don't combine jobs
--scale <scale> -s <scale> Scale visibility data by <scale>
--deltat <deltat> -t <deltat> Set interval (sec) in printing job matrix (default 20.0)
--difx-tsys-interval -i <interval> Set the Difx-derived tsys interval (sec) (default 30.0)
--difx-pcal-interval <interval> Set the Difx-derived pcal interval (sec) (default 30.0), 0 means to average over a whole scan
--phaseCentre <p> --phasecenter <p> Create a fits file for all the <p>th phase centres (default 0)
--keep-order -k Keep antenna order
--ac-always -a Write standard autocorrelations into every output file
--profilemode Don't discard autocorrelations for pulsar bins other than bin 0 --skip-extra-autocorrs Ignore e.g. LL autocorrs in a job with only RR cross-corrs --history <file> -H <file> Read file <file> and populate FITS History --sniff-all -S Sniff all bins and centers --dont-sniff -x Don't produce sniffer output
--sniff-time <t> -T <t> Sniff output on a <t> second timescale (default 30.0) Set to zero to disable sniffing
--union -u Form union of frequency setups
--max-jobs <max> -m <max> Set maximum number of jobs to merge into one FITS file to <max>
--eop-merge-mode Set the mode for merging differerent EOPs. Legal modes are strict (default), drop, relaxed.
--clock-merge-mode Set the mode for merging clock entries of an antenna. Legal modes are strict (default), drop (ignore clock breaks).
--verbose -v Be verbose. -v -v for more!
--override-version Ignore difx versions
--zero -0 Don't put visibility data in FITS file --antpol Use antenna-based polarization codes. Warning: fits-idi file will violate original specifcaitions and abide extended specifications. --polxy2hv Convert XY polarziation codes to HV codes. Requires --antpol option --localdir -l *.calc, *.im, and *.difx are sought in the same directory as *.input files --all-pcal-tones -A Extract all phase calibration tones --primary-band <pb> Add PRIBAND keyword with value <pb> to FITS file --relabelCircular Change naming of all polarizations to R/L --vanVleck Force difx2fits to apply van Vleck correction --bandpass Write baseline-based bandpass to .bandpass file --applybandpass <file> Read <file> and apply it as a bandpass to the output --applydelaycal <file> Read <file> and apply it as delay corrections to the output --sourcelist <list> Only propagate source(s) listed (comma separated) difx2fits responds to the following environment variables: DIFX_GROUP_ID If set, run with umask(2). DIFX_VERSION The DiFX version to report. DIFX_LABEL Your local DiFX version label. GAIN_CURVE_PATH Path where gain curves can be found. TCAL_PATH Path where switched power T_cal values are found. TCAL_FILE Path to single specific T_cal file. DIFX_MAX_SNIFFER_MEMORY Max number of bytes to allow for sniffing. DIFX2FITS_UVFITS_DUMP Prints in stdout the ascii dump of records from the binary visilibity file. Warning: the output may be huge. DIFX2FITS_UVFITS_DUMP_UTCMIN Sets the minimum UTC time tag for the visibility dump. Units are seconds. Default is zero. DIFX2FITS_UVFITS_DUMP_UTCMAX Sets the maximum UTC time tag for the visibility dump. Units are seconds. Default is 86400. DIFX_USE_CABLE_CAL If 0, then cable calibration files are ignored. Default is 1. PLEASE file all bug reports at http://svn.atnf.csiro.au/trac/difx . Include at a minimum the output of difx2fits with extra verbosity (that is with -v -v). The .input, .im & .calc files may help too.