.TH writems "1" "2017-11-01" "casacore"
.SH NAME
writems \- Create one or more MeasurementSets
.SH SYNOPSIS
\fBwritems\fR \fPparm=\fIvalue\fR ...
.SH Parameters
.TP
\fBnms\fR
Number of MeasurementSets to create (0 means 1 MS without suffix;
default, >0 also creates MultiMS)
.TP
\fBmsname\fR
Name of the output MeasurementSet (suffix _p<i> is added if nms>0)
.TP
\fBra\fR
One or more J2000 Right Ascensions (as hh:mm:ss.sss); defines the fields
.TP
\fBdec\fR
One or more J2000 Declinations (as dd.mm.ss.sss); defines the fields
.TP
\fBanttab\fR
Name of the ANTENNA table giving the antenna parameters to use
(zero/empty values if not given)
.TP
\fBstartfreq\fR
Start frequency (Hz) per spw (1 value counts on for other spws;
default: 1e9)
.TP
\fBchanwidth\fR
Channel frequency width (Hz) per spw (1 value applies to all spws;
default: 1e6)
.TP
\fBstarttime\fR
Start time (e.g., 23Mar2016/12:00:00)
.TP
\fBtimestep\fR
Time interval (sec; default: 1)
.TP
\fBntime\fR
Number of time steps (default: 1)
\fBntimefield\fR
Number of time steps per field (0=all fields for all times; default)
.TP
\fBnspw\fR
Number of spectral windows (default: 1)
.TP
\fBnpol\fR
Number of polarizations per spectral window; 1 value applies to all
spws (default: 4)
.TP
\fBnchan\fR
Number of channels per spectral window; 1 value applies to all spws
(default: 256)
.TP
\fBnant\fR
Number of antennae to use; it anttab is given maximum to use is its
size (default: 0)
.TP
\fBcalcuvw\fR
Calculate UVW coordinates? (default: false)
.TP
\fBautocorr\fR
Write autocorrelations? (default: true)
.TP
\fBweightspectrum\fR
Write WEIGHT_SPECTRUM column? (default: false)
.TP
\fBimagercolumns\fR
Write imager columns (MODEL_DATA, CORRECTED_DATA)? (default: false)
.TP
\fBrowwise\fR
Write the data row wise (thus a put per row) (default: true)
.TP
\fBnflagbits\fR
int\fR
Write multiple flag bits (0, 8, 16 or 32) mapped to FLAG (default: 0)
.TP
\fBflagcolumn\fR
Name of the FlagBits column if nflagbits>0 (default: "FLAG_BITS")
.TP
\fBtilesize\fR
Size of data tiles (KBytes); default is 1024 
.TP
\fBtilesizefreq\fR
Number of channels in data tiles; default is all channels
.TP
\fBmultifile\fR
Use the MultiFile feature? (default: false)
.TP
\fBmultihdf5\fR
Use the MultiHDF5 feature? (default: false)
.TP
\fBmfsize\fR
MultiFile/HDF5 block size (KBytes); default is tilesize
.TP
\fBashdf5\fR
bool\fR
Write the data in HDF5 format (default: false)