NAME¶

writems - Create one or more MeasurementSets

SYNOPSIS¶

writems parm=value ...

Parameters¶

nms

Number of MeasurementSets to create (0 means 1 MS without suffix; default, >0 also creates MultiMS)

msname

Name of the output MeasurementSet (suffix _p<i> is added if nms>0)

ra

One or more J2000 Right Ascensions (as hh:mm:ss.sss); defines the fields

dec

One or more J2000 Declinations (as dd.mm.ss.sss); defines the fields

anttab

Name of the ANTENNA table giving the antenna parameters to use (zero/empty values if not given)

startfreq

Start frequency (Hz) per spw (1 value counts on for other spws; default: 1e9)

chanwidth

Channel frequency width (Hz) per spw (1 value applies to all spws; default: 1e6)

starttime

Start time (e.g., 23Mar2016/12:00:00)

timestep

Time interval (sec; default: 1)

ntime

Number of time steps (default: 1) ntimefield Number of time steps per field (0=all fields for all times; default)

nspw

Number of spectral windows (default: 1)

npol

Number of polarizations per spectral window; 1 value applies to all spws (default: 4)

nchan

Number of channels per spectral window; 1 value applies to all spws (default: 256)

nant

Number of antennae to use; it anttab is given maximum to use is its size (default: 0)

calcuvw

Calculate UVW coordinates? (default: false)

autocorr

Write autocorrelations? (default: true)

weightspectrum

Write WEIGHT_SPECTRUM column? (default: false)

imagercolumns

Write imager columns (MODEL_DATA, CORRECTED_DATA)? (default: false)

rowwise

Write the data row wise (thus a put per row) (default: true)

nflagbits

int Write multiple flag bits (0, 8, 16 or 32) mapped to FLAG (default: 0)

flagcolumn

Name of the FlagBits column if nflagbits>0 (default: "FLAG_BITS")

tilesize

Size of data tiles (KBytes); default is 1024

tilesizefreq

Number of channels in data tiles; default is all channels

multifile

Use the MultiFile feature? (default: false)

multihdf5

Use the MultiHDF5 feature? (default: false)

mfsize

MultiFile/HDF5 block size (KBytes); default is tilesize

ashdf5

bool Write the data in HDF5 format (default: false)