Setting Up UVWRITE -- UVSET

  
Table 2.3: Arguments to UVSET, for STATUS=NEW

object='corr'

The uv routines allow the correlation data to be stored on disk, either as floating point numbers, or as 16 bit integers with an associated scale factor. The 16 bit format roughly halves the disk space required, but slows the read and write operation, and can cause precision problems. On the first call to uvwrite, the uv routines decide on the format to use, using a simple rule. The uvset call can be used to override this rule. To be of use, it must be called before the first call to uvwrite. The type argument is a single character, being `r' or `j', which instructs floating point or scaled integers, respectively, to be used.

object='data'

This conrtols whether UVWRITE writes the data to the corr or wcorr variable. The default is to write it to the corr item (i.e. it assumes that the data is spectral, rather than continuum data).