19.8 MODEL

[CALIBRATE\]MODEL [Arg1 [... ArgN] [/MINVAL Value [Unit]] [/MODE CCT|IMAGE|UV_FIT|SELF [Frequency]]

This command creates model visibilities from Clean components, images or UV_FIT results from the last UV_FIT command, depending on the /MODE option. If the option is not present, the default mode is CCT or UV_FIT, depending whether CLEAN (or its specialized versions HOGBOM, CLARK, etc...) or UV_FIT was done last.

The current UV data is used to define the visibility sampling and data weights. It should have only one channel, or the same number of channels as the specified model.

The resulting UV data is available in SIC structure UV_MODEL. It can be written using WRITE UV_MODEL, or selected for further use using command UV_SELECT. MODEL and UV_RESIDUAL are complementary commands (UV_DATA = UV_MODEL + UV_RESIDUAL).

For the Clean component (CCT) mode, the syntax is [CALIBRATE\]MODEL [MaxIter] [/MINVAL Value [Unit]] [/MODE CCT [Frequency]]
It computes visibilities on the current UV sampling using a source model made of the MaxIter first Clean Components, or of all pixel values above the given Value if /MINVAL is present.

For the IMAGE mode, the syntax is [CALIBRATE\]MODEL [ImageName] [/MINVAL Value [Unit]] [/MODE IMAGE]
If ImageName is not specified, the CLEAN image is used instead.

For the UV_FIT results, the syntax is [CALIBRATE\]MODEL [F1 .. Fn] [/MODE UV_FIT]
which computes a model using the F1, ..., Fn fitted functions (default all) for the current UV sampling.

UV_MODEL can also be selected by using command UV_SELECT for further imaging by UV_MAP (and thus UV_RESTORE) or display by SHOW UV.