The iteration parameter

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3.3.2.3 The iteration parameter

There are currently four iteration options available: ’field’, ’antenna’, and ’baseline’. If one of these options is chosen, the data will be split into separate plot displays for each value of the iteration axis (e.g., for the VLA, the ’antenna’ option will get you 27 displays, one for each antenna).

An example use of iteration:

# choose channel averaging, every 5 channels
plotxy(’n5921.ms’,’channel’,subplot=221,iteration=’antenna’,width=’5’)

The results of this are shown in Figure 3.5. Note that this example combines the use of width, iteration and subplot.

Figure 3.5: The plotxy iteration plot. The first set of plots from the example in § 3.3.2.3 with iteration=’antenna’. Each time you press the Next button, you get the next series of plots.

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NOTE: If you use iteration=’antenna’ or ’baseline’, be aware if you have set antenna selection. You can also control whether you see auto-correlations or not using the appropriate syntax, e.g. antenna=’*&&*’ or antenna=’*&&&’ (§ 2.3.4.1).

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