Lists

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8.1.3 Lists

For lists of scans or IFs, such as in scanlist and iflist in the SDtasks, the tasks and functions require a comma-delimited Python list, e.g.,

scanlist = [241, 242, 243, 244, 245, 246]

The python range function can be used to generate a list of consecutive numbers, e.g.,

scanlist = range(241,247)

giving the same list as above,

CASA <3>: scanlist=range(241,247)
CASA <4>: print scanlist
[241, 242, 243, 244, 245, 246]

Multiple ranges can be created by summing lists,

CASA <5>: scanlist=range(241,247) + range(251,255)
CASA <6>: print scanlist
[241, 242, 243, 244, 245, 246, 251, 252, 253, 254]

Note that in the future, the sd tools and SDtasks will use the same selection language as in the interferometric synthesis part of the CASA.

Spectral regions, such as those for setting masks, are pairs of min and max values for whatever spectral axis unit is currently chosen. These are fed into the tasks and tools as a list of lists, where each list element is a list with the [min,max] for that sub-region, e.g.,

masklist=[[1000,3000], [5000,7000]]

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