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NRAO Home > CASA > CASA Toolkit Reference Manual |
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sd.selector.set_polarisations - Function
5.1.3 Set a sequence of polarization numbers or strings
Description
Set the polarisations to be selected in the scantable. It allows to set
polarization selection via integer or string (e.g. ”XX”, ”Q”). Integer must be
within the range of 0 to 3 since the number outside this range will result no
selected data exception. If the selection is specified by an integer, the selection
will refer polarization type of the original scantable. On the other hand, the
selection by string contains both type and component so that the selection will
refer its type, not the original scantable.
Arguments
Inputs |
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pols |
| A list of integers of 0-3, or strings, e.g [”I”,”Q”].
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| allowed: | integer, string, integer array, string array |
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| Default: | [] (no selection) |
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Example
# These are equivalent if data is ’linear’
sel.set_polarisations(["XX","Re(XY)"])
sel.set_polarisations([0,2])
# reset the polarisation selection
sel.set_polarisations()
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Copyright © 2016 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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