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NRAO Home > CASA > CASA Toolkit Reference Manual |
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imagepol.pol - Function
1.1.4 Polarized quantities
Description
This function just packages the other specific polarization functions into one
where you specify an operation with the argument which (can be useful for
scripts). This argument can take the values:
- ’lpi’ - linearly polarized intensity (function linpolint)
- ’tpi’ - total polarized intensity (function totpolint)
- ’lppa’ linearly polarized position angle (function linpolposang)
- ’flp’ - fractional linear polarization (function fraclinpol)
- ’ftp’ - fractional total polarized intensity (function fractotpol)
Arguments
Inputs |
| ||
which |
| Specify operation. One of ’lpi’, ’tpi’, ’lppa’, ’flp’, ’ftp’
(case insensitive)
| |
| allowed: | string |
|
| Default: |
| |
debias |
| Debias the polarized intensity ?
| |
| allowed: | bool | |
| Default: | false |
|
clip |
| Clip level for auto-sigma determination
| |
| allowed: | double |
|
| Default: | 10.0 |
|
sigma |
| Standard deviation of thermal noise. Default is auto
determined.
| |
| allowed: | double |
|
| Default: | -1 |
|
outfile |
| Output image file name. Default is unset.
| |
| allowed: | string |
|
| Default: |
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image
Example
"""
#
print "\t----\t pol Ex 1 \t----"
po.open(’stokes.image’)
lpi = po.pol(’lpi’)
lpi.statistics()
lpi.done()
#
"""
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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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