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Version 1.9 Build 1556 |
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Package | synthesis | |
Module | componentmodels | |
Tool | componentlist |
The sample function returns a vector containing the flux in Janskys/pixel
of all the components in the list, in the specified direction, at
the specified frequency. The returned vector always contains four
elements corresponding to the Stokes parameters I, Q, U, V.
Sample the flux of the list in a specified direction.
Synopsis
sample(direction, pixellatsize, pixellongsize, frequency)
Description
Arguments
direction
The direction to sample
Allowed:
any valid direction measure.
Default:
no default
pixellatsize
the x-size of the in pixels to use when sampling
Allowed:
any quantity that has angular units.
Default:
no default
pixellongsize
the y-size of the in pixels to use when sampling
Allowed:
any quantity that has angular units.
Default:
no default
frequency
The frequency to sample at
Allowed:
Any frequency measure
Default:
no default
Returns
A vector with four elements containing the flux in Janskys/pixel
in the I, Q, U, & V polarizations
Example
include 'componentlist.g'
include 'measures.g'
cl := componentlist('crux.cl', readonly=T);
dir := dm.direction('J2000', '12h26m35.9', '-63d5m56');
pixelsize := dm.quantity('1arcsec');
flux := cl.sample(dir, pixelsize);
In this example the componentlist is sampled at the position of
-Cru. The flux will be a vector with four elements.
Next: componentlist.rename - Function
Up: componentlist - Tool
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2006-10-15