Synopsis
set_imaging_parms(nx, ny, cellx, celly, stokes, doshift, phasecenter, shiftx, shifty, mode, nchan, start, step, facets)
Description
Set the parameters to be used for imaging. These parameters are
passed to
(p)imager.setimage() by
make_image(). For
the most part, you don't have to call this function unless you want to
explicitly set some parameters; the correct thing will be done
otherwise.
Arguments
nx |
|
Number of pixels in the x direction. |
|
|
Allowed: |
Integer > 0 |
|
|
Default: |
Unset. (determined
by (p)imager.advise()) |
ny |
|
Number of pixels in the y direction. |
|
|
Allowed: |
Integer > 0 |
|
|
Default: |
Unset. (determined
by (p)imager.advise()) |
cellx |
|
Cell size in the x direction |
|
|
Allowed: |
Qunatity (angle) |
|
|
Default: |
Unset. (determined
by (p)imager.advise()) |
celly |
|
Cell size in the y direction |
|
|
Allowed: |
Qunatity (angle) |
|
|
Default: |
Unset. (determined
by (p)imager.advise()) |
stokes |
|
Stokes parameters to image |
|
|
Allowed: |
String: 'I'|'IV'|'IQU'|'IQUV' |
|
|
Default: |
Unset (will be set to
'I') |
doshift |
|
Use the specified phase center? |
|
|
Allowed: |
Boolean |
|
|
Default: |
Unset (will be set
according to if the test is for a single field or multiple fields |
phasecenter |
|
Direction of phase center as a measure |
|
|
Allowed: |
MDirection |
|
|
Default: |
Unset
(will be set if the the test is multi field) |
shiftx |
|
Shift in x |
|
|
Allowed: |
Quantity (angle) |
|
|
Default: |
'0arcsec' |
shifty |
|
Shift in y |
|
|
Allowed: |
Quantity (angle) |
|
|
Default: |
'0arcsec' |
mode |
|
Type of processing |
|
|
Allowed: |
String:
'mfs'|'channel'|'velocity' |
|
|
Default: |
'channel' |
nchan |
|
Number of channels |
|
|
Allowed: |
Integer > 0 |
|
|
Default: |
Unset (will use number of
channels in the simulated data set) |
start |
|
Starting channel |
|
|
Allowed: |
0 > Integer >= number of
channels in data set |
|
|
Default: |
1 |
step |
|
Step in channels |
|
|
Allowed: |
Integer > 0 |
|
|
Default: |
1 |
facets |
|
Number of facets on each axis |
|
|
Allowed: |
Integer > 0 |
|
|
Default: |
Unset (determined by
(p)imager.advise()) |