Source
543
543
544
544
By default, it is calculated as the middle of the selected frequency range.
545
545
546
546
For deconvolver='mtmfs' the Taylor expansion is also done about
547
547
this specified reference frequency.
548
548
549
549
</description>
550
550
<value type="string"></value>
551
551
</param>
552
552
553
-
<param type="int" name="nchan" subparam="true">
553
+
<param type="int" name="nchan">
554
554
<shortdescription>Number of channels in the output image</shortdescription>
555
555
<description>Number of channels in the output image
556
556
For default (=-1), the number of channels will be automatically determined
557
557
based on data selected by 'spw' with 'start' and 'width'.
558
558
It is often easiest to leave nchan at the default value.
559
559
example: nchan=100
560
560
561
561
</description>
562
562
<value type="int">-1</value>
563
563
</param>
564
564
565
-
<param type="any" name="start" subparam="true">
565
+
<param type="any" name="start">
566
566
<shortdescription>First channel (e.g. start=3,start=\'1.1GHz\',start=\'15343km/s\')</shortdescription>
567
567
<description>First channel (e.g. start=3,start=\'1.1GHz\',start=\'15343km/s\')
568
568
of output cube images specified by data channel number (integer),
569
569
velocity (string with a unit), or frequency (string with a unit).
570
570
Default:''; The first channel is automatically determined based on
571
571
the 'spw' channel selection and 'width'.
572
572
When the channel number is used along with the channel selection
573
573
in 'spw' (e.g. spw='0:6~100'),
574
574
'start' channel number is RELATIVE (zero-based) to the selected
575
575
channels in 'spw'. So for the above example,
578
578
For specmode='cube', when velocity or frequency is used it is
579
579
interpreted with the frame defined in outframe. [The parameters of
580
580
the desired output cube can be estimated by using the 'transform'
581
581
functionality of 'plotms']
582
582
examples: start='5.0km/s'; 1st channel, 5.0km/s in outframe
583
583
start='22.3GHz'; 1st channel, 22.3GHz in outframe
584
584
</description>
585
585
<value type="string"></value>
586
586
</param>
587
587
588
-
<param type="any" name="width" subparam="true">
588
+
<param type="any" name="width">
589
589
<shortdescription>Channel width (e.g. width=2,width=\'0.1MHz\',width=\'10km/s\')</shortdescription>
590
590
<description>Channel width (e.g. width=2,width=\'0.1MHz\',width=\'10km/s\') of output cube images
591
591
specified by data channel number (integer), velocity (string with a unit), or
592
592
or frequency (string with a unit).
593
593
Default:''; data channel width
594
594
The sign of width defines the direction of the channels to be incremented.
595
595
For width specified in velocity or frequency with '-' in front gives image channels in
596
596
decreasing velocity or frequency, respectively.
597
597
For specmode='cube', when velocity or frequency is used it is interpreted with
598
598
the reference frame defined in outframe.
599
599
examples: width='2.0km/s'; results in channels with increasing velocity
600
600
width='-2.0km/s'; results in channels with decreasing velocity
601
601
width='40kHz'; results in channels with increasing frequency
602
602
width=-2; results in channels averaged of 2 data channels incremented from
603
603
high to low channel numbers
604
604
605
605
</description>
606
606
<value type="string"></value>
607
607
</param>
608
608
609
-
<param type="string" name="outframe" subparam="true">
609
+
<param type="string" name="outframe">
610
610
<shortdescription>Spectral reference frame in which to interpret \'start\' and \'width\'</shortdescription>
611
611
<description>Spectral reference frame in which to interpret \'start\' and \'width\'
612
612
Options: '','LSRK','LSRD','BARY','GEO','TOPO','GALACTO','LGROUP','CMB'
613
613
example: outframe='bary' for Barycentric frame
614
614
615
615
REST -- Rest frequency
616
616
LSRD -- Local Standard of Rest (J2000)
617
617
-- as the dynamical definition (IAU, [9,12,7] km/s in galactic coordinates)
618
618
LSRK -- LSR as a kinematical (radio) definition
619
619
-- 20.0 km/s in direction ra,dec = [270,+30] deg (B1900.0)
622
622
TOPO -- Topocentric
623
623
GALACTO -- Galacto centric (with rotation of 220 km/s in direction l,b = [90,0] deg.
624
624
LGROUP -- Local group velocity -- 308km/s towards l,b = [105,-7] deg (F. Ghigo)
625
625
CMB -- CMB velocity -- 369.5km/s towards l,b = [264.4, 48.4] deg (F. Ghigo)
626
626
DEFAULT = LSRK
627
627
628
628
</description>
629
629
<value type="string">LSRK</value>
630
630
</param>
631
631
632
-
<param type="string" name="veltype" subparam="true">
632
+
<param type="string" name="veltype">
633
633
<shortdescription>Velocity type (radio, z, ratio, beta, gamma, optical)</shortdescription>
634
634
<description>Velocity type (radio, z, ratio, beta, gamma, optical)
635
635
For start and/or width specified in velocity, specifies the velocity definition
636
636
Options: 'radio','optical','z','beta','gamma','optical'
637
637
NOTE: the viewer always defaults to displaying the 'radio' frame,
638
638
but that can be changed in the position tracking pull down.
639
639
640
640
The different types (with F = f/f0, the frequency ratio), are:
641
641
642
642
Z = (-1 + 1/F)
647
647
GAMMA = ((1 + F2)/2F) *
648
648
RELATIVISTIC == BETA (== v/c)
649
649
DEFAULT == RADIO
650
650
Note that the ones with an '*' have no real interpretation
651
651
(although the calculation will proceed) if given as a velocity.
652
652
653
653
</description>
654
654
<value type="string">radio</value>
655
655
</param>
656
656
657
-
<param type="any" name="restfreq" subparam="true">
657
+
<param type="any" name="restfreq">
658
658
<shortdescription>List of rest frequencies</shortdescription>
659
659
<description>List of rest frequencies or a rest frequency in a string.
660
660
Specify rest frequency to use for output image.
661
661
*Currently it uses the first rest frequency in the list for translation of
662
662
velocities. The list will be stored in the output images.
663
663
Default: []; look for the rest frequency stored in the MS, if not available,
664
664
use center frequency of the selected channels
665
665
examples: restfreq=['1.42GHz']
666
666
restfreq='1.42GHz'
667
667
676
676
<value type="string"></value>
677
677
</param>
678
678
-->
679
679
<!-- sub-param for 'cubesrc' disabled for now
680
680
<param type="string" name="sysvelframe" subparam="true">
681
681
<shortdescription>Spectral frame in which sysvel is specified (for mode=cubesrc only)</shortdescription>
682
682
<description>Spectral frame in which sysvel is specified (for mode=cubesrc only)</description>
683
683
<value type="string"></value>
684
684
</param>
685
685
-->
686
-
<param type="string" name="interpolation" subparam="true">
686
+
<param type="string" name="interpolation">
687
687
<shortdescription>Spectral interpolation (nearest,linear,cubic)</shortdescription>
688
688
<description>Spectral interpolation (nearest,linear,cubic)
689
689
690
690
Interpolation rules to use when binning data channels onto image channels
691
691
and evaluating visibility values at the centers of image channels.
692
692
693
693
Note : 'linear' and 'cubic' interpolation requires data points on both sides of
694
694
each image frequency. Errors are therefore possible at edge channels, or near
695
695
flagged data channels. When image channel width is much larger than the data
696
696
channel width there is nothing much to be gained using linear or cubic thus
698
698
699
699
700
700
</description>
701
701
<value type="string">linear</value>
702
702
<allowed kind="enum">
703
703
<value>nearest</value>
704
704
<value>linear</value>
705
705
<value>cubic</value>
706
706
</allowed>
707
707
</param>
708
-
<param type="bool" name="perchanweightdensity" subparam="true">
708
+
<param type="bool" name="perchanweightdensity">
709
709
<shortdescription>whether to calculate weight density per channel in Briggs style weighting or not</shortdescription>
710
710
<description>
711
711
When calculating weight density for Briggs
712
712
style weighting in a cube, this parameter
713
713
determines whether to calculate the weight
714
714
density for each channel independently
715
715
(the default, True)
716
716
or a common weight density for all of the selected
717
717
data. This parameter has no
718
718
meaning for continuum (specmode='mfs')
2587
2587
<!--=============================================== -->
2588
2588
<!--=============== Constraints ============== -->
2589
2589
2590
2590
<constraints>
2591
2591
2592
2592
<when param="usedata">
2593
2593
<equals value="sd" type="string">
2594
2594
<default param="sdimage"><value>""</value></default>
2595
2595
<default param="sdpsf"><value>""</value></default>
2596
2596
<default param="sdgain"><value>1.0</value></default>
2597
-
<default param="dishdiam"><value>100.0</value></default>
2597
+
<default param="dishdia"><value>100.0</value></default>
2598
2598
</equals>
2599
2599
<equals value="sdint" type="string">
2600
2600
<default param="sdimage"><value>""</value></default>
2601
2601
<default param="sdpsf"><value>""</value></default>
2602
2602
<default param="sdgain"><value>1.0</value></default>
2603
-
<default param="dishdiam"><value>100.0</value></default>
2603
+
<default param="dishdia"><value>100.0</value></default>
2604
2604
</equals>
2605
2605
</when>
2606
2606
2607
2607
<when param="selectdata">
2608
2608
<equals type="bool" value="True">
2609
2609
<default param="field"><value>""</value></default>
2610
2610
<default param="spw"><value>""</value></default>
2611
2611
<default param="timerange"><value>""</value></default>
2612
2612
<default param="uvrange"><value>""</value></default>
2613
2613
<default param="antenna"><value>""</value></default>
2628
2628
<default param="projection"><value>"SIN"</value></default>
2629
2629
<default param="startmodel"><value>""</value></default>
2630
2630
</notequals>
2631
2631
</when>
2632
2632
-->
2633
2633
<when param="specmode">
2634
2634
<equals type="string" value="mfs">
2635
2635
<default param="reffreq"><value>""</value></default>
2636
2636
<!-- <default param="nterms"><value>1</value></default> -->
2637
2637
</equals>
2638
-
<equals type="string" value="cube">
2638
+
2639
+
<!-- <equals type="string" value="cube">
2639
2640
<default param="nchan"><value>-1</value></default>
2640
2641
<default param="start"><value>""</value></default>
2641
2642
<default param="width"><value>""</value></default>
2642
2643
<default param="outframe"><value>""</value></default>
2643
2644
<default param="veltype"><value>"radio"</value></default>
2644
2645
<default param="restfreq"><value>[]</value></default>
2645
2646
<default param="interpolation"><value>"linear"</value></default>
2646
2647
<default param="chanchunks"><value>1</value></default>
2647
2648
<default param="perchanweightdensity"><value>True</value></default>
2648
2649
</equals>
2660
2661
2661
2662
<equals type="string" value="cubedata">
2662
2663
<default param="nchan"><value>-1</value></default>
2663
2664
<default param="start"><value>""</value></default>
2664
2665
<default param="width"><value>""</value></default>
2665
2666
<default param="veltype"><value>"radio"</value></default>
2666
2667
<default param="restfreq"><value>[]</value></default>
2667
2668
<default param="interpolation"><value>"linear"</value></default>
2668
2669
<default param="chanchunks"><value>1</value></default>
2669
2670
<default param="perchanweightdensity"><value>False</value></default>
2670
-
</equals>
2671
+
</equals>-->
2671
2672
</when>
2672
2673
2673
2674
<when param="gridder">
2674
2675
<equals type="string" value="standard">
2675
2676
<default param="vptable"><value>""</value></default>
2676
2677
<default param="pblimit"><value>0.2</value></default>
2677
2678
</equals>
2678
2679
<equals type="string" value="widefield">
2679
2680
<default param="wprojplanes"><value>1</value></default>
2680
2681
<default param="facets"><value>1</value></default>