C Appendix: Usage Examples
Table 10: Summary of the MS used
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| FIELDID | SPWID | NChan | Pol | NRows | Source Name |
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| 0 | 0 | 127 | RR | 10260 | 0530+135 |
| 1 | 0 | 127 | RR | 779139 | 05582+16320 |
| 2 | 0 | 127 | RR | 296190 | 05309+13319 |
| 3 | 0 | 127 | RR | 58266 | 0319+415 |
| 4 | 0 | 127 | RR | 32994 | 1331+305 |
| 5 | 1,2 | 1 | RR,RL,LL,RR | 23166 | KTIP |
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C.1 Example 1
--------------------------------------------------------------------
Select field IDs 0,1,2 and field Named KTIP
Time range: 25/22:40:0 to 26/03:30:0
Baselines: All baselines between antennas named "1" to "10"
Spw: 0 Channels: 10 to 30 in steps of 1
--------------------------------------------------------------------
sbhatnag@atlas>mssplit
mssplit>inp
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = 0~2,KTIP
time = 25/22:40:0 ~ 26/03:30:0
spw = 0:10~30
baseline = 1~10&
scan =
array =
uvdist =
mssplit>go
Ant1 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Ant2 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Field= [0, 1, 2, 5]
SPW = [0]
Chan = [10, 30, 1]
Scan = []
Array = []
UVRange = Axis Lengths: [2, 0] []
UV in meters = []
Number selected rows: 99819
C.2 Example 2
--------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: All baselines between antennas named "1" to "10"
Spw: All available channels for spw 1 and 2
--------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1,2
baseline = 1~10&
scan =
array =
uvdist =
mssplit>go
Ant1 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Ant2 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Field= [5]
SPW = [1, 2]
Chan = SPW 1 : Channels [0, 0, 1]
SPW 2 : Channels [0, 0, 1]
Scan = []
Array = []
UVRange = Axis Lengths: [2, 0] []
UV in meters = []
Number selected rows: 2376
C.3 Example 3
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: All baselines between antennas ⋆named⋆ "1" to "10"
Spw: SPW ID 0
No data should be selected
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 0
baseline = 1~10&
scan =
array =
uvdist =
mssplit>go
Ant1 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Ant2 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Field= [5]
SPW = [0]
Chan = SPW 0 : Channel [0, 126, 1]
Scan = []
Array = []
UVRange = Axis Lengths: [2, 0] []
UV in meters = []
Number selected rows: 0
C.4 Example 4
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: All baselines between antennas ⋆named⋆ "1" to "10"
Spw: SPW ID 1
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1
baseline = 1~10&
scan =
array =
uvdist =
mssplit>go
Ant1 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Ant2 = [21, 10, 17, 4, 24, 3, 11, 0, 23, 6]
Field= [5]
SPW = [1]
Chan = SPW 1 : Channels [0, 0, 1]
Scan = []
Array = []
UVRange = Axis Lengths: [2, 0] []
UV in meters = []
Number selected rows: 1188
C.5 Example 5
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: Between antennas "1" to "3" and "4" to "6"
Spw: SPW ID 1
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1
baseline = 1,2,3&4,5,6
scan =
array =
uvdist =
mssplit>go
Ant1 = [21, 10, 17]
Ant2 = [4, 24, 3]
Field= [5]
SPW = [1]
Chan = SPW 1 : Channel [0, 0, 1]
Scan = []
Array = []
UVRange = Axis Lengths: [2, 0] []
UV in meters = []
Number selected rows: 198
C.6 Example 6
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: Error in antenna specification
Spw: All spectral windows
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1
baseline = 1~3 & $~6
uvdist =
mssplit>go
###AipsError: Antenna Expression: Parse error at or near '$' (near
char. 7 in string "1~3 & $~6")
C.7 Example 7
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: Use antenna ranges
Spw: 1
UVRange: [0,5000] K-Lambda
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1
baseline = 1~3 & 4~6
scan =
array =
uvdist = 0~5klambda
mssplit>go
Ant1 = [21, 10, 17]
Ant2 = [4, 24, 3]
Field= [5]
SPW = [1]
Chan = SPW 1 : Channel [0, 0, 1]
Scan = []
Array = []
UVRange = [0, 5000] lambda
Number selected rows: 33
C.8 Example 8
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: 25/22:40:0 to 26/03:30:0
Baselines: Baselines between antennas "1" to "3" and "4" to "6"
and baseline "10"-"11"
Spw: 1
UVRange: [0, 5000] K-Lambda
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = ~/Data/CASATest/G192/g192_a.ms
outms = tt.ms
field = K⋆
time = 25/22:40:0 ~ 26/03:30:0
spw = 1
baseline = 1~3 & 4~6 ; 10&11
scan =
array =
uvdist = 0~5klambda
mssplit>go
Ant1 = [21, 10, 17, 6]
Ant2 = [4, 24, 3, 1]
Field= [5]
SPW = [1]
Chan = SPW 1 : Channel [0, 0, 1]
Scan = []
Array = []
UVRange = [0, 5000] lambda
Number selected rows: 33
C.9 Example 9
-------------------------------------------------------------------
Select field Named K⋆ (wild card usage)
Time range: Error in range operator
Baselines: Baselines between antennas "1" to "3" and "4" to "6"
Spw: All spectral windows
UVRange: [0, 5000] K-Lambda
-------------------------------------------------------------------
sbhatnag@atlas>mssplit
ms = /home/rohir3/sanjay/CASATests/G192.ms/
outms = tt.ms
field = K⋆
time = 25/22:40:0 - 26/03:30:0
spw = 1
baseline = 1~3 & 4~6 ; 10&11
scan =
array =
uvdist = 0~5klambda
mssplit>go
First selected timestamp = 26-Apr-2003/03:20:45.0
###MSSelectionError: MSSelection time error: Parse error at or near
token '-' (near char. 12 in string "25/22:40:0 - 26/03:30:0")
(Did you know we use "~" as the range operator (for a good reason)?)