What's the difference between Antenna1 and Antenna2? Axis definitions in plotms: Difference between revisions
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[[Plotms]] is a powerful tool for visualizing your measurement set, and you | [[Plotms]] is a powerful tool for visualizing your measurement set, and provides you with lots of choices for X- and Y- Axes. It's not always clear what the choices mean, so below are some explanations. | ||
== Scan == | == Scan == | ||
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The time at which the visibility was observed, given in terms of calendar year (yyyy/mm/dd/hh:mm:ss.ss) | The time at which the visibility was observed, given in terms of calendar year (yyyy/mm/dd/hh:mm:ss.ss) | ||
Time_interval | == Time_interval == | ||
??? | |||
Is this integration time?? In what units?? | |||
??? | |||
Spw | == Spw == | ||
The spectral window number (analogous to what VLA users know as an IF). The characteristics of each spectral window are listed in [[listobs]]. | |||
== Channel == | |||
The frequency channel | |||
Frequency | Frequency | ||
Revision as of 22:46, 18 February 2010
Plotms is a powerful tool for visualizing your measurement set, and provides you with lots of choices for X- and Y- Axes. It's not always clear what the choices mean, so below are some explanations.
Scan
The scan number, as listed by listobs.
Field
The field number, as listed by listobs. Typically, each source should have a different field number.
Time
The time at which the visibility was observed, given in terms of calendar year (yyyy/mm/dd/hh:mm:ss.ss)
Time_interval
??? Is this integration time?? In what units?? ???
Spw
The spectral window number (analogous to what VLA users know as an IF). The characteristics of each spectral window are listed in listobs.
Channel
The frequency channel
Frequency
Corr
Antenna1
Antenna2
Baseline
UVDist
UVDist_L
U
V
W
Velocity
Amp
Phase
Real
Imag
Flag
Azimuth
Elevation
HourAngle
ParAngle
Antenna
Ant-Azimuth
Ant-Elevation
Ant-ParAng
Row
FlagRow
