National Radio
Astronomy Observatory

sd.scantable.get_coordinate - Function

5.1.2 Return the spectral coordinate for a given row as a coordinate object
Description

Return the (spectral) coordinate for a a given ’rowno’.

Notes:

• This coordinate is only valid until a scantable method modifies the frequency axis.
• This coordinate does contain the original frequency set-up NOT the new frame. The conversions however are done using the user specified frame (e.g. LSRK/TOPO). To get the ’real’ coordinate, use scantable.freq_align first. Without it there is no closure, i.e.::
  
                c = myscan.get_coordinate(0)  
                c.to_frequency(c.get_reference_pixel()) != c.get_reference_value()  
            

Arguments

Example

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