[daip] KNTR pol vectors.

Craig Walker cwalker at aoc.nrao.edu
Sat Dec 28 16:26:43 EST 2002


When I run KNTR asking for polarization vectors with LTYPE 3, it works
fine.  I switch to LTYPE 4, I get:

eolus > KNTR 1: Task KNTR   (release of 31DEC03) begins
eolus > KNTR 1: Start contouring at plane    1
eolus > KNTR 1: Start vectors at plane    1
eolus > KNTR 1: AXES NOT COORDINATE PAIR: ANGLES MEANINGLESS
eolus > KNTR 1: ERROR DURING GRAPHING WILL TRY TO FINISH PARTIAL GRAPH
eolus > KNTR 1: Appears to have ended successfully
eolus > KNTR 1: eolus        31DEC03 TST: Cpu=       1.6  Real=       3

And no polarization vectors appear.

Not too friendly to us VLBI types who nearly always use LTYPE 4 (we don't
necessarily know the absolute position).  With offsets in arcseconds, it
is possible to get an angle and PCNTR has no problems with the idea.

Cheers,

Craig

PS - In the help file, input 4 is billed as optionally the Q image, same
as input 3.  I think you meant U.

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