[ncl-talk] problem with PolyMarker opacity

[Greg Thompson]

Dear NCL users,

I am having a frustrating problem with using
  gsn_add_polymarker
to add filled circle markers to a map object and getting it to acknowledge
the
  gsMarkerOpacityF
attribute.  No matter what I try, it is not respecting any value of
opacity, it is always 100% opaque.

Yet there is no problem when It try running the NCL documented example code
   https://www.ncl.ucar.edu/Applications/Scripts/newcolor_3.ncl
but that is not adding the polymarker to a map object.

Can anyone suggest a workaround or potential solution to try?

Thanks,

Greg Thompson (UCAR/JCSDA, formerly NCAR-RAL)
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