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[ferret_users] Strange dots from VECTOR command



Dear Ferret users,

Has anybody seen this problem?  The VECTOR command plots some black dots as can be seen below. Run the attached Ferret script like so

pyferret -nodisplay -script try2.jnl

I also attach the datafile that the script uses.

These dots are very sensitive. If I change something, they are often gone but occasionally there are many more of them.  (That's why I couldn't simplify the problem further.)

macOS 12.4 & 12.5
PyFerret v7.63 (optimized); Darwin 19.6.0 - 10/13/20

Best regards,

Ryo


tmp.png

-----------
set data tmp.nc
shade/nokey 0*u_anom ! dummy
plot/vs/symbol/thick=3/size=0.5/color=red/nolabel/ov\
  {38.25}, {143.58333333333333333333}
vector/aspect/ov u_anom, v_anom
frame/file=tmp.png


Attachment: tmp.nc
Description: Binary data

Attachment: try2.jnl
Description: Binary data


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