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
-----------
set data
tmp.ncshade/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