Re: [ferret_users] Strange dots from VECTOR command

[Andy Jacobson <andy.jacobson@xxxxxxxx>]

Ryo,

Is this one of ferret's anti-aliasing artifacts? I was hoping the python display modules took care of that once and for all.

-Andy

On 7/29/22 10:59 AM, Ryo Furue wrote:
> 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 <http://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

--
Andy Jacobson
andy.jacobson@xxxxxxxx

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