Connect points to be a curve

[ali3216]

Hi everyone, I want close 9points to been a curve, how can Ido?Stereographic_projection_ME_V2 20200721.gh (40.7 KB)

like this

[dowazura]

Stereographic_projection_ME_V2 20200721_re.gh (36.2 KB)

[ali3216]

Thank so much Dowazura. You did me a big favor.