The differences between "CenterOfMass" and "Coordinates" in the PartType0 (gas)
Yun Wang
4 Aug '20
Hi,
As the title shows, What are the differences between "CenterOfMass" and "Coordinates" in the PartType0 (gas) ?
Dylan Nelson
4 Aug '20
Hello,
The Coordinates is the Voronoi cell center, as in the description of CenterOfMass: "the center of mass, which in general differs from the geometrical center of the Voronoi cell".
The "Voronoi center" or "geometrical center of the Voronoi cell" both refer to the "seeds, sites, or generators" in the language of the wikipedia page.
We typically use Coordinates for all analysis, although the CenterOfMass gives a more accurate gravitational force calculation. The difference between the two for any post-processing analyses should be negligible.
Hi,
As the title shows, What are the differences between "CenterOfMass" and "Coordinates" in the PartType0 (gas) ?
Hello,
The
Coordinatesis the Voronoi cell center, as in the description ofCenterOfMass: "the center of mass, which in general differs from the geometrical center of the Voronoi cell".The "Voronoi center" or "geometrical center of the Voronoi cell" both refer to the "seeds, sites, or generators" in the language of the wikipedia page.
We typically use
Coordinatesfor all analysis, although theCenterOfMassgives a more accurate gravitational force calculation. The difference between the two for any post-processing analyses should be negligible.Thank you Dylan, I got it.