Mesh Thickness Field — How thick a mesh's material is at each point, as a scalar field: every interior point takes twice the depth of the mid-surface point it climbs to, and the field is 0 away from the mesh.
Point Values — Attaches a value to each point of a list, giving Point Values that other blocks can interpolate or filter.
Point Values to Field — Turns Point Values into a field defined everywhere by interpolating between the samples.
Points by Solid — Keeps the points, or Point Values, that lie in one region of a Solid: strictly inside, strictly outside, or on its surface (within 1 nm).
RBF Field — A smooth field through scalar or vector Point Values, fitted with Gaussian radial basis functions whose width is the average point spacing divided by the factor.
Sample Field — Reads a scalar or vector field at chosen points and hands the numbers on as values: one point gives one value, a point list gives a list in the same order.
Sample Gradient — A scalar field's gradient, estimated at chosen points from samples 0.05 either side along each axis.