Field Variance Node

The Field Variance node computes the variance and standard deviation of a field over a given domain. This is useful for measuring how much a value varies across geometry or within specific groups.

For example, it can be used to analyze the spread of values like weights, positions, or custom attributes within each group defined by the Group ID.

Đầu Vào (Inputs)

Value (Giá Trị)

The field to evaluate. Can be a float or a vector depending on the Data Type. For vector values, variance is computed separately per component (X, Y, Z).

ID của Nhóm [Group ID]

An index used to group values together for multiple separate variances. This can be thought of as a choice of the "bin" in which to place each value. This input has no effect when it is only a single value.

Tính Chất (Properties)

Kiểu Dữ Liệu (Data Type)

Số Thực (Float):

The node will average a Float field.

Véctơ (Vector):

The node will average a Vector field.

Phạm Vi (Domain)

The attribute domain used for evaluate the Value input.

Đầu Ra (Output)

Độ Lệch Chuẩn (Standard Deviation)

The square root of the variance, describing the spread of values.

Phương Sai (Variance)

A measure of the average squared deviation from the mean. Higher values indicate more variation in the input field.