User's Guide

Virtualwind   →   Monitor Data Visualization   →   Actors   →   Orthoslice Isolines

Orthoslice Isolines

This Actor generates isolines for a quantity on an orthoslice –– a slice plane of the Domain volume that is orthogonal to the Domain's X, Y, or Z axis.

Virtualwind uses "SliceOrientation" to set the axis (i.e., X, Y, or Z) that the orthoslice is orthogonal to and uses "SliceIndex" to choose a particular slice in that orientation. For example, if you have set the wind resolution to be 32 x 64 x 128 then you will have available SliceIndex's in the range [0, 31], [0, 63], and [0, 127] for the X, Y, and Z SliceOrientations, respectively.

An isoline connects points of a surface where the magnitude of a certain quantity (such as pressure or wind speed) takes a constant value. For example, you can construct isolines of wind speed on the top plane of the Domain (the slice plane at the maximum Z coordinate value and parallel to the XY plane). Usually multiple isolines of different values are constructed for a chosen quantity to illustrate the variation of the quantity values on the orthoslice.

For a chosen quantity, this Actor automatically extracts the minimum and maximum values on the specified orthoslice and allows you to specify the number of isolines you want to construct within this range.

You can also customize the minimum and maximum limits used to color map the isolines to highlight a particular value range. By default, they are set to the extracted minimum and maximum values.

The following figure shows an example of isolines of the wind velocity on an orthoslice parallel to the XY plane of the Domain with the custom color map limits set to 0~13m/s (the extracted maximum mean speed on this slice was 18.55m/s).