Module: Height Map Slice ()

Description:

The Height Map Slice module offers another method for the visualization of scalar data fields defined on regular grids, such as stacks of tomographic images. The data are visualized by extracting an arbitrary xy, yz, or xz slice out of the volume. This slice is represented as a surface for which the heights of the vertices are mapped to the data, using a tunable scale parameter.

Connections:

Data [required]
The scalar or color field to be visualized. If an RGBA color field is connected the vertices of the height field are colored as in the color field. The displacement is computed from the fields grayvalue intensity which is computed using the formula 0.3*R+0.59*G+0.11*B.

ColorField [optional]
Optional scalar field used for pseudo-coloring. Only RGBA color fields or scalar fields can be connected. If an RGBA color field is connected, the colormap is not used and the vertices of the height field are colored according to the RGBA values. If a scalar field is connected, the vertices are colored according the scalar values in the colormap.

Colormap [optional]
The colormap used to map data values to colors.

ROI [optional]
Connection to a module defining a region of interest (not supported).

Ports:

Orientation

This port provides three buttons for resetting the slice orientation: xy perpendicular to the z-axis, xz perpendicular to the y-axis, or yz perpendicular to the x-axis.

Slice Number

This slider allows you to select different slices.

Mapping

This port provides two options to change the way the values are mapped into heights. Relative mapping is the default behavior of the module. The data range is linearly scaled to an altitude range that is in the same scale as the bounding box of the data. Absolute mapping uses a constant reference to compute the altitude of the quads. It means that two data set with the same bounding box can be visually compared with this module, since they will have the same reference altitude.

Scale

This slider allows you to select the desired scale for the data-heights mapping. This should be in the range [-1,1].

Offset

This slider allows choosing an offset value that is added to the data values before scaling is applied. It changes the value that is cutting the slice the module is representing.

Display Options

Colormap

The colormap used to map data values to colors.

DrawStyle

This port is inherited from View Base. For a description see there.