These modules generally modify or add to components of the input Field without changing its underlying positions and connections. For example, AutoColor creates a "colors" component based on the data values of a Field and Compute performs a mathematical operation on the "data" component of a Field.

• AutoColor -- Automatically colors a data Field. By default, the minimum data value is blue, the maximum data value is red, and data values between are blue to red through cyan, green, and yellow. You can control what subset of the data range to color and what portion of the color wheel to use. You can also control the opacity of the object and the intensity of the colors. AutoColor also chooses appropriate colors and opacities for volume rendering.

• AutoGrayScale -- Automatically colors a data field using a gray scale.

• Color -- Allows you more control over the coloring of an object than is possible with AutoColor. You can specify a string representing a color (e.g., "spring green"), an RGB color, or a color map (from the Colormap Editor, for example) to be applied to a data Field. You can also use the Color module to make objects (e.g., isosurfaces) translucent.

• Compute -- Performs point-by-point arithmetic on a Field or Fields. For example, it can add the "data" component of one Field to the tangent of the "data" component of another Field. You can also use the Compute module to select components from a vector data Field; construct a vector "data" component from a set of scalar input data Fields; or perform conditional operations.

• Compute2 -- Differs from Compute in allowing the expression to be passed in by means of an input tab (e.g., from a Selector interactor).

• Convert -- Converts between hue, saturation, and value color space and red, green, and blue color space. You can convert either a single vector, a list of vectors, or a color map.

• DFT -- Performs a discrete Fourier transformation on a 2- or 3-dimensional field.

• Direction -- Converts azimuth, elevation, and distance to Cartesian coordinates (x, y, and z), which are useful for specifying camera viewing directions and for specifying ClipPlane or MapToPlane normal directions.

• DivCurl -- Computes the divergence and the curl of a vector field.

• Equalize -- Applies histogram equalization to a field.

• FFT -- Performs a fast Fourier transformation on a 2- or 3-dimensional field.

• Filter -- Filters a Field. You can specify a name describing a filter (e.g., "laplacian") or a filter matrix explicitly.

• Gradient -- Computes the gradient of a scalar Field.

• Histogram -- Computes a histogram and the median of an input data Field. You can then use Plot to visualize the result as a 2-dimensional graph.

• Map -- Maps Fields onto one another. For example, you can map a data Field onto an isosurface or onto a tube that has been formed from a streamline.

• Measure -- Performs measurements (e.g., surface area or volume) on a data Object.

• Morph -- Applies a binary morphological operator, such as erode or dilate.

• Post -- Changes the dependency of data (and other components) between positions and connections.

• Sort -- Sorts a list or Field based on values in the data component.

• Statistics -- Computes the statistics of a Field: the mean, standard deviation, variance, minimum, and maximum. You can use these statistics as input for other modules, or print them using the Echo or Print modules.