Automatically colors a field.
mapped, colormap = AutoColor(data, opacity, intensity, start, range, saturation, min, max, delayed, outofrange);
|data||data field||none||field to be colored|
|opacity||scalar||input dependent||opacity, between 0 and 1|
|start||scalar||0.6666||starting color (default = blue)|
|range||scalar||0.6666||range of color (default = blue to red)|
|saturation||scalar||1||saturation, between 0 and 1|
|min||scalar or data field||min of data||minimum of data to be colored|
|max||scalar or data field||max of data||maximum of data to be colored|
|delayed||flag||0||0: apply maps
1: delay applying color and opacity maps (byte data only)
|outofrange||vector list or string list||[.3 .3 .3]||how to color out-of-range points|
|mapped||color field||color-mapped input field|
|colormap||field||RGB color map used|
This module colors a specified field (data) by mapping hues to data values.
is an input field with data. If the input is a vector field, the colors are based on the magnitude of the data. If the input consists of matrices, the colors are based on the determinants.
specifies the opacity of the resulting object. Allowed values range from 0 to 1. Its default value is 1 for surfaces and 0.5 for volumes.
scales the amount of color. For opaque surfaces, the parameter scales from black (0) to full color (1). For volumes, it controls the brightness of the object when viewed along its longest dimension. Values greater than 1 can be used to brighten translucent surfaces or volumes that appear too dim. See also "Coloring Objects for Volume Rendering".
start and start - range
specify the colors applied to the minimum and maximum data values mapped. By default, the minimum data value is colored blue (0.6666), and the maximum is colored red (0 or 1; colors are defined cyclically from -&infinity; to &infinity;, so that a start of -1 = 0 =1, and so on).
specifies the saturation of the colors used. This value must be between 0 and 1.
min and max
specify the minimum and maximum data values mapped. If neither is specified, the minimum and maximum values of data are mapped. If min is scalar, the minimum data value is mapped to that value. If min is a data field, the minimum data value of that field is used.
The max parameter is interpreted in corresponding fashion. If min is a data field and max is unspecified, the module uses the minimum and maximum values of that field.
For volumes, regions with values outside the min-max range are invisible; for surfaces, such regions are gray by default.
determines whether "delayed colors" are created. Such colors are available only for byte data and they use less memory.
When delayed = 1:
specifies the coloring of data that fall outside the min-max range. This parameter applies only to surfaces; out-of-range data values for volumes are always invisible. If the parameter value is a single color (RGB vector or color-name string), it is applied to both the upper and lower out-of-range points. If it is a list of two colors, then it is applied to the lower and upper out-of-range points, respectively. Color strings can be any of the defined color-name strings (see Color) or either of strings "color of min" and "color of max."
Adds a "colors" component. An "opacities" component is added if opacity is less than 1 or if the input data is a volume. If delayed = 1, the "colors" component is a copy of the "data" component and a "color map" component is created. Similarly, an "opacity map" component is created if opacity is less than 1 or the input is a volume.
Example Visual Programs
Many example visual programs use AutoColor, including:
AlternateVisualizations.net ContoursAndCaption.net InvalidData.net MappedIso.net RubberTube.net ThunderGlyphSheet.net VolumeRendering.net SIMPLE/Autocolor.net
Color, ColorBar, AutoGrayScale, Display