Colour By Attribute

Colour Points

Use the Colour By Attribute option to colour the X, Y, Z and W coordinate values of points in Vulcan. It is possible to colour the points by using two points, such as red and blue (in which case the low values are red, middle values purple and the high values blue see Diagram 1), or by spectrum (see Diagram 2 and 3), or by a colour channel or channels (see Diagrams 4, 5 and 6).

Figure 1 : X coordinates coloured by a Colour Range

Figure 2 : X coordinates coloured by a Spectrum

Figure 3 : X coordinates coloured by a Spectrum and limited to a range

Figure 4 : X coordinates coloured by Red Channel

Figure 5 : X coordinates coloured by Red Channel and Green Channel

Figure 6 : X coordinates coloured by Red and Y coordinates coloured by Blue

When colouring by channel you can invert the colour ramp. This means that the values to which colours are applied is inverted see Diagram 7,

Figure 7 : X coordinates coloured by inverted Red Channel

When colouring by spectrum or a colour range you can specify to equalise the colour ramp. This means that the colour is applied in a non-linear fashion ensuring that any extremes in the data do not affect the colouring. This means that minute differences in dense areas will be discernible.

Figure 8 : X coordinates coloured by spectrum (colour ramp not equalised)