Colour Ramp

Colour ramping automatically generates graduated colours between the start and end colours of the ranges (or bins) you have selected for a Numeric Colour Set or a Text Colour Set. The colours of those ranges and the palette display will be refreshed.

  1. Select the ranges (or bins) you want to ramp.
  2. Click the Colour Ramp button or right-click and select Colour Ramp Selected from the right-click menu.

    3. You can also select an option to ramp All ranges.

    The Edit Colour Set right-click menu

Only one “colour ramp” can be created at a time. However, you can define more than one colour ramp by selecting a different subset of ranges or bins for each ramp.

Range versus Spectrum

To define colour ramps with very smooth transitions from one range to the next, select the Spectrum option at the top of the palette display.

Use Spectrum when you want to create a colour set with very smooth transitions. Each range and its associated colour is divided into eight sub-ranges to create a spectrum. The result is that values falling into one of the sub-ranges are allocated the appropriate “sub-colour”.

Use this feature when you are creating a contour grid map and want the colour transitions between cells to be very smooth.