Color Scaleguide > Concepts > Color > Color Scale
- Color Scale Editor
Colour coding is often provided in a limited way only or it is not used effectively. Furthermore, adapting colour scales automatically by applying a simple minimum-maximum-scaling often results in visual representations of different views on the data which cannot be compared with each other. This chapter describes how appropriate automatic or user defined colour coding schemes can enhance the visual exploration of spatial or spatial-temporal data. From a collection of schemes the user chooses the most appropriate one (sequential or diverging) with respect to the users' visualization goal. The default scheme is a scientific proven diverging blue-to-red colour scale. The Statistics eXplorer scalar colour mapping area (colour legend) is used to assign colour to each scalar value in the dataset. This will allow you to, for example, assign a blue colour to regions with a low "population growth rate" while assigning red to regions with higher growth rate.
Open the Color indicator and scale dialog by either pressing the settings button on the color legend or using the menu, Settings->Color Legend->Settings. Then press the "Add Color Scale" button to open the Color Scale Editor. To create a new scale, simply drag the sliders or input color values so that the left hand box shows the color you want. Then click and drag the colored box down to the "drop here" mark. Repeat the process for each color that should be in the scale. The checkbox that appears above each pair of colors denote whether they should be interpolated or not. When the scale is done, simply press "Save" and select the new scale.