After each quality and relevance has been computed, the actual color for the pixel to be set will be calculated. In this process, a number of settings is used, all of them rather important for the result.
The first three setting you will notice are Color0, Color050 and Color100. Those settings specify the colors used for 0%, 50% and 100%. All colors in between emerge from a linear mixing of the two colors on either side of the value (i.e. 25% will be in the middle between Color0 and Color050). A recommended setting is the predefined red-yellow-green color scheme.
A very important value is the "RelativeResolution". It defines how fine you want the interpolation to be. A value of 1 means, that the interpolated image will have as many pixels as the ground plan. Accordingly, 0.5 means only half the width and height (thus, only a quarter the pixel count) of the ground plan. With this setting the performance of interpolation can be heavily improved. A recommendation for this value is hard to make, since it depends on the size of the ground plan. However, setting the value to 0.5 rather than 1 will speed up interpolation by a factor 4, producing an image with a negligible loss of information.
The next, rather useful setting is the "StepWidth", user in rasterizing the output. For instance, if you only wish to have 10 different output levels (0%, 10%, 20%, etc.), chose a value of 0.1 (1/10), thus setting the width of one output level to 10%. Accordingly, a value of 0.05 will produce 20 levels, each with a width of 5%. A value of 0 will show the interpolated quality without leveling and is the predefined setting.
A less important setting is the "InvalidateRange". It defines how often during interpolation the image-in-progress will be shown. A value to small will cause a loss of efficiency, since every drawing takes a little time. A value to high will cause more efficiency but less fluent images. The recommended setting is 4 (
).