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en:processing:z_scale [2011/03/02 14:39] (current)
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 +====== Z scale ======
 +There is a color scale and a numerical scale of the data. The numerical values are mapped to the color values. You can choose between several predefined color palettes by right-clicking on the color palette toolbar.
 +Also there are several mapping modes. The simplest is "​Autoscaling"​ - in this mode the color map is stretched from minimum to maximum of the data. Also you can select an area on the image and set is as a "​Region of interest"​ - then the minimum and maximum will be taken from this area.
 +Another common mode is "​Fixed"​ - in this mode you can manually select the range and offset of the color map. If you double-click the color palette toolbar, the limits will be set to the maximum and minimum of the data - this is a good point to start from.
 +The numerical Z scale of the surface image can be shown in different ways - in absolute or in relative coordinates,​ in different units. This parameters can be selected in "​Preferences"​ dialog (appears after a right-click on the image)