6.2 User Preferences

The preferences function allows the user to choose a cursor color (the default is green) and the number of image colors to use when displaying image data.

Cursor Color:: Choose one of the eight specified cursor colors. The change takes affect as soon as the color is selected (i.e., before the user closes the preferences panel). The default cursor color is green.

The 200 and 256 radio buttons allow the user to select the number of colors to use when displaying image data. On 8-bit displays, this refers to the total number of image colors, on 24-bit displays this refers to the number of colors per color channel (red, green, and blue).

200:
When selected, 200 image colors will be used on 8-bit displays and 200 image colors per channel will be used on 24-bit displays. This results in some color compression on all displays including 24-bit displays. As a result, each gray level in the image does not have it's own unique color map cell and mapping operations may not work as expected in all cases. For example, it may not be possible to color pixels with gray levels 0 and 1 to different colors or map values 0 and 1 to different break points. The default is 200 image colors.

256:
When selected, 256 image colors will be used on 8-bit displays and 256 image colors per channel will be used on 24-bit displays. With 256 colors, there is no color compression done on the image data. The disadvantage to this method is that the image requires a separate color map from the other XID panels resulting in an increased color map "flashing" problem.

Dimiss:

Close the preferences panel.