Display options

Map list as color composite

Info:

Select this check box if you wish to see the values of the three selected bands as (band 1, band 2, band 3) when you press the left mouse button in a map window. Clear this check box if you do not wish to obtain info when pressing the left mouse button.

Scale limits:

Select this check box when this color composite should be displayed or hidden depending on the scale specified in the scale control of the map window; specify the scale range within which the color composite should be displayed. The color composite will be automatically hidden if the scale of the map window is outside this range.

With this option you can achieve for instance, that very detailed maps (e.g. on cadastral units) are only displayed when using a large scale in a map window, or that very general maps which depict overviews are only displayed when using a small scales in a map window, etc.

Clear this check box when you wish to display the color composite regardless of the scale of the map window.

Transparent:

Select this check box when you wish to display the interactive color composite with a certain transparency. Any layer that has been added to the map window before, e.g. a shadow map, will remain partly visible through the transparent color composite layer. Subsequently, type a value for the transparency rate (percentage): value 1 means almost not transparent, and value 99 means almost totally transparent.

Clear this check box to just display the color composite, i.e. non-transparent.

Mind:

• For Transparency, the Display Settings of your screen must be set to 32 bit (True Color).
• When the map window already displays another raster map, you can only add raster maps which have the same georeference. You can use the Resample operation to transform a raster map to a desired georeference.

RGB:

Select this option when one band should be displayed in Red, one in Green and one in Blue.

YMC:

Select this option when the three selected bands should be displayed as Yellow, Magenta, Cyan.

HSI:

Select this option when the three selected bands should be displayed as Hue, Saturation, Intensity.

When using the RGB option:

Red band:

Select a map from the map list to be displayed in shades of red.

Green band:

Select a map from the map list to be displayed in shades of green.

Blue band:

Select a map from the map list to be displayed in shades of blue.

When using the YMC option:

Yellow band:

Select a map from the map list to be displayed in Yellow.

Magenta band:

Select a map from the map list to be displayed in Magenta.

Cyan band:

Select a map from the map list to be displayed in Cyan.

When using the HSI option:

Hue band:

Select a map from the map list which will be used for Hue.

Saturation band:

Select a map from the map list which will be used for Saturation.

Intensity band:

Select a map from the map list which will be used for Intensity.

Stretch ranges:

Specify for each selected map the range of values that should be taken into account. By default, the 1% intervals are listed, i.e. 1% of the values on both sides of a map's histogram will be ignored.

Notes:

• For more information on color composites, refer to Color Composite : algorithm.

• For more information on YMC or HSI conversion formulas, refer to Color Separation : algorithm.

Light, etc:

Select option Light to display this map a little lighter than normal, select option Normal to display this map with normal brightness, or select option Dark to display this map a little darker than normal. Select option Gray to display this map in gray tones regardless of the colors in the picture.

Create Pyramid Layers:

In case pyramid layers are not yet available for the raster maps of this map list:

• Select this check box to create pyramid layers for all raster maps in the map list. Pyramid layers speed up the display of large raster maps in a map window.
• Clear this check box if you do not wish to create pyramid layers for the raster maps in the map list.

For more information on pyramid layers, see ILWIS objects : Raster maps - Pyramid layers.