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guide:help:dkbuiltin:tgis_controllegendform_pixel

Raster/Pixel Layer

Documentation | Help File | Layer Properties Control | Raster/Pixel layer

This is a description of the Layer Properties dialog box layout specific to pixel (image) layers. Use it to modify pixel layer appearance like color, histogram, contrast, etc.

Operations

List of all operations based on items in a left panel.

General

The General node covers general information about the layer.

Name Description
Interpretation Enforce interpretation of the file as grid or pixel layer.
Parameters are common and are described here.

Sections

The Sections node summarizes information about sections visibility.

Section

The Section node contains subnodes for specific layer properties.

Name Description
Parameters are common and are here.

Pixel

The Pixel node contains all properties to specify pixel layer appearance.

Colors
Name Description
Red Red channel enhancement in -100% .. 100%.
Green Green channel enhancement in -100% .. 100%.
Blue Blue channel enhancement in -100% .. 100%.
Brightness Brightness channel enhancement in -100% .. 100%.
Contrast Contrast channel enhancement in -100% .. 100%.
Inversion If checked colors will be inverted (looks like a negative)
Grayscale If checked, color image will be forces to appears as black and white.
Histogram If checked, image will be intensified by a histogram. Good for dark and blunt images.
Contract enhancement If checked, image will be intensified by simple contrast enhancement. Good for dark and blunt images.
Colors
Name Description
Red band An option to select different band to be used for red color channel. Good for multispectral images.
This combo-box also provides also access to turn the channel off.
Green band An option to select different band to be used for green color channel. Good for multispectral images.
This combo-box also provides also access to turn the channel off.
Blue band An option to select different band to be used for blue color channel. Good for multispectral images.
This combo-box also provides also access to turn the channel off.
Alpha band An option to select different band to be used for alpha (transparency) channel. Good for multispectral images.
This combo-box also provides also access to turn the channel off.
Page Option to select page number. Important only for multi-page images like some of TIFF images.
Transparency
Name Description
This option provides the ability to specify several zones of transparency by providing start and end color of transparency. It is useful for example to eliminate black borders around images.
Clicking on a color panel brings Define color to define color.

On a print screen above a zone defined as $FF000000..$FF6B6B6B eliminates from the image all colors on a ramp between black and gray.

2020/03/12 12:40

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