TGAFormat

Résumé

The TGAFormat object represents a collection of Truevision Graphics Adaptor (TGA) file properties that can be configured and used with the export method on the Layout, MapFrame, and MapView objects to create an output TGA file.

Discussion

TGA files have historically been used for content that is meant to be used in other applications (for example, image sprites for animated games) and is read and written by many popular graphic arts applications. It supports multiple bit depths including 32 bit with alpha (transparency) support.

The createExportFormat method can be used to create a TGAFormat object if the format parameter is set to TGA. The returned TGAFormat object contains all the properties associated with a generating a TGA file. These properties can be modified accordingly to produce different output results.

Propriétés

Nom	Explication	Type de données
clipToElements (Lecture et écriture)	If set to `True`, include the areas of the page that have map or layout element content only, rather than exporting the entire page. This property only applies when exporting a `Layout` object. The default value is `False`.	Boolean
colorMode (Lecture et écriture)	A string constant that represents the number of bits to describe color in a pixel. The default value is `32-BIT_WITH_ALPHA`. 8-BIT_ADAPTIVE_PALETTE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output. 8-BIT_GRAYSCALE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output. 24-BIT_TRUE_COLOR—16,777,216 possible colors. This option is good for maximum color fidelity. 32-BIT_WITH_ALPHA—16,777,216 possible colors and an alpha (transparency) channel of 255 values. This option is useful for maps or layouts with transparency.	String
filePath (Lecture et écriture)	A string that represents the system path and file name, including the extension, for the exported file.	String
height (Lecture et écriture)	The height, in pixels, of the map area to be exported. This property only applies when exporting a `MapView` object. The default value is `960`.	Double
resolution (Lecture et écriture)	The effective dpi of the output vector data. The default value is 96. Remarque : When exporting a `MapView`, the dpi is calculated automatically using system dpi scaling and therefore this value will be ignored.	Integer
showSelectionSymbology (Lecture et écriture)	Show selected features in the map or map frame as selected in the output file. Setting this value to `False` does not affect selection within the view, only in the output file. The default value is `False`.	Boolean
transparentBackground (Lecture et écriture)	If set to `True`, export a transparent page instead of a white page. This property only applies when exporting a `Layout` object. The default value is `False`. Remarque : Transparent backgrounds are only supported when `colorMode` is set to `32-BIT_WITH_ALPHA`. This option is not available for maps, but transparency on a map is honored on export.	Boolean
width (Lecture et écriture)	The width, in pixels, of the map area to be exported. This property only applies when exporting a `MapView` object. The default value is `960`.	Double

Méthodes

`setColorMode(color_mode)`

A string constant that represents the number of bits to describe color in a pixel.

Nom	Explication	Type de données
color_mode	Below is a list of valid strings. 8-BIT_ADAPTIVE_PALETTE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output. 8-BIT_GRAYSCALE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output. 24-BIT_TRUE_COLOR—16,777,216 possible colors. This option is good for maximum color fidelity. 32-BIT_WITH_ALPHA—16,777,216 possible colors and an alpha (transparency) channel of 255 values. This option is useful for maps or layouts with transparency.	String

Nom

Explication

Type de données

color_mode

Below is a list of valid strings.

8-BIT_ADAPTIVE_PALETTE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output.
8-BIT_GRAYSCALE—Uses 256 of the most commonly-used pixel colors in the image’s palette, thereby minimizing the number of pixels whose color may change during output.
24-BIT_TRUE_COLOR—16,777,216 possible colors. This option is good for maximum color fidelity.
32-BIT_WITH_ALPHA—16,777,216 possible colors and an alpha (transparency) channel of 255 values. This option is useful for maps or layouts with transparency.

String

Exemple de code

TGAFormat example

The following script exports a layout to TGA format using default property values.

p = arcpy.mp.ArcGISProject('current')
lyt = p.listLayouts()[0]

tga = arcpy.mp.CreateExportFormat('TGA', r'C:\Temp\Output.tga')

lyt.export(tga)