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dev.capabilities: Query Capabilities of the Current Graphics Device

dev.capabilities: Query Capabilities of the Current Graphics Device

dev.capabilitiesR Documentation

Query Capabilities of the Current Graphics Device

Description

Query the capabilities of the current graphics device.

Usage

dev.capabilities(what = NULL)

Arguments

what

a character vector partially matching the names of the components listed in section ‘Value’, or NULL which lists all available capabilities.

Details

The capabilities have to be specified by the author of the graphics device, unless they can be deduced from missing hooks. Thus they will often by returned as NA, and may reflect the maximal capabilities of the underlying device where several output formats are supported by one device.

Most recent devices support semi-transparent colours provided the graphics format does (which PostScript does not). On the other hand, relatively few graphics formats support (fully or semi-) transparent backgrounds: generally the latter is found only in PDF and PNG plots.

Value

A named list with some or all of the following components, any of which may take value NA:

semiTransparency

logical: Does the device support semi-transparent colours?

transparentBackground

character: Does the device support (semi)-transparent backgrounds? Possible values are "no", "fully" (only full transparency) and "semi" (semi-transparent background colours are supported).

rasterImage

character: To what extent does the device support raster images as used by rasterImage and grid.raster? Possible values "no", "yes" and "non-missing" (support only for arrays without any missing values).

capture

logical: Does the current device support raster capture as used by grid.cap?

locator

logical: Does the current device support locator and identify?

events

character: Which events can be generated on this device? Currently this will be a subset of c("MouseDown", "MouseMove", "MouseUp", "Keybd"), but other events may be supported in the future.

See Also

See getGraphicsEvent for details on interactive events.

Examples

dev.capabilities()

grDevices

adjustcolor: Adjust Colors in One or More Directions Conveniently. as.graphicsAnnot: Coerce an Object for Graphics Annotation as.raster: Create a Raster Object axisTicks: Compute Pretty Axis Tick Scales boxplot.stats: Box Plot Statistics bringToTop: Assign Focus to a Window cairo: Cairographics-based SVG, PDF and PostScript Graphics Devices cairoSymbolFont: Specify a Symbol Font check.options: Set Options with Consistency Checks chull: Compute Convex Hull of a Set of Points cm: Unit Transformation col2rgb: Color to RGB Conversion colorRamp: Color interpolation colors: Color Names contourLines: Calculate Contour Lines convertColor: Convert between Colour Spaces densCols: Colors for Smooth Density Plots dev: Control Multiple Devices dev2: Copy Graphics Between Multiple Devices dev2bitmap: Graphics Device for Bitmap Files via Ghostscript devAskNewPage: Prompt before New Page dev.capabilities: Query Capabilities of the Current Graphics Device dev.capture: Capture device output as a raster image dev.flush: Hold or Flush Output on an On-Screen Graphics Device. Devices: List of Graphical Devices dev.interactive: Is the Current Graphics Device Interactive? dev.size: Find Size of Device Surface embedFonts: Embed Fonts in PostScript and PDF extendrange: Extend a Numerical Range by a Small Percentage getGraphicsEvent: Wait for a mouse or keyboard event from a graphics window gray: Gray Level Specification gray.colors: Gray Color Palette grDevices-package: The R Graphics Devices and Support for Colours and Fonts grSoftVersion: Report Versions of Graphics Software hcl: HCL Color Specification Hershey: Hershey Vector Fonts in R hsv: HSV Color Specification Japanese: Japanese characters in R make.rgb: Create colour spaces msgWindow: Manipulate a Window n2mfrow: Compute Default 'mfrow' From Number of Plots nclass: Compute the Number of Classes for a Histogram palette: Set or View the Graphics Palette palettes: Color Palettes pdf: PDF Graphics Device pdf.options: Auxiliary Function to Set/View Defaults for Arguments of pdf pictex: A PicTeX Graphics Driver plotmath: Mathematical Annotation in R postscript: PostScript Graphics postscriptFonts: PostScript and PDF Font Families pretty.Date: Pretty Breakpoints for Date-Time Classes ps.options: Auxiliary Function to Set/View Defaults for Arguments of... quartz: macOS Quartz Device quartzFonts: Quartz Fonts Setup recordGraphics: Record Graphics Operations recordplot: Record and Replay Plots rgb: RGB Color Specification rgb2hsv: RGB to HSV Conversion trans3d: 3D to 2D Transformation for Perspective Plots Type1Font: Type 1 and CID Fonts unix/png: BMP, JPEG, PNG and TIFF graphics devices unix/savePlot: Save Cairo X11 Plot to File windows: Windows Graphics Devices windowsFonts: Windows Fonts windows.options: Auxiliary Function to Set/View Defaults for Arguments of... windows/png: BMP, JPEG, PNG and TIFF graphics devices windows/savePlot: Save Windows Plot to a File x11: X Window System Graphics (X11) x11Fonts: X11 Fonts xfig: XFig Graphics Device xy.coords: Extracting Plotting Structures xyTable: Multiplicities of (x,y) Points, e.g., for a Sunflower Plot xyz.coords: Extracting Plotting Structures

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