The background color must be given in the form 'xrrggbb', where x is the literal character 'x' and 'rrggbb' are the red, green and blue components in hexadecimal. For example, 'x00 00' is green. The speci cation of additional colors other than the background is deprecated.

Examples

set terminal png medium size 640,480 xffffff

Use the medium size built-in non-scaleable, non-rotatable font. Use white (x ) for the non-transparent background.

set terminal png font arial 14 size 800,600

Searches for a scalable font with face name 'arial' and sets the font size to 14pt. Please see fonts (p. 31) for details of how the font search is done.

set terminal png transparent truecolor enhanced

Use 24 bits of color information per pixel, with a transparent background. Use the enhanced text mode to control the layout of strings to be printed.

Pngcairo

The pngcairo terminal device generates output in png. The actual drawing is done via cairo, a 2D graphics library, and pango, a library for laying out and rendering text.

Syntax:

set term pngcairo

{{no}enhanced} {mono|color} {solid|dashed} {{no}transparent} {{no}crop} {background <rgbcolor> {font <font>} {fontscale <scale>}

{linewidth <lw>} {rounded|butt} {dashlength <dl>} {size <XX>{unit},<YY>{unit}}

This terminal supports an enhanced text mode, which allows font and other formatting commands (subscripts, superscripts, etc.) to be embedded in labels and other text strings. The enhanced text mode syntax is shared with other gnuplot terminal types. See enhanced (p. 23) for more details.

The width of all lines in the plot can be modi ed by the factor <lw>.

rounded sets line caps and line joins to be rounded; butt is the default, butt caps and mitered joins.

The default size for the output is 640 x 480 pixels. The size option changes this to whatever the user requests. By default the X and Y sizes are taken to be in pixels, but other units are possible (currently cm and inch). A size given in centimeters or inches will be converted into pixels assuming a resolution of 72 dpi. Screen coordinates always run from 0.0 to 1.0 along the full length of the plot edges as speci ed by the size option.

<font> is in the format "FontFace,FontSize", i.e. the face and the size comma-separated in a single string. FontFace is a usual font face name, such as 'Arial'. If you do not provide FontFace, the pngcairo terminal will use 'Sans'. FontSize is the font size, in points. If you do not provide it, the pngcairo terminal will use a size of 12 points.

For example :

set term pngcairo font "Arial,12"

set term pngcairo font "Arial" # to change the font face only set term pngcairo font ",12" # to change the font size only set term pngcairo font "" # to reset the font name and size

The fonts are retrieved from the usual fonts subsystems. Under Windows, those fonts are to be found and con gured in the entry "Fonts" of the control panel. Under UNIX, they are handled by "fontcon g".