graphviz ( graph path format layout -- )
Rendering Graphviz output

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graphviz* ( graph path format -- )

Vocabulary
graphviz.render

Inputs

graph	a graph
path	a pathname string
format	a string
layout	a string

Outputs
None

Word description
Translates graph into DOT code and invokes Graphviz on the result.

path is the location where you want to save your output, without a file extension (Graphviz will automatically add one based on format).

format is the format of your output (e.g., "png").

layout is the layout engine to use (e.g., "dot").

Essentially, you can think of it as equivalent to running the Graphviz command "dot path -O -T format -K layout". See https://graphviz.org/content/command-line-invocation.

Errors
If the Graphviz process encounters an error, its output will be captured and thrown as an output-process-error by Factor.

Throws an unsupported-encoding error if graph-encoding isn't one of utf8 or latin1.

Examples
To render a graph G using circo and save the output to a PNG file, you could write

G "foo" "png" "circo" graphviz

(assuming circo and PNG are supported by your Graphviz installation). This will save the output to the file foo.png.

See also
graphviz*

Definition

USING: continuations graphviz.dot graphviz.render.private
io.backend io.directories ;

IN: graphviz.render

:: graphviz ( graph path format layout -- )
    path normalize-path :> dot-file [
        graph dot-file ?encoding write-dot
        dot-file format layout try-graphviz-command
    ] [ dot-file ?delete-file ] finally ;