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GV_TCL

GV_TCL

Section: C Library Functions (3) Updated: 02 March 2010
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NAME

gv_tcl - graph manipulation in tcl

 

SYNOPSIS

#!/usr/bin/tclsh
package require gv

 

USAGE

Requires tcl8.3 or later.

 

INTRODUCTION

gv_tcl is a dynamically loaded extension for tcl that provides access to the graph facilities of graphviz.

 

COMMANDS

New graphs

New empty graph

<graph_handle> gv::graph <name>
<graph_handle> gv::digraph <name>
<graph_handle> gv::strictgraph <name>
<graph_handle> gv::strictdigraph <name>
New graph from a dot-syntax string or file

<graph_handle> gv::readstring <string>
<graph_handle> gv::read <filename>
<graph_handle> gv::read <channel>
Add new subgraph to existing graph

<graph_handle> gv::graph <graph_handle> <name>
New nodes

Add new node to existing graph

<node_handle> gv::node <graph_handle> <name>
New edges

Add new edge between existing nodes

<edge_handle> gv::edge <tail_node_handle> <head_node_handle>
Add a new edge between an existing tail node, and a named head node which will be induced in the graph if it doesn't already exist

<edge_handle> gv::edge <tail_node_handle> <head_name>
Add a new edge between an existing head node, and a named tail node which will be induced in the graph if it doesn't already exist

<edge_handle> gv::edge <tail_name> <head_node_handle>
Add a new edge between named tail and head nodes which will be induced in the graph if they don't already exist

<edge_handle> gv::edge <graph_handle> <tail_name> <head_name>
Setting attribute values

Set value of named attribute of graph/node/edge - creating attribute if necessary

<string> gv::setv <graph_handle> <attr_name> <attr_value>
<string> gv::setv <node_handle> <attr_name> <attr_value>
<string> gv::setv <edge_handle> <attr_name> <attr_value>
Set value of existing attribute of graph/node/edge (using attribute handle)

<string> gv::setv <graph_handle> <attr_handle> <attr_value>
<string> gv::setv <node_handle> <attr_handle> <attr_value>
<string> gv::setv <edge_handle> <attr_handle> <attr_value>
Getting attribute values

Get value of named attribute of graph/node/edge

<string> gv::getv <graph_handle> <attr_name>
<string> gv::getv <node_handle> <attr_name>
<string> gv::getv <edge_handle> <attr_name>
Get value of attribute of graph/node/edge (using attribute handle)

<string> gv::getv <graph_handle> <attr_handle>
<string> gv::getv <node_handle> <attr_handle>
<string> gv::getv <edge_handle> <attr_handle>
Obtain names from handles

<string> gv::nameof <graph_handle>
<string> gv::nameof <node_handle>
<string> gv::nameof <attr_handle>
Find handles from names

<graph_handle> gv::findsubg <graph_handle> <name>
<node_handle> gv::findnode <graph_handle> <name>
<edge_handle> gv::findedge <tail_node_handle> <head_node_handle>
<attr_handle> gv::findattr <graph_handle> <name>
<attr_handle> gv::findattr <node_handle> <name>
<attr_handle> gv::findattr <edge_handle> <name>
Misc graph navigators returning handles

<node_handle> gv::headof <edge_handle>
<node_handle> gv::tailof <edge_handle>
<graph_handle> gv::graphof <graph_handle>
<graph_handle> gv::graphof <edge_handle>
<graph_handle> gv::graphof <node_handle>
<graph_handle> gv::rootof <graph_handle>
Obtain handles of proto node/edge for setting default attribute values

<node_handle> gv::protonode <graph_handle>
<edge_handle> gv::protoedge <graph_handle>
Iterators

Iteration termination tests

<boolean_string> gv::ok <graph_handle>
<boolean_string> gv::ok <node_handle>
<boolean_string> gv::ok <edge_handle>
<boolean_string> gv::ok <attr_handle>
Iterate over subgraphs of a graph

<graph_handle> gv::firstsubg <graph_handle>
<graph_handle> gv::nextsubg <graph_handle> <subgraph_handle>
Iterate over supergraphs of a graph (obscure and rarely useful)

<graph_handle> gv::firstsupg <graph_handle>
<graph_handle> gv::nextsupg <graph_handle> <subgraph_handle>
Iterate over edges of a graph

<edge_handle> gv::firstedge <graph_handle>
<edge_handle> gv::nextedge <graph_handle> <edge_handle>
Iterate over outedges of a graph

<edge_handle> gv::firstout <graph_handle>
<edge_handle> gv::nextout <graph_handle> <edge_handle>
Iterate over edges of a node

<edge_handle> gv::firstedge <node_handle>
<edge_handle> gv::nextedge <node_handle> <edge_handle>
Iterate over out-edges of a node

<edge_handle> gv::firstout <node_handle>
<edge_handle> gv::nextout <node_handle> <edge_handle>
Iterate over head nodes reachable from out-edges of a node

<node_handle> gv::firsthead <node_handle>
<node_handle> gv::nexthead <node_handle> <head_node_handle>
Iterate over in-edges of a graph

<edge_handle> gv::firstin <graph_handle>
<edge_handle> gv::nextin <node_handle> <edge_handle>
Iterate over in-edges of a node

<edge_handle> gv::firstin <node_handle>
<edge_handle> gv::nextin <graph_handle> <edge_handle>
Iterate over tail nodes reachable from in-edges of a node

<node_handle> gv::firsttail <node_handle>
<node_handle> gv::nexttail <node_handle> <tail_node_handle>
Iterate over nodes of a graph

<node_handle> gv::firstnode <graph_handle>
<node_handle> gv::nextnode <graph_handle> <node_handle>
Iterate over nodes of an edge

<node_handle> gv::firstnode <edge_handle>
<node_handle> gv::nextnode <edge_handle> <node_handle>
Iterate over attributes of a graph

<attr_handle> gv::firstattr <graph_handle>
<attr_handle> gv::nextattr <graph_handle> <attr_handle>
Iterate over attributes of an edge

<attr_handle> gv::firstattr <edge_handle>
<attr_handle> gv::nextattr <edge_handle> <attr_handle>
Iterate over attributes of a node

<attr_handle> gv::firstattr <node_handle>
<attr_handle> gv::nextattr <node_handle> <attr_handle>
Remove graph objects

<boolean_string> gv::rm <graph_handle>
<boolean_string> gv::rm <node_handle>
<boolean_string> gv::rm <edge_handle>
Layout

Annotate a graph with layout attributes and values using a specific layout engine

<boolean_string> gv::layout <graph_handle> <engine>
Render

Render a layout into attributes of the graph

<boolean_string> gv::render <graph_handle>
Render a layout in a specific format

<boolean_string> gv::render <graph_handle> <format>
<boolean_string> gv::render <graph_handle> <format> <filename>
<boolean_string> gv::render <graph_handle> <format> <channel>
<string> gv::renderdata <graph_handle> <format>
Writing graph back to file

<boolean_string> gv::write <graph_handle> <filename>
<boolean_string> gv::write <graph_handle> <channel>

 

KEYWORDS

graph, dot, neato, fdp, circo, twopi, tcl.


 

Index

NAME
SYNOPSIS
USAGE
INTRODUCTION
COMMANDS
KEYWORDS

This document was created by man2html, using the manual pages.
Time: 22:37:36 GMT, April 16, 2011