The diagrams-svg package

[Tags: bsd3, library]

This package provides a modular backend for rendering diagrams created with the diagrams EDSL using SVG. It uses blaze-svg to be a fast, pure-Haskell backend.

More documentation: Github README :

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Versions0.3, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.7, 0.6,, 0.7, 0.8,,, 1.0, 1.0.1,,,, 1.0.2,, 1.1,,,,,, 1.3, 1.3.1,,,,,,,,, (info)
Change logCHANGES.markdown
Dependenciesbase (>=4.3 && <4.7), blaze-svg (>=0.3.3), bytestring (>=0.9 && <1.0), cmdargs (>=0.6 && <0.11), colour, diagrams-core (==0.6.*), diagrams-lib (==0.6.*), directory, filepath, monoid-extras (==0.2.*), mtl (>=1 && <2.2), old-time, process, split (>=0.1.2 && <0.3), time, unix (>=2.4 && <2.7), vector-space (>=0.7 && <0.9) [details]
AuthorFelipe Lessa, Deepak Jois
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Source repositoryhead: git clone
UploadedWed Dec 12 02:51:47 UTC 2012 by BrentYorgey
DistributionsDebian:, LTSHaskell:, NixOS:, Stackage:
Downloads12582 total (206 in last 30 days)
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StatusDocs uploaded by user
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For package maintainers and hackage trustees

Readme for diagrams-svg-0.6

Build Status

diagrams-svg is a an SVG backend for diagrams. Diagrams is a powerful, flexible, declarative domain-specific language for creating vector graphics, using the Haskell programming language.

diagrams-svg is a work in progress, and some features are not implemented yet. However, it is functional enough that hs-logo uses it. Check out the issues page to get an idea of the features that are missing.


cabal update && cabal install diagrams-svg


A simple example that uses diagrams-svg to draw a square.

import Diagrams.Prelude
import Diagrams.Backend.SVG.CmdLine

b1 = square 20 # lw 0.002

main = defaultMain (pad 1.1 b1)

Save this to file named Square.hs and compile this program:

ghc --make Square.hs

This will generate an executable which, when run produces an SVG file. Run the executable with the --help option to find out more about how to call it.

$ ./Square --help
Command-line diagram generation.

Square [OPTIONS]

Common flags:
  -w --width=INT    Desired width of the output image
  -h --height=INT   Desired height of the output image
  -o --output=FILE  Output file
  -? --help         Display help message
  -V --version      Print version information

You must pass an output file name with a .svg extension to generate the SVG file.

$ ./Square -o square.svg

The command above generates the SVG file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
<svg xmlns="" xmlns:xlink="" version="1.1" width="22.0" height="22.0" viewBox="0 0 22 22">
    <g stroke="rgb(0,0,0)" stroke-opacity="1.0" fill="rgb(0,0,0)" fill-opacity="0.0" stroke-width="2.0e-3">
       <path d="M 21.0,21.0 l -2.220446049250313e-15,-20.0 h -20.0 l -2.220446049250313e-15,20.0 Z" />

Other Backends for Diagrams