# Ruby Graphing/chart libraries? **URL:** \ **Category:** ruby-talk\ **Created:** [2 December 2004 00:33 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084 "2004-12-02T00:33:14Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Chris\_Williams2](https://avatars.discourse-cdn.com/v4/letter/c/48db29/32.png) [@Chris\_Williams2](https://rubytalk.org/u/Chris_Williams2)\ **Post date:** [2 December 2004 00:33 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/1 "2004-12-02T00:33:14Z")
Hi all,             I'm trying to set up a Ruby/Rails app at work and for a great deal of the pages I'll need to display graphs and charts of data. Does anyone know of a simple package that can create bar, x-y plot, pie, and other basic charts in a usable format? (I'm speaking gif, jpg, png. I like the looks of the SVG::Graph library, but SVG support doesn't come with any of the browsers yet.) Thanks, Chris ---
**Author:** ![Stoyan\_Zhekov](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@Stoyan\_Zhekov](https://rubytalk.org/u/Stoyan_Zhekov)\ **Post date:** [2 December 2004 01:16 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/2 "2004-12-02T01:16:14Z")
We are using ruby-gd [[http://raa.ruby-lang.org/project/ruby-gd/](http://raa.ruby-lang.org/project/ruby-gd/) ] and ruby-gdchart [[http://raa.ruby-lang.org/project/gdchart/](http://raa.ruby-lang.org/project/gdchart/) ] . ruby-gd is wrapper arroung lingd [[Short Term Loans | Boutell.co.uk | Borrow £50 - £2500 Instantly](http://www.boutell.com/gd/) ] and ruby-gdchart is wrapper around gd specially for graphs (bar, pie etc.). Pretty easy to use. Just not enough docs and i couldnt make it run on windows (maybe will work with cygwin, i tryed the mingw). Sample code for cgi: require "cgi" require "GD" require 'GDChart' cgi = CGI.new print cgi.header("type"=\>"image/png") gdc = GDChart.new gdc.image\_type = GDChart::PNG gdc.title = "The Title" gdc.title\_size = GDChart::GIANT gdc.xtitle = "X-axis" gdc.ytitle = "Y-axis" gdc.ExtColor = [0xFF3399, 0xFF9933, 0xFFEE33, 0x33FF33, 0x33FFCC, 0x9966FF] gdc.BGColor = 0xFFFFFF data = [7, 11, 13, 17, 19, 23] label = ['Value X','Value Y'] gdc.out\_graph(600, 400, $stdout, GDChart::BAR3D, data.length, label, 1, data) > **···** > > On Thu, 2 Dec 2004 09:33:14 +0900, Chris Williams \ wrote: > > > Does anyone know of a simple package that can create bar, x-y plot, pie, > > and other basic charts in a usable format? (I'm speaking gif, jpg, png. ---
**Author:** ![George5](https://avatars.discourse-cdn.com/v4/letter/g/7c8e57/32.png) [@George5](https://rubytalk.org/u/George5)\ **Post date:** [2 December 2004 13:20 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/3 "2004-12-02T13:20:53Z")
Chris Williams wrote: > Hi all, >             I'm trying to set up a Ruby/Rails app at work and for a > great deal of the pages I'll need to display graphs and charts of data. > Does anyone know of a simple package that can create bar, x-y plot, pie, > and other basic charts in a usable format? (I'm speaking gif, jpg, png. > I like the looks of the SVG::Graph library, but SVG support doesn't come > with any of the browsers yet.) I've used gnuplot for this: [http://ntecs.de/wee/ehf](http://ntecs.de/wee/ehf) ([http://www.ntecs.de/blog/Blog/FirstAppUsingWee.rdoc\](http://www.ntecs.de/blog/Blog/FirstAppUsingWee.rdoc%5C)) Below is the code snippet that generates the diagram using gnuplot. Two other options are:    gd-graph: [http://www.ntecs.de/viewcvs/viewcvs/gd-graph/](http://www.ntecs.de/viewcvs/viewcvs/gd-graph/)    ploticus: [http://www.ntecs.de/viewcvs/viewcvs/ruby-ploticus/](http://www.ntecs.de/viewcvs/viewcvs/ruby-ploticus/) Regards,    Michael > **···** > > ############################################### >    g = IO.popen("gnuplot", "w+") > >    points1 = >    points2 = > >    for i in 1..600 >      points1 \<\< [i, vg[i]] >      points2 \<\< [i, vd[i]] >    end > >    g.puts "set terminal png transparent small size 640,480 " + >    "xffffff x000000 x404040 " + >    "x0ff00f xf00f0f x66cdaa xcdb5cd " + >    "xadd8e6 x0000ff xdda0dd x9500d3" > >    g.puts "set autoscale y" >    g.puts "set xrange [0:600]" >    g.puts "set xlabel 'Monate'" >    g.puts "set ylabel 'Euro'" >    g.puts "set grid" >    g.puts "set noborder" > >    s = (["'1' 1"] + (60..600).to\_enum(:step, 60).map {|i| "'#{i}' #{i}" }).join(",") >    g.puts "set xtics (#{s})" >    g.puts "set key on below" > >    g.puts "plot '-' title 'Guthaben' with filledcurves, '-' title 'Darlehen' with filledcurves" >    g.puts points1.map{|v| v.join(" ")}.join("\n") >    g.puts "\ne\n" >    g.puts points2.map{|v| v.join(" ")}.join("\n") >    g.puts "\ne" > >    g.close\_write >    png = g.read >    File.open('test.png', 'w+') {|f| f \<\< png} ---
**Author:** ![Chris\_Williams2](https://avatars.discourse-cdn.com/v4/letter/c/48db29/32.png) [@Chris\_Williams2](https://rubytalk.org/u/Chris_Williams2)\ **Post date:** [2 December 2004 01:36 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/4 "2004-12-02T01:36:34Z")
> \> Does anyone know of a simple package that can create bar, x-y plot, pie, > \> and other basic charts in a usable format? (I'm speaking gif, jpg, png. > We are using ruby-gd [[http://raa.ruby-lang.org/project/ruby-gd/](http://raa.ruby-lang.org/project/ruby-gd/) ] and > ruby-gdchart > [[http://raa.ruby-lang.org/project/gdchart/](http://raa.ruby-lang.org/project/gdchart/) ] . ruby-gd is wrapper > arroung lingd > [[http://www.boutell.com/gd/](http://www.boutell.com/gd/) ] and ruby-gdchart is wrapper around gd > specially for graphs > (bar, pie etc.). Pretty easy to use. Just not enough docs and i couldnt > make it > run on windows (maybe will work with cygwin, i tryed the mingw). I suppose I should add that I need it to work on Windows... Chris > **···** > > > \ wrote: ---
**Author:** ![Sam\_Goldman](https://avatars.discourse-cdn.com/v4/letter/s/ba8739/32.png) [@Sam\_Goldman](https://rubytalk.org/u/Sam_Goldman)\ **Post date:** [2 December 2004 01:41 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/5 "2004-12-02T01:41:49Z")
I haven't tried SVG::Graph, nor do I have a Windows machine on which to test it, but you do! (I would also argue that SVG \_is\_ a usable format, though perhaps many would disagree.) [http://www.germane-software.com/software/SVG/SVG::Graph/](http://www.germane-software.com/software/SVG/SVG::Graph/) - Sam ---
**Author:** ![gabriele\_renzi](https://avatars.discourse-cdn.com/v4/letter/g/e19b73/32.png) [@gabriele\_renzi](https://rubytalk.org/u/gabriele_renzi)\ **Post date:** [2 December 2004 09:12 UTC](https://rubytalk.org/t/ruby-graphing-chart-libraries/15084/6 "2004-12-02T09:12:43Z")
Sam Goldman ha scritto: > I haven't tried SVG::Graph, nor do I have a Windows machine on which to test it, but you do! (I would also argue that SVG \_is\_ a usable format, though perhaps many would disagree.) > > [SVG::Graph](http://www.germane-software.com/software/SVG/SVG::Graph/) works like a charm, and it generates really nice graphs with little code.