From: "Bermejo, Rodrigo" <rodrigo.bermejo@...>
Date: 2003-10-04T03:33:52+09:00
Subject: Re: Looking for a charting library in Ruby...

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Hi Tom,

Tom Copeland wrote:

>...searching the RAA came up with ruby-gdchart:
>
>http://raa.ruby-lang.org/list.rhtml?name=ruby-gdchart
>
>Is this what folks are using?
>

I have been using it for a while and it has fit all  my requirements.
I have created my own class to save some typing.(Attached).

Then  you can do something like this:

require 'graph'
def graph_txt(txtfile,labelcolumn,datacolumn,delimeter=" ")

     

     data=Array.new

     labels=Array.new

     File.new(txtfile).each do |lines| 

         lines.split("\n").each do |line| 

            data << line.split(delimeter)[datacolumn] 

            labels << line.split(delimeter)[labelcolumn]

         end   

     end   

     data.map! {|x| x.to_i }

   

     g=Graphs.new 

                           options={  

                                           "title"  => "Time",

                                           "type" => "BAR3D",

                                           "name"  =>  "1",

                                           "data"=> data,

                                           "labels"=> labels,

                                           "ytitle"=> "Y",

                                           "xtitle"=> "X",

                                           "dir"   =>"/home/rbermejo",

                                           "xlabel_spacing" => 0

                                       }

                      

                 g.create(options)

 end

 

 graph_txt("txtfile",0,1)





-rodrigo
-----------------
$ ls /usr/bin
ls
ruby
$
----------------

>
>http://ai-app-prog.rubyforge.org/
>
>Thanks,
>
>tom
>  
>

 




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#!/usr/bin/ruby

 class Graphs
         
        require 'GDChart'  

        def initialize
           @options=" "
           self.default
        end   
        
        def default
            if File.exist?("graph_default.rb")
              require 'graph_default'     
            else   
              @graph_default=Hash.new
              @graph_default["bgcolor"]    =  0x3a3a3a
              @graph_default["numset"]     =  1
              @graph_default["bgimage"]   =  "/icons/graphbg.gif"
              @graph_default["dir"]  =  "./"
              @graph_default["file"]  =  "testing.png"
              @graph_default["extcolor"]   =  [  0xc6c0c0, 0x466387   ]
              @graph_default["gridcolor"]  =  0x466387 
              @graph_default["labels"]    =  [ ]
              @graph_default["titlecolor"]  =  0xc6c0c0
              @graph_default["linecolor"]   =  0xefe413
              @graph_default["title"]  =  "graph"
              @graph_default["xlabel_spacing"]=   0
              @graph_default["xsize"]  =  350
              @graph_default["xtitle"]  =  ""
              @graph_default["ysize"]   =  350
              @graph_default["ytitlecolor"]   =  0xc6c0c0
              @graph_default["xtitlecolor"]   =  0xc6c0c0
              @graph_default["ytitle"]        =  "y"
              end
        end   
      
              
       def setvalue(var)
          
           if not @options.has_key?(var)
              @options[var]=@graph_default[var]
           end

           return @options[var]
           
       end       
               
           
          
       def create(options)
                
                  @options=options
                  @options.each {|k,v|  eval " \@#{k}= v "}  
               
                   begin
                     
                      gdc = GDChart.new
                     
                      #############
                      #   TITLE   #
                      #############
                      gdc.title_size = GDChart::MEDBOLD
                      gdc.title   = setvalue("title")
                      gdc.ytitle =  setvalue("ytitle")
                      gdc.xtitle =  setvalue("xtitle")
                      gdc.TitleColor  =  setvalue("titlecolor")
                      gdc.YTitleColor =  setvalue("ytitlecolor")
                      
                      #############
                      #   BODY    #
                      #############
                      gdc.ExtColor  =  setvalue("extcolor")
                      gdc.LineColor  =  setvalue("linecolor")
                      gdc.BGImage  =  setvalue("bgimage")
                      gdc.BGColor   =  setvalue("bgcolor")
                      gdc.GridColor  =  setvalue("gridcolor")
                      gdc.xlabel_spacing =  setvalue("xlabel_spacing")
                      gdc.bar_width = setvalue("bar_width")
                      gdc.border      = setvalue("border")
                      gdc.ylabel_fmt= setvalue("ylabel_fmt")          

                      #############
                      #   FILE    #
                      #############                                          
                     @ysize=setvalue("ysize")
                     @xsize=setvalue("xsize")
                     @name=setvalue("name")
                     @dir=setvalue("dir")
                     @file=File.open "#{@dir}/#{@name}.png" , "w"
                      #############
                      #   DATA    #
                      #############        
                     @numset=setvalue("numset")

                     ############
                     #   MAIN   #
                     ############
                     if @type =~ /pie/i then 
                       eval "  gdc.out_graph(\@ysize,\@xsize, \@file, GDChartPie::#{@type}, \@data.length, \@labels,\@numset, \@data) "
                    else
                      eval "  gdc.out_graph(\@ysize,\@xsize, \@file, GDChart::#{@type}, \@data.length/@numset, \@labels,\@numset, \@data,\@data) "
                    end                   
               
                 rescue Exception => error 
                       print "create error:#{error}\n"
                      
                  end 
                    
        end            



end



   



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