similar to: Charts and Java servers

I''m just getting started with GD2 and have successfully made a few dynamic PNGs. I need to make some fairly detailed line graphs on the fly and I know that GD2 is capable of what I want but I strongly suspect I''m reinventing the wheel badly. Are there gems or other projects that help creating complex charts? I''ve used GDChart in the distant past but I

I hope this day finds you well. I need to generate Spider charts (aka radar charts) , and am using Gruff to do so. How can I show lines and axis numbers on a Spider chart? Here''s what I''m trying to make: http://img.skitch.com/20080925-m573hhdy4n4x6i92s17knjqjeg.jpg How can I have those 0 - 100 numbers, and the concentric cirles in the graph? Joe -- Posted via

Hi- I need to create simple charts on the fly - I had used JFreeChart in the past with inJ2EE apps. Is there any equivalent here for Ruby. My charting needs are simple: just line charts. Also if anyone has done this, pls let me know how I should go about in doing it. Thanks -- Posted via http://www.ruby-forum.com/.

i have a rails applications which can record various tasks and times used to do those tasks within each day in a week, now i want it to have the abbility of displaying the percentage of time spent in each task in a pie chart. can someone please show me the neccesary formatting of data and other steps required for this to be done using

Hi, I want to be able create a pie chart using rails, does anyone know of any plugin''s taht could help me here? Scott -- Posted via http://www.ruby-forum.com/.

Hi all, The Rails book talks about running Rails under Apache, but is there a (relatively) easy way to deploy it to either Tomcat or JBoss? Is the CGI servlet the only option? Thanks, Ken -- Kenneth A. Kousen, Ph.D. President Kousen IT, Inc. <http://www.kousenit.com> http://www.kousenit.com <mailto:ken.kousen@kousenit.com> ken.kousen@kousenit.com

Hi, Has anyone come across a Ruby mathematical expression parser, capable of parsing out token, replacing them with values then executing the mathematical formula? Nothing too heavy, A * (44/12) * ... etc. where A is can be replaced with a value. In Java there are serveral, like JEP, but I''d prefer it we could get a Ruby one now we have moved over to Rails, otherwise we will have to

Has anyone come across this problem... I created some Ruby files in Textmate on my Mac - and everything works fine. However, when I run those files on a Windows machine I get e.g. compile error ./script/../config/../app/views/station/consumption/new.rhtml:2: Invalid char `\002'' in expression ./script/../config/../app/views/station/consumption/new.rhtml:4: parse error, unexpected

Hi, How do I make stacked area graph? For stacked bar graph gruff has seperate class "StackedBar" but I could not find anything as "StackedArea"? Is there any other way? Please let know. Thanks -- Posted via http://www.ruby-forum.com/.

Having jotted down some models, with some inheritence I tried to run some unit tests. After waiting for rake test_units to run I got a rake of errors (if you''ll forgive the play on words). The errors were to do with unknown tables in the tear down stage. The unknown tables corresponded to sub-types where single table inheritence was used. In other words, these tables *shouldn''t*

I am using Gruff to chart 2 sets of data and have run into a problem, the numbers between the two sets are so far apart that the first set appears as a mostly straight line at the top and the second a mostly straight line at the bottom. Is there a way to set the min/max vertical column values so that I can squeeze the data closer together so that there is more ''movement''? If

Hi, I realise that Windows is a poor platform and that Webrick is a development, not production, server. However, we have started seeing this crop up when perfectly simple page to page links are invoked... [2006-03-28 08:32:21] ERROR Errno::ECONNABORTED: Software caused connection abort /usr/lib/ruby/1.8/webrick/httpresponse.rb:324:in `write''

Does anybody know how to create a pie chart in Gruff without percentage but actual numbers? -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To

Hi - I am creating bar and stacked bar charts in Gruff, but the problem I am having is that zero data is showing up as a thin bar. (It also seems to be that way in examples I have seen online where a zero value still shows as a thin bar or slice) It''s not a major issue to see a thin sliver on a plain bar chart, but on my stacked bar chart if I have more than one zero value in a

In a servlet J2EE application, there is an init style method that gets called after that servlet is loaded. Is there something similar within a rails controller context. I am looking for something where I can load and setup a particular object. Also, what about with sessions as well. I would like to call some library when a user session begins and possibly kill that object when the

Hi all, I need to write an application that gets data from a database and plots it on a graph. I am familiar with java and know that I could do it with jfreechart - however I am excited by RoR and would like to write the application with RoR instead. Is it possible to write it in RoR? Chris -- Posted via http://www.ruby-forum.com/.

Hi, for those with experience of Gruff module: suppose I want to send image from server straight to the browser (as example on gruff web site): send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "gruff.png") the server seems sending this binary data ok, but I am having

Hello list, I''m having a problem getting Gruff working with Rails on a Windows XP box. I installed RMagick, then Gruff via the win32 gem, and it seemed to go OK. From irb, I can do the following - require ''rubygems'' ##### This returns ''false'', but seems to work OK - require ''gruff'' ####### Ditto - g = Gruff::Bar.new etc., and I get

I just got this error: uninitialized constant PriceCurf After much head scratching I remembered the Rails plural to singular mapping rules. My table is price_curves, my object is PriceCurve ... whereas I am guessing Rails thinks the singular ought to br PriceCurf ?! I''m sure there is a simple way around this linguistic blunder that doesn''t involve the use of pigeon English.

Well, I''m trying to generate graphs using gruff, but I''m having problemns. I use, require_gem ''gruff'' then when I run g = Gruff::Line.new(475) I get uninitialized constant Gruff ///// c:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:100:in `const_missing''