[HN Gopher] Creating beautiful charts with JRuby and JFreeChart
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       Creating beautiful charts with JRuby and JFreeChart
        
       Author : headius
       Score  : 29 points
       Date   : 2025-04-30 20:30 UTC (1 days ago)
        
 (HTM) web link (blog.headius.com)
 (TXT) w3m dump (blog.headius.com)
        
       | headius wrote:
       | Why use C, Python, or JavaScript to generate charts for your Ruby
       | applications? Use JRuby and it's so much easier!
        
         | mberning wrote:
         | Thank you for all your work on JRuby. I love it.
        
       | npongratz wrote:
       | > Everyone loves pie!
       | 
       | Oh gosh, no! Count me among those who greatly dislike pie charts
       | in almost every context.
       | 
       | "Almost never use a pie chart for data"
       | 
       | https://theconversation.com/heres-why-you-should-almost-neve...
       | 
       | https://news.ycombinator.com/item?id=38912534
        
       | knowitnone wrote:
       | article complains about a ruby gem(Charty) calling a python
       | library(matplotlib) yet author is running Ruby in Java so they
       | can access some Java library!
        
         | vidarh wrote:
         | I don't even like Java/JVM, and I still think that is more
         | reasonable than running a gem that embeds Python.
        
         | brightball wrote:
         | The Ruby code is already running on the JVM so utilizing the
         | library isn't calling out to another runtime to execute like
         | you normally would have to in order to do something like this.
        
       | dismalaf wrote:
       | https://github.com/ruby-numo/numo-gnuplot
       | 
       | There's always good 'ol Gnuplot and it's many wrappers... This
       | one looks nice.
        
       | tasuki wrote:
       | Wow, the first chart on that web page is really, really ugly. It
       | has these weird 3-d effects that look like from 2001. All it's
       | missing are reflections...
        
         | omneity wrote:
         | I read your comment first and was like it can't be that bad. I
         | then opened the page, scrolled frantically down and boy oh boy
         | were you right.
        
           | specproc wrote:
           | Title needs a correction: Hideous charts with JRuby and
           | JFreeChart.
        
       | brightball wrote:
       | That's really impressive! Not the chart itself, but seeing how
       | easy it is to use any existing Java library from within a Ruby
       | codebase is super cool.
       | 
       | Ruby already has a pretty incredible gem ecosystem but having all
       | things Java available too really adds tremendous utility.
       | 
       | Love JRuby. Thanks for all of the hard work headius!
        
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       (page generated 2025-05-01 23:00 UTC)