https://github.com/square/simplerrd

SimpleRRD provides a simple Ruby interface for creating graphs with RRD
https://github.com/square/simplerrd

Last synced: 7 months ago
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SimpleRRD provides a simple Ruby interface for creating graphs with RRD

• Host: GitHub
• URL: https://github.com/square/simplerrd
• Owner: square
• License: mit
• Archived: true
• Created: 2009-09-06T04:38:25.000Z (almost 16 years ago)
• Default Branch: master
• Last Pushed: 2011-07-06T06:44:24.000Z (about 14 years ago)
• Last Synced: 2024-08-07T23:44:36.732Z (11 months ago)
• Language: Ruby
• Homepage: https://github.com/emerose/simplerrd
• Size: 681 KB
• Stars: 21
• Watchers: 4
• Forks: 5
• Open Issues: 1
• Metadata Files:
  • Readme: README.markdown
  • License: LICENSE

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README

        
# simplerrd

SimpleRRD is intended to be a simple way to create pretty, usable graphs

with [RRDTool][rrd] in Ruby. It has a simple DSL that provides a simple

interface to some predefined graph styles, and also models RRDTool's command

syntax with Ruby objects for those who want more control.

[rrd]: http://oss.oetiker.ch/rrdtool/

## Synopsis:

    require 'simplerrd'

    include SimpleRRD

    

    graph = FancyGraph.build do

      title   "Fancy line graph"

    

      width    640

      height   240

      end_at   Time.at(1252107236)

      start_at Time.at(1252107236) - (60*60*60*6)

    

      buffers = data('data/mem/buffers.rrd') # ds_name and cf implied

      free    = data('data/mem/free.rrd')

      cache   = data('data/mem/cache.rrd')

    

      plot buffers, "Used buffers" # pick color by default, set opacity to 50-80%

      plot free,    "Free space  "

      plot cache,   "Cache used  "

    end

    

    graph.generate('fancy_lines.png')

Will produce:

![fancy_lines.png](http://www.emerose.com/files/simplerrd/fancy_lines.png)

and

    graph = FancyGraph.build do

      title   "Fancy stacked graph"

    

      width    640

      height   240

      end_at   Time.at(1252107236)

      start_at Time.at(1252107236) - (60*60*60*6)

    

      buffers = data('data/mem/buffers.rrd') # ds_name and cf implied

      free    = data('data/mem/free.rrd')

      cache   = data('data/mem/cache.rrd')

    

      stack_plot([buffers, "Used buffers"], 

                 [free,    "Free space  "],

                 [cache,   "Cache used  "])

    end

    

    graph.generate('fancy_stack.png')

![fancy_stacked.png](http://www.emerose.com/files/simplerrd/fancy_stack.png)

A real-world example:

![complicated_ping.png](http://www.emerose.com/files/simplerrd/complicated_ping.png)

## More information

For more examples, see the `examples/` directory.  The `create_rrds.rb`

script will create the RRD data files that the examples use.

Unfortunately, beyond the examples, there's not a lot of documetation yet.

The code and specs should be pretty readable, though.

Patches and such are welcome.

## Copyright

Copyright (c) 2009 Sam Quigley. See LICENSE for details.