line chart

A large collection of Gnuplot examples

I needed to use Gnuplot a little bit over the last few days, mostly to create 2D line charts, and these are my brief notes on how to get started with Gnuplot. If you haven’t used it before, it’s a pretty amazing tool.

Jumping right in ...

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Installing gnuplot

Use MacPorts or Homebrew to install Gnuplot on Mac OS X systems:

port install gnuplot
brew install gnuplot
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Sample data files

My examples use the following 2-column and 4-column data files:

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Free PHP charts and graphs alvin September 1, 2011 - 8:14pm

As I embark on two new PHP web applications that have a lot of charting and graphing needs, I've started to dig into the PHP charts and graphs world. I'm pleased to say there are several nice, free PHP charts and graphs tools available, and several commercial PHP charting/graphing tools as well. Here's my quick review of the current PHP charts and graphs tools.

Free Flash charts and graphs (PHP charts) alvin December 9, 2010 - 8:46pm

Free PHP Flash charts FAQ: What do you know about Flash charts (Flash charts and graphs tools that can be used in PHP applications), especially free Flash charting and graphing tools (or interactive charts and graphs)?

As I keep digging into free PHP charts and graphs tools, I've found that several of these tools special in "Flash charts", typically interactive Flash charts. Here's a quick review of what I've learned about these Flash charts.

Free PHP Flash charts and graphs tools (Open Source)

Open Flash Chart Project