I need a tool for creating high quality customizable pie charts, then export them to some graphic format (e.g. png).
I need something which allows me to put in some data and which is more customizable than OpenOffice.org.
Not exactly what you asked for, but this may work anyways. Link is to a pie chart wizard.
graphviz
, optionally with one of its GUI wrappers should be able to do anything you need.
The R language can be used to create bar and pie chart graphs. An example extracted from their help page:
> d <- read.table("data/EU-2004.csv", header=TRUE) # read data
> pie(d$seats, # create pie chart with seats column
+ labels=d$abbrev, # use abbrev column for slice labels
+ main="2004 EU Parliament Results\n(Seats by Party)") # create pie chart
Later, they have an example where this sort of output is sent to a jpeg. I didn't see PNG output. It may be available, but worst case, a jpeg can easily be converted to a PNG.
There is one great tool, which is, unfortunately, not so good at creating pie charts, but I cant help mentioning it
It is called gnuplot
Resources are: