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I am aware that Leland Wikinson's ideas, as exposed in his book "The Grammar of Graphics" underlie ggplot2 implementation in R.
But are there other implementations of the same ideas in other statistical packages (SAS or other)?
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A grammar of graphics is a tool that enables us to concisely describe the components of a graphic. Such a grammar… vita.had.co.nz. Hadley's layered grammar of graphics uses several layered components to describe any graphic or visualization.
The grammar of graphics is implemented in R using the ggplot2 package. Essentially we develop plots by layering graphical elements on top of each other and use aesthetic mappings to refine our visualizations.
ggplot2 is an R package for producing statistical, or data, graphics. Unlike most other graphics packages, ggplot2 has an underlying grammar, based on the Grammar of Graphics,1 that allows you to compose graphs by combining independent components. This makes ggplot2 powerful.
In SPSS, the Chart Builder was built upon the same foundation. I could be wrong, but I think SPSS implemented it as "GPL." IMHO, Hadley's ggplot2 is much easier to learn and there are mounds of examples online; I haven't seen many examples of graphics built with GPL.
Not to mention, R can be obtained for the price of free.
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