Recommended visualization for hierarchical data
On 01/13/2010 02:46 PM, Rex C. Eastbourne wrote:
On Tue, Jan 12, 2010 at 5:26 PM, Rex C. Eastbourne<rex.eastbourne at gmail.com
wrote:
Let's say I have data in the following schema that describes the number of purchases a company has received from each County in the US: State | County | Purchases --------------------------------------- NJ | Mercer | 550 CA | Orange | 23 .... I would like to visualize what states contribute the most to the overall total, and furthermore within those states, what Counties contribute the most. What are some recommended R visualizations for this type of data? I created a treemap using map.market from the portfolio library, like the following: http://zoonek2.free.fr/UNIX/48_R/g126.png Although this is an attractive visual, I want something that makes it easier to compare the relative sizes of components at a glance (hard with a treemap because rectangles have different aspect ratios). Does anyone have a recommended alternate visualization? Thanks!
Just to clarify: I made up the above example for simplicity's sake to illustrate what I meant by "hierarchical" data. My actual data is not related to maps or geography, so a map-based visualization wouldn't work.
Hi Rex, Have a look at the hierobarp function in the plotrix package. It produces nested bars that begin with the overall value. Jim