R help - May 2009 - mosaic plot with two factors and one continous variable

Hello,
my dataset is already aggregated: I have two categorical variables, say
"continent" and "country" and one non-negative metric
variable "population".
Now I would like to produce a mosaic plot which uses "population" to
determine how large each area of the plot is.

In other words, I fail to find out
- how to use the mosaic function of the vcd package without using table,
- or I do not know how to convert my dataset into a table (as.table fails)

As an example, here a simple dataset:

Continent; Country; Population
Europe; France; 65
Europe; Germany; 80
Africa; Algeria; 32
....

Can you help me to get started?

Kind regards,
Karsten.

	[[alternative HTML version deleted]]

On Mon, 4 May 2009, Karsten Weinert wrote:
> Hello,
> my dataset is already aggregated: I have two categorical variables, say
> "continent" and "country" and one non-negative metric
variable "population".
> Now I would like to produce a mosaic plot which uses "population"
to
> determine how large each area of the plot is.
>
> In other words, I fail to find out
> - how to use the mosaic function of the vcd package without using table,
> - or I do not know how to convert my dataset into a table (as.table fails)
>
> As an example, here a simple dataset:
>
> Continent; Country; Population
> Europe; France; 65
> Europe; Germany; 80
> Africa; Algeria; 32
> ....
>
> Can you help me to get started?
You can create the tables by
   xtabs(Population ~ Continent, data = mydata)
etc. which can then be visualized using mosaic() in the usual way.

hth,
Z
> Kind regards,
> Karsten.
>
> 	[[alternative HTML version deleted]]
>
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