[R] lattice and probem

[Peter Ehlers]

Slight correction below.
(Mother always said I needed to learn to count.)

Peter Ehlers wrote:
> robert-mcfadden at o2.pl wrote:
>> I have a simple chart:
>>    barchart(Counts ~ Purchase | Products , data = my.data, groups = 
>> Model)
>> where Purchase in data has values {0,1,2,3...10}. In a chart xlab 
>> begins with 1 not 0. How to change it?
> 
> I guess that barchart() will coerce Purchase to be a factor with
> levels '1' to '10'. So make it a factor with your choice of
          ^^^^^^^^^^^^
That should be '1' to '11', of course.

  -Peter

> levels:
> 
> PurchaseF <- factor(Purchase, levels = 0:10)
> 
> (or use the scales= argument in barchart())
> 
>  -Peter Ehlers
> 
>>
>> Best,
>> Robert 
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>>
> 

-- 
Peter Ehlers
University of Calgary
403.202.3921