[R] hist of dates

[Berton Gunter]

hist.Date is not exported from its namespace. Try RSiteSearch('namespace')
to learn more about this (look for the R News article).

As you saw, hist() will dispatch hist.Date() when it is given a date-time
argument. Read the docs again -- you failed to specify the breaks = ...
argument properly.

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box
 
 

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of 
> herodote at oreka.com
> Sent: Tuesday, October 18, 2005 8:37 AM
> To: r-help
> Subject: [R] hist of dates
> 
> Hi all
> 
> I wish to draw an histogram... with dates but the following 
> append, i don't know where is the problem, help(hist.Date) 
> works and i don't see any usefull information on what i'm 
> doing wrong...
> 
> > hist.Date(dt_cycles)
> Error: couldn't find function "hist.Date"
> > hist.date(dt_cycles)
> Error: couldn't find function "hist.date"
> > cycles
> [1]  7  1  2  5 14  5
> > dt_cycles
>   dates_releves cycles
> 1    2005-07-01      7
> 2    2005-07-04      1
> 3    2005-07-06      2
> 4    2005-07-11      5
> 5    2005-07-25     14
> 6    2005-07-27      5
> > dates_releves<-as.Date(dates_releves)
> > hist(dates_releves,cycles)
> Error in hist.Date(dates_releves, cycles) :
>         invalid specification of 'breaks'
> > hist(dates_releves~cycles)
> Error in hist.default(dates_releves ~ cycles) :
>         'x' must be numeric
> >
> 
> Any ideas would be great...
> thks
> guillaume.
> 
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