[R] strip levels

[Michael Dewey]

See inline

On 06/04/2015 15:39, Sarah Goslee wrote:
> Hi,
>
> On Mon, Apr 6, 2015 at 7:44 AM, Christine Lee via R-help
> <r-help at r-project.org> wrote:
>> To whom it may help,
>>
>> I am new to R.
>>
>> I have been tring to have a lattice plot in two strip levels: 4 stations in 2 years.
>>
>> I type in:
>>
>> histogram(~Raw.no10$Width|Raw.no10$Station*Raw.no10$Year, data=Raw.no10, layout=c(4,2),nin=30,xlab="Prosomal Width (mm)", strip=strip.custom(bg='white'),ylab="Frequencies",tick=-1,col='grey',as.table=TRUE)
>
> In both examples, you're mis-stating the data. Given the data
> argument, you do not need to restate the data source.
>
> histogram(~Width | Station*Raw.no10$Year, data=Raw.no10,

I think Sarah meant to type Station * Year and not as above

> layout=c(4,2),nin=30,xlab="Prosomal Width (mm)",
> strip=strip.custom(bg='white'),ylab="Frequencies",tick=-1,col='grey',as.table=TRUE)
>
> If that doesn't solve your problem, then please use
> dput(head(Raw.no10), 20) to provide some example data, or create fake
> data of the same structure.
>
> Without a reproducible example that includes some sample data (fake is
> fine), the code you used, and some clear idea of what output you
> expect, it's impossible to figure out how to help you. Here are some
> suggestions for creating a good reproducible example:
> http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
>
>
>> The second level, i.e. Year, showed as "Raw.no10$Year" in the each of the lattice plot, instead of its respective year, such as "2002" and "2014".
>>
>> I changed to the following programme language, therefore:
>>
>> histogram(~Raw.no10$Width|Raw.no10$Station*Raw.no10$Year, data=Raw.no10, layout=c(4,2),nin=30,xlab="Prosomal Width (mm)", strip=strip.custom(bg='white',var.name=c("2002","2014")),ylab="Frequencies",tick=-1,col='grey',as.table=TRUE)
>>
>> in order to specify the variable names of the strip.
>>
>> Instead of showing "Raw.no10$Year", each of the lattice plot states "2014"!  They should have 4 plots showing "2002" and another 4 showing "2014".
>>
>> Could any one help indicating what has gone wrong?
>>
>> I am really helpless and frustrated now.  T_T
>>
>> Regards,
>> Christine
>
>

-- 
Michael
http://www.dewey.myzen.co.uk/home.html