[R] Overlapping x axes using Lattice

[Patrick Breheny]

The scales argument in lattice controls the appearance of the axes.  It 
consists of two lists, one for the x axis and one for the y axis.  For 
example:

histogram(~pesti[,1]|pesti[,2]+ 
pesti[,3],scales=list(x=list(at=c(2,6),labels=c("First","Second"))))

This allows you to place the labels wherever you want.

--Patrick


On 05/03/2011 05:49 PM, Andrew McFadden wrote:
> Hi Patrick
>
> The plot is an example ie not the real thing the x axes is a factor and
> cant be numeric ie it is a titre of a laboratory test. If I change the
> aspect ratio or the font size they still do not fit. How do you put
> fewer labels on ie how do you tell R to skip every second label?
>
> Regardes
>
> Andrew McFadden MVS BVSc | Incursion Investigator (animals),
> Investigation and Diagnostic Centre | Biosecurity New Zealand
> Ministry of Agriculture and Forestry | 66 Ward St,  Wallaceville | PO
> Box 40 742 | Upper Hutt | New Zealand
> Telephone: 64-4-894 5611 | Facsimile: 64-4-894 4973| Mobile:
> 027-733-1791 | Web: www.maf.govt.nz
>
>
> -----Original Message-----
> From: Breheny, Patrick [mailto:patrick.breheny at uky.edu]
> Sent: Wednesday, 4 May 2011 9:45 a.m.
> To: Andrew McFadden; r-help at r-project.org
> Subject: [Requires Classification] RE: Overlapping x axes using Lattice
>
> I'm not clear on what you're looking for here.  Your x-axis is numeric,
> why are you converting it to a factor?  If you keep it numeric, the
> labels don't overlap.  Or perhaps you don't want it to be numeric, in
> which case why not just change the aspect ratio of the plot until they
> no longer overlap?  Or change the axis font size?  Or put fewer labels
> on the axis?  There is a finite amount of space on the axis, so you have
> to either make more space, shrink the labels, or draw fewer of them.
>
>
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
> On Behalf Of Andrew McFadden
> Sent: Tuesday, May 03, 2011 5:05 PM
> To: r-help at r-project.org
> Subject: [R] Overlapping x axes using Lattice
>
> Hi R users
>
> I apologise in advance for this question as I suspect it is simple and
> perhaps others have had this problem.
> I am struggling to sort out how to fix the x axes so that the labels
> don't overlap.
>
> I have put the following example together to show my problem.
>
> library(lattice)
>
> titre<- as.factor(rep(c(10999,20999,30999,40999,50999,60999,
> 20000,40000,45000,50000,70000,80000),c(2,2,2,2,1,1,2,2,2,2,1,1)))
> test<-rep(c("BVD","HSD"),c(10,10))
> age<-as.factor(rep(c(1,2,3,4),c(5,5,5,5)))
>
> pesti<-data.frame(titre,test,age)
>
> histogram(~pesti[,1]|pesti[,2]+ pesti[,3]
> ,alternating=TRUE,tick.number=1, stack=TRUE,type = "count",
> xlab="VNT",rot=c(180,180),draw=FALSE)
>
> Thank you in advance.
>
> Andy
>
> Andrew McFadden MVS BVSc
> Incursion Investigator
> Investigation&  Diagnostic Centres - Wallaceville Biosecurity New
> Zealand Ministry of Agriculture and Forestry
>
> Phone 04 894 5600 Fax 04 894 4973 Mobile 029 894 5611 Postal address:
> Investigation and Diagnostic Centre- Wallaceville Box 40742 Ward St
> Upper Hutt
>
>
>
>
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