[R] Retaining X axis labels when combining lattice graphs

Bevan bevan.ernst at gmail.com
Wed Oct 17 21:54:09 CEST 2012


I am attempting to create a plot that includes boxplots of the response of a
variable (a0) to changes in two factors as two vertical panels (data set
pasted at end and included as attachment, though should not be necessary). 
I am able to combine the two plots using the c.trellis function in
latticeExtra, which I then update to include a title and any other desired
changes,  but cannot determine how to include a label for the x axis in the
top plot.  

##habitat amount graph
a0.Habitat<-bwplot(a0~Habitat.Amt, data =PCB.hab.dist.paramaters.sub, 
    par.settings = list(plot.symbol = list(pch = 2, col =
"black"),col=1,box.umbrella=list(lty=1, col="black"),
      box.rectangle=list(lty=1, col="black")),
    ylab=list("Asymptote (a)",cex=1.5), 
    xlab=list("Habitat Amount (% of Landscape)", cex=1.5))

##patch graph
a0.Patches<-bwplot(a0~Patches, data =PCB.hab.dist.paramaters.sub,
   par.settings = list(plot.symbol = list(pch = 2, col =
"black"),col=1,box.umbrella=list(lty=1, col="black"),
      box.rectangle=list(lty=1, col="black")),
    ylab=list("Asymptote (a)",cex=1.5), 
    xlab=list("Number of Habitat Patches", cex=1.5))

####combine two graphs
combined.a0<-c( "Response_to_Fragmentation"=a0.Patches,
"Response_to_Habitat_Amount"=a0.Habitat, layout=c(1,2), x.same=FALSE)

###update
update(combined.a0, main="TL Landscape",
scales=list(y=list(alternating=FALSE),x=list(alternating=TRUE )))

This feels like it shoull have a really simple answer but I have been unable
to find any solutions on this or other R help forums to this problem. I have
attempted to not define the xlab when the initial plots are drawn and
specify it at the update step, but this leads to the labels being spread
across the bottom, I assume since the Update funtion is working on the plot
object as a single panel.  Using xlab.top to put the lable above the upper
graph looks odd.

###attempt to specify  2 labels with xlab
update(combined.a0, main="TL Landscape",
scales=list(y=list(alternating=FALSE),x=list(alternating=TRUE) ),
xlab=c("Habitat Amount (% of Landscape)", "Patches"))


 There are plenty of discussion regarding how to manipulate the scale that
axis are drawn at, which is how I arrived at combining plots using
latticeExtra as opposed to drawing the two plots together with the extended
lattice interface which had somw quiriky behaviour in ordering factor levels
across the x axis.

bwplot(a0~(Patches)+(Habitat.Amt),  outer=TRUE, 
data=PCB.hab.dist.paramaters.sub, 
 par.settings = list(plot.symbol = list(pch = 2, col = "black"),col=1,
  box.umbrella=list(lty=1, col="black"),box.rectangle=list(lty=1,
col="black")),
  ylab=list("Asymptote (a)",cex=1.5), 
  xlab=c("Hab", "Patches"), layout=c(1,2),scales=list(relation="free"  ))

Any help would how I could either specify for the Xaxis labels of both
graphs to be included when combined, or ways to specify seperate axis labels
after combination would be extremely helpful.  
Thanks for your time.


           a0          b0           c0 Index Distribution REP Habitat.Amt
Patches
1  0.04914389 -0.86892828 0.0003944847   PCB    2 Patches   1           5      
2
2  0.09828646 -0.86809873 0.0003945627   PCB    2 Patches   2          10      
2
3  0.14743004 -0.86819141 0.0003945485   PCB    2 Patches   3          15      
2
4  0.19650279 -0.87080033 0.0004640310   PCB    2 Patches   4          20      
2
5  0.24562863 -0.87083379 0.0004640277   PCB    2 Patches   5          25      
2
6  0.29475427 -0.87079976 0.0004640311   PCB    2 Patches   6          30      
2
7  0.34321628 -0.88677178 0.0005741337   PCB    2 Patches   7          35      
2
8  0.39224708 -0.88675509 0.0005741361   PCB    2 Patches   8          40      
2
9  0.43964930 -0.91339697 0.0007836726   PCB    2 Patches   9          45      
2
10 0.48849916 -0.91338693 0.0007836736   PCB    2 Patches  10          50      
2
16 0.04822307  0.01662903 0.0004875154   PCB    4 Patches   1           5      
4
17 0.09644467  0.01777045 0.0004877006   PCB    4 Patches   2          10      
4
18 0.14466705  0.01821094 0.0004877409   PCB    4 Patches   3          15      
4
19 0.19265015  0.01109928 0.0005715912   PCB    4 Patches   4          20      
4
20 0.24081446  0.01112177 0.0005715677   PCB    4 Patches   5          25      
4
21 0.28897841  0.01117924 0.0005715650   PCB    4 Patches   6          30      
4
22 0.33559511 -0.01359166 0.0007090505   PCB    4 Patches   7          35      
4
23 0.38114791 -0.04000038 0.0009754073   PCB    4 Patches   8          40      
4
24 0.42879180 -0.04000463 0.0009754005   PCB    4 Patches   9          45      
4
25 0.47643549 -0.04000530 0.0009753990   PCB    4 Patches  10          50      
4
31 0.04780828  0.22108929 0.0004442073   PCB    5 Patches   1           5      
5
32 0.09551991  0.22315344 0.0003972545   PCB    5 Patches   2          10      
5
33 0.14323731  0.22140675 0.0003926791   PCB    5 Patches   3          15      
5
34 0.19111263  0.21089745 0.0005427425   PCB    5 Patches   4          20      
5
35 0.23918126  0.22255320 0.0004810829   PCB    5 Patches   5          25      
5
36 0.28702280  0.22276860 0.0004810596   PCB    5 Patches   6          30      
5
37 0.33432429  0.20244000 0.0005802950   PCB    5 Patches   7          35      
5
38 0.38066666  0.17712990 0.0006780412   PCB    5 Patches   8          40      
5
39 0.42687761  0.15966148 0.0007653099   PCB    5 Patches   9          45      
5
40 0.47430651  0.15952135 0.0007652945   PCB    5 Patches  10          50      
5
46 0.04692786  0.68334412 0.0005052207   PCB    9 Patches   1           5      
9
47 0.09382041  0.69342727 0.0004937250   PCB    9 Patches   2          10      
9
48 0.14073030  0.69065706 0.0005042077   PCB    9 Patches   3          15      
9
49 0.18771848  0.68153656 0.0005905591   PCB    9 Patches   4          20      
9
50 0.23465733  0.68206868 0.0005905449   PCB    9 Patches   5          25      
9
51 0.28160051  0.68258821 0.0005905167   PCB    9 Patches   6          30      
9
52 0.32733840  0.64959219 0.0006951437   PCB    9 Patches   7          35      
9
53 0.37086396  0.60372670 0.0008839044   PCB    9 Patches   8          40      
9
54 0.41724004  0.60415490 0.0008837397   PCB    9 Patches   9          45      
9
55 0.46361589  0.60449739 0.0008836109   PCB    9 Patches  10          50      
9 PCB_hab_dist_paramaters_sub.txt
<http://r.789695.n4.nabble.com/file/n4646514/PCB_hab_dist_paramaters_sub.txt>  



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