Hi there,

i recently started to learn R to deal  with a huge data matrix to deal 
with with ecological data (about 40 observations in 360 samples, divided 
in 7 groups of similar samples). I want to do a simple pairs or ggpairs:

pairs(mydata, pch=20, col=brewer.pal(7, "Dark2")[unclass(all$group)])

ggpairs(mydata, colour="group") (preferred)



Of course, the plot margins are way to small to produce a 40x40 plot 
matrix (or is there a way to create poster-sized plots?), so i need to 
produce 39 x,y scatter-plots for each single column and arrange them 
somehow. Is there a way to do it automatically (without creating 39 
single plots one by one?)
Another option would be to only show plots with x,y pairs with 
correlation values above a certain treshold (i would need to create the 
cor-matrix first and identify those highly correlated pairs by myself, 
correct, or is there a way to tell R to do that?)
And finally, ggpairs is giving me fits because the font size of the 
upper part does not change despite me trying to tell R to do so 
(params=list(corSize=10) or just params=list(Size=10) or 
upper=list(params=c(Size=10)).


As i said i am a beginner and hopefully my questions are not too stupid.

-- 
Tim Richter-Heitmann (M.Sc.)
PhD Candidate



International Max-Planck Research School for Marine Microbiology
University of Bremen
Microbial Ecophysiology Group (AG Friedrich)
FB02 - Biologie/Chemie
Leobener Straße (NW2 A2130)
D-28359 Bremen
Tel.: 0049(0)421 218-63062
Fax: 0049(0)421 218-63069


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