[R] verInd= and HorInd= arguments to pairs() function

[Andrews, Chris]

After making scatterplot matrix, I determined I only needed the first 2 columns of the matrix so I added verInd=1:2 to my pairs() call.  However, it did not turn out as I expected. 

Perhaps the attached pdf of the example code will make it through.  If not, my description is "the wrong scatterplot pairs are in the wrong places" for the last two pairs() calls.

Thanks,
Chris

################################################################

# fake data
xmat <- matrix(1:28, ncol=4)
lim <- range(xmat)

# what I expected
pairs(xmat, xlim=lim, ylim=lim) # 4x4 matrix of scatterplots
pairs(xmat, xlim=lim, ylim=lim, verInd=1:2, horInd=1:2) # 2x2 matrix of scatterplots: upper left

# here comes trouble
pairs(xmat, xlim=lim, ylim=lim, horInd=1:2) # 2x4 matrix of scatterplots: but not the top 2 rows (or bottom 2 rows)
pairs(xmat, xlim=lim, ylim=lim, verInd=1:2) # 4x2 matrix of scatterplots: but not the left 2 columns (or right 2 columns)


###############################################################

> sessionInfo()
R version 3.5.0 (2018-04-23)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252    LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                           LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] compiler_3.5.0 tools_3.5.0   
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