I want to do a series of contour plots, 4 in all. The data is coming
from a data frame named "nd.frame", which has elements "xdf", "ydf",
"zdf", and "pndt". I am treating "pndt" as a factor, and it has four
levels. I make a call to the lattice graphics routine "contourplot"
like so:
contourplot(zdf~xdf*ydf|factor(pndf),data=nd.frame)
>From this I get a 2x2 grid of four contour plots. So far so good.
The problem - a big problem in my situation - is that the arrangement is
in the order
3 | 4
------
1 | 2
What I need is
1 | 2
------
3 | 4
Or
1 | 3
------
2 | 4
How do I convince R to reorder my plots?
The common wisdom seems to be that I should reorder the data in the data
frame via the reorder() function. My efforts at this have been
fruitless, as I can't seem to understand what the output of reorder()
actually is or how to use it. And none of the documentation I have read
on reorder()makes any sense to me at all. Can anyone help?
Also, not to get snippy, but it seems to me that a very obvious and
useful flag for the contourplot() function would be some sort of order
flag, which could take arguments like "reverse" or "byrow" or
"bycolumn". As far as I can tell, nothing of the sort exists. Am I
right about this? If so, why is this the case? A flag in a function
would be a much more convenient way of changing plotting order than
actually messing around with your data.
Thanks.
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