Origin of coordinate system

Hello,

Thank you for your answer. That's the workaround I use - but that's
not what I intended: the resulting graph looks correct. I used this
approach a hundred times. But the ugly thing remains: the x-values
(independent variables) are treated as y-values, and the y-values
(dependent variables, f(x)) as if they were x-values.But what if I
have several f(x) values for one x-value, and want to create an error
bar or similar? Therefore my question: How can I plot x-values from
top to bottom an y-values from left to right _without_ "masquerading"
them as y resp. x?

I think I know what you mean. I suppose that you have already set up a suite of wrapper functions around base graphics for your convenience?  That's the direction I would go, but it sounds you may have done so already.  Like the following?

myDepthPlot <- function(depth, value, value2, ylim = rev(range(depth)), ...) 
  plot(value, depth, ylim = ylim, ...)
  if (!missing(value2)) myDepthPoints(depth, value2, ...)
}

myDepthPoints <- function(depth, value, ...) { points(value, depth, ...) }

Also, you may want to look into Dan Kelley's most excellent OCE package: http://dankelley.github.com/oce/

Neither of the above reconfigures the coordinate system, but they allow the user to access functionality as if it were.

Cheers,
Ben

Richard

2012/8/23 S Ellison <S.Ellison at lgcgroup.com>:

See ?par etc

Setting ylim  sets the bottom and top of the plot respectively, so
plot(1:10, ylim=c(11,0), xlim=c(0,11), ylab='depth')

-- 
Richard M?ller . Am Spring 9 . D-58802 Balve
www.oeko-sorpe.de

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