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R version 2.5.0 Under development (unstable) (2006-11-27 r40028)
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R version 2.6.0 Under development (unstable) (2007-05-23 r41687)
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Copyright (C) 2006 The R Foundation for Statistical Computing
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Copyright (C) 2007 The R Foundation for Statistical Computing
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ISBN 3-900051-07-0
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ISBN 3-900051-07-0
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R is free software and comes with ABSOLUTELY NO WARRANTY.
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R is free software and comes with ABSOLUTELY NO WARRANTY.
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You are welcome to redistribute it under certain conditions.
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You are welcome to redistribute it under certain conditions.
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Type 'license()' or 'licence()' for distribution details.
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Type 'license()' or 'licence()' for distribution details.
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> 
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> ## killed by 0 prior to 1.4.0 and in 1.4.1:
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> ## killed by 0 prior to 1.4.0 and in 1.4.1:
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> t1 <- ts(0:100)
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> t1 <- ts(0:100)
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> ## only warnings about values <= 0
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> ## only warnings about values <= 0
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> plot(t1, log = "y")
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> plot(t1, log = "y")
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Warning in xy.coords(x, NULL, log = log) :
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Warning in xy.coords(x, NULL, log = log) : 1 y value <= 0 omitted from logarithmic plot
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  1 y value <= 0 omitted from logarithmic plot
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> plot(cbind(t1, 10*t1, t1 - 4), log="y", plot.type = "single")
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> plot(cbind(t1, 10*t1, t1 - 4), log="y", plot.type = "single")
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Warning in xy.coords(x = matrix(rep.int(tx, k), ncol = k), y = x, log = log) : 
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Warning in xy.coords(x = matrix(rep.int(tx, k), ncol = k), y = x, log = log) :
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	 7 y values <= 0 omitted from logarithmic plot
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  7 y values <= 0 omitted from logarithmic plot
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> stopifnot(par("usr")[4] > 3) # log10: ylim[2] = 1000
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> stopifnot(par("usr")[4] > 3) # log10: ylim[2] = 1000
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> 
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> 
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> ## This one needs to be looked at.
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> ## This one needs to be looked at.
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> ## lty = "blank" killed the fill colour too.
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> ## lty = "blank" killed the fill colour too.