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#### Regression tests for GRAPHICS & PLOTS
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#### Regression tests for GRAPHICS & PLOTS -- requiring strict PDF equality
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pdf("reg-plot.pdf", paper="a4r", encoding ="ISOLatin1.enc", compress = FALSE,
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pdf("reg-plot.pdf", paper="a4r", encoding ="ISOLatin1.enc", compress = FALSE,
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    useDingbats = TRUE)
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    useDingbats = TRUE)
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## since we supply the font metrics, the results depend only on
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## since we supply the font metrics, the results depend only on
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dotchart(VADeaths[1:2, 1:3], color=g, pch=g,
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dotchart(VADeaths[1:2, 1:3], color=g, pch=g,
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         ylab = "Grouping:  {Urbanity . Gender} x Age",
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         ylab = "Grouping:  {Urbanity . Gender} x Age",
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         xaxt="n", frame.plot=FALSE)
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         xaxt="n", frame.plot=FALSE)
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## now pch and colors match groups;
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## now pch and colors match groups;
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## ylab placement; group (row) labels show again
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## ylab placement; group (row) labels show again
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## non-integer mgp[3] -- PR#18194
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par(mar = c(5, 5, 5, 5))
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plot.new()
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plot.window(xlim = c(0, 5), ylim = 0:1)
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if(dev.interactive()) {
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    box(lty = 3)
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    ## 'axis' puts line and labels in right place when 'mgp[3]' is integer
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    mgp_bottom <- c(4, 2.5, 1) # 'mgp[1]' is arbitrary
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    axis(1, at=c(1,4), mgp = mgp_bottom)
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    mtext(c("labels", "line"), side = 1, line = mgp_bottom[2:3])
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}
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## Now, 'axis' puts line & labels in right place also when 'mgp[3]' is noninteger:
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mgp_top <- c(4, 2.5, 0.9)
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axis(3, at=c(1,4), mgp = mgp_top)
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mtext(c("labels are here", "line"), line = mgp_top[2:3])
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## They were one line too high in R <= 4.1.1