r - How can I have the full range in the x- and y-axis labels in a plot? -


i have 2 variables, x , y

x = runif(8, 0, runif(1, 1, 5)) y = x^2

that want plot. note range of x (and hence y=x^2) not same.

so, command 

plot(x, y, pch=19, col='red')

produces

enter image description here

however, don't want borders around graph, use bty='n' parameter plot:

plot(x, y, pch=19, col='red', bty='n')

which produces

enter image description here

this bit unfortunate, imho, since i'd y-axis go way 4 , x-axis way 2.

so, ue xaxp , yaxp parameters in plot command: 

plot(x, y, pch=19, col='red', bty='n',       xaxp=c(        floor  (min(x)),        ceiling(max(x)),        5     ),     yaxp=c(        floor  (min(y)),        ceiling(max(y)),        5     ) )

which produces enter image description here

this bit better, still doesn't show full range. also, thought nice default axis labaling uses steps 1,2,3,4 or 0.5,1,1.5,2, not arbitrary fractions.

i guess r has parameter or mechanism plot full range in axis in "humanly" fashion (0.5,1,1.5 ...) didn't find it. so, try?

try:

plot(x, y, pch=19, col='red', bty='n', xlim=c(min(x),max(x)),   ylim=c(min(y),max(y)), axes=false) axis(1, at=seq(floor(min(x)), ceiling(max(x)), 0.5)) axis(2, at=seq(floor(min(y)), ceiling(max(y)), 0.5))

or if you'd prefer hard-code axis ranges:

axis(1, at=seq(0, 2, 0.5)) axis(2, at=seq(0, 4, 0.5))

is after?


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