[R-SIG-Mac] Dashed line not evenly separated

Ken Beath ken @end|ng |rom kjbe@th@com@@u
Thu Feb 24 00:26:30 CET 2022


This works properly if the plot window is made wider.

Ken

> On 24 Feb 2022, at 10:13 am, Zhang, Jialin via R-SIG-Mac <r-sig-mac using r-project.org> wrote:
> 
> Yes, thank you John for the observation. Your code shows the same behavior on my Intel Mac as well.
> 
> Could anyone help make it look normal? Thanks!
> 
>> 
> Jialin Zhang (JZ), Assistant Professor of Statistics
> Department of Mathematics and Statistics
> Mississippi State University
> tel: (662) 325-7137; email: jzhang using math.msstate.edu <mailto:jzhang using math.msstate.edu><mailto:jzhang using math.msstate.edu <mailto:jzhang using math.msstate.edu>>
> 
> 
> From: John Fox <jfox using mcmaster.ca <mailto:jfox using mcmaster.ca>>
> Date: Wednesday, February 23, 2022 at 5:11 PM
> To: Daniel Kelley <Dan.Kelley using Dal.Ca <mailto:Dan.Kelley using Dal.Ca>>, Zhang, Jialin <jzhang using math.msstate.edu <mailto:jzhang using math.msstate.edu>>
> Cc: r-sig-mac using r-project.org <mailto:r-sig-mac using r-project.org> <r-sig-mac using r-project.org <mailto:r-sig-mac using r-project.org>>
> Subject: Re: [R-SIG-Mac] Dashed line not evenly separated
> Dear Jialin Zhang and Dan,
> 
> You can simplify the example to
> 
> plot(log10(1:1e4), lty = 2, type="l")
> 
> and observe the same behaviour -- in my case on an M1 Mac.
> 
> Best,
> John
> 
> 
> On 2022-02-23 5:56 p.m., Daniel Kelley wrote:
>> I get the same, on an intel mac with the same R and macOS monterey 12.3-beta.
>> 
>> I also get that if I just plot() the thing you're using lines() for. I am guessing that it's a problem with the fact that the data get very close together towards the right-hand part of the plot. That should not be a problem, of course; this seems like a bug.
>> 
>> Dan Kelley / Dept. Oceanography / Dalhousie University / Canada
>> 
>> On Feb 23, 2022, at 6:41 PM, Zhang, Jialin via R-SIG-Mac <r-sig-mac using r-project.org<mailto:r-sig-mac using r-project.org>> wrote:
>> 
>> CAUTION: The Sender of this email is not from within Dalhousie.
>> Hello Mac experts,
>> 
>> I wrote the following code on my Mac but the resulting plot has a weird dashed line. Here are the codes:
>> 
>> zeta.ppt <- function(v){
>> ppt=function(i){
>> result <- numeric(length(i))
>> for (j in i){
>> if (j < 11) {result[j] <- (11-j)/110}
>> else {result[j] <- 3/pi^2/(j-10)^2}
>> }
>> result
>> }
>> p <- ppt(1:10000)
>> printout <- numeric(length(v))
>> for (k in 1:length(v)) {
>> printout[k] <- sum(p*(1-p)^v[k])
>> }
>> printout
>> }
>> zeta.sept <- function(v){
>> sept=function(i){
>> result <- numeric(length(i))
>> for (j in i){
>> if (j < 11) {result[j] <- (11-j)/110}
>> else {result[j] <- 0.5/1.670407*exp(-sqrt(j-10))}
>> }
>> result
>> }
>> p <- sept(1:10000)
>> printout <- numeric(length(v))
>> for (k in 1:length(v)) {
>> printout[k] <- sum(p*(1-p)^v[k])
>> }
>> printout
>> }
>> tau.ppt <- function(v){
>> v*zeta.ppt(v)
>> }
>> tau.sept <- function(v){
>> v*zeta.sept(v)
>> }
>> plot(log(tau.ppt(1:20000))~log(1:20000), xlim = c(0,10), ylim=c(0, 5), axes = F, ylab = "", xlab = "", type = "l")
>> lines(log(tau.sept(1:20000))~log(1:20000), lty = 2, type = "l")
>> box()
>> 
>> 
>> Here is the plot I got:
>> <image001.png>
>> 
>> As we could observe, the end portion of the dashed line is almost a solid line. I posted the question onhttps://stackoverflow.com/questions/71241028/plot-line-types-in-r as well and seems they can run my codes with perfect dashed line on Windows OS.
>> 
>> I have tried it on both intel Mac and M1 Mac, both gave me weird dashed lines. I have tried it in both R and RStudio. Here is my sessionsInfo:
>> 
>> 
>>> sessionInfo()
>> 
>> R version 4.1.2 (2021-11-01)
>> 
>> Platform: x86_64-apple-darwin17.0 (64-bit)
>> 
>> Running under: macOS Monterey 12.2.1
>> 
>> 
>> 
>> Matrix products: default
>> 
>> LAPACK: /Library/Frameworks/R.framework/Versions/4.1/Resources/lib/libRlapack.dylib
>> 
>> 
>> 
>> locale:
>> 
>> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>> 
>> 
>> 
>> attached base packages:
>> 
>> [1] stats graphics grDevices utils datasets methods base
>> 
>> 
>> 
>> loaded via a namespace (and not attached):
>> 
>> [1] compiler_4.1.2 tools_4.1.2
>> 
>> 
>> 
>> 
>> Please advise. Thank you!
>> 
>>>> 
>> Jialin Zhang (JZ), Assistant Professor of Statistics
>> Department of Mathematics and Statistics
>> Mississippi State University
>> tel: (662) 325-7137; email: jzhang using math.msstate.edu<mailto:jzhang using math.msstate.edu>
>> 
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> --
> John Fox, Professor Emeritus
> McMaster University
> Hamilton, Ontario, Canada
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