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

John Fox j|ox @end|ng |rom mcm@@ter@c@
Thu Feb 24 02:30:48 CET 2022 

Dear Ken,

Yes, but I believe that it *should* work even in a small window. For 
example, the following produces a proper broken line on Windows but not 
on macOS:

   pdf(width=3, height=3)
   plot(log10(1:1e4), lty = 2, type="l")
   dev.off()

Best,
  John

On 2022-02-23 6:26 p.m., Ken Beath wrote:
> 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 <mailto: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><mailto: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 
>>> <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><mailto:jzhang using math.msstate.edu 
>>> <mailto:jzhang using math.msstate.edu>>
>>>
>>> _______________________________________________
>>> R-SIG-Mac mailing list
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>>> <https://secure-web.cisco.com/1C2jZBXabdphnm22sEK2OH8JJ_s4hBQhcAWdRxGw_6pBjqkW63sTcdXzzrNPVryJjrLh2aIwutJMj3H4fcbTQoeqz4HNLz2Qv6gFkTL3_145VGPdVtSC6Ayr7vSAZ_PTQKdV34CCG0swdUGqoD1vpGDIQ5rqHJt9ongNelIUAT63D48eU6sD912m2349D8vbQEWpV2e8UGYaL000vIa34gNvox1BWQ2DYjAgwx4C-XFyPjaE1BwBd3j5G4m9qlieUcECaeGmVTX_nvmZK6C0_4ys2O5_HjixyspzRbHnGUaJAYFyjOwLuRDfn6nZ7ETqe/https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-sig-mac>
>> --
>> John Fox, Professor Emeritus
>> McMaster University
>> Hamilton, Ontario, Canada
>> web:https://secure-web.cisco.com/1zQuu3HCVSyc9bSv2w_UTFR_PcyZAR-iGHGepZbDWSbt0cNPFPyfAImkbWmIl95tbdbysOhl27C3XpIxRHn9uP0MiNVmYgle68e1DL2XI8E5WRD1vZ30a9S1WOR_CAix859xYqxDOxr3eo6Cmb6BxhbWhNbp6JTMzd-_5V6XHGxU4xM_ZYXrZhcQry_7MPqiPLFCZkP4lcOiWsMVvixGttjFBzI1UDxrKEMe_GfpUyRweqcKbje7_Uf_lspNFdXjIW3SEvvJ33rwHRtLpdUQAB3Lu8FbrocAEcLXh9tz0EIkuxHsY5hBBTl34NalNs74v/https%3A%2F%2Fsocialsciences.mcmaster.ca%2Fjfox%2F 
>> <https://secure-web.cisco.com/1zQuu3HCVSyc9bSv2w_UTFR_PcyZAR-iGHGepZbDWSbt0cNPFPyfAImkbWmIl95tbdbysOhl27C3XpIxRHn9uP0MiNVmYgle68e1DL2XI8E5WRD1vZ30a9S1WOR_CAix859xYqxDOxr3eo6Cmb6BxhbWhNbp6JTMzd-_5V6XHGxU4xM_ZYXrZhcQry_7MPqiPLFCZkP4lcOiWsMVvixGttjFBzI1UDxrKEMe_GfpUyRweqcKbje7_Uf_lspNFdXjIW3SEvvJ33rwHRtLpdUQAB3Lu8FbrocAEcLXh9tz0EIkuxHsY5hBBTl34NalNs74v/https%3A%2F%2Fsocialsciences.mcmaster.ca%2Fjfox%2F>
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> 
-- 
John Fox, Professor Emeritus
McMaster University
Hamilton, Ontario, Canada
web: https://socialsciences.mcmaster.ca/jfox/

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