I just ran into this strange behavior.
y <- rnorm(1000)
x <- seq(0, length=length(y))
plot(x, y, type='l', lty=1) - instantaneous
plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting
axes
= 33s
plot(x, y, type='l', lty=3) - 76s ,, + 75s
,, = 151s
plot(x, y, type='l', lty=4) - 40s ,, + 38s
,, = 78s
A couple of observations:
(1) The plots for lty>1 seem to be rendered in "one chunk", that is
a blank
graphics window appears and stays blank until all the lines appear at once.
Then another long wait for axes.
(2) While waiting for the plot, the computer becomes totally unresponsive.
Typical ctr-alt-del does nothing. Even pushing the power button does
nothing. I originally attempted the lty=2 plot with several hundred
thousand observations. The only way I could get my machine back was to
disconnect the power cord!
My system is as follows:
(1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive,
64Mb FireGL graphics card
(2) Windows 2000 Pro
(3) R-1.3.0 (original version)
Andy
__________________________________
Andy Jaworski
Engineering Systems Technology Center
3M Center, 518-1-01
St. Paul, MN 55144-1000
-----
E-mail: apjaworski at mmm.com
Tel: (651) 733-6092
Fax: (651) 736-3122
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On Tue, 24 Jul 2001 14:37:48 -0500, you wrote:>I just ran into this strange behavior. > > y <- rnorm(1000) > x <- seq(0, length=length(y)) > > plot(x, y, type='l', lty=1) - instantaneous > plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting axes >= 33s... and even longer times for other line types. I tried this code on my tiny little Libretto (Pentium 120Mhz, 32Mb ram, 20gb drive) running Win95, and it was noticeably slower doing the line types other than type 1, but not nearly as slow as described. I'd suggest you're short of some sort of graphics resource, or there's a Win2K bug here.>My system is as follows: >(1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive, >64Mb FireGL graphics card >(2) Windows 2000 Pro >(3) R-1.3.0 (original version)Duncan Murdoch -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Well, on Unix (and probably most other platforms), it's several orders of magnitudes faster, *but* qualitatively similar : Here are my findings (for a fast Linux on a not really fast graphics card): ## MM: User, System and Total Ti <- function(expr) system.time(expr)[1:3] ## I just ran into this strange behavior. N <- 1000 ## originally N <- 100000# to see some slowness on Unix y <- rnorm(N) x <- 0:(N-1) ## Times : For N=1000, Andy Jaworski, see below Ti(plot(x, y, type='l', lty=1))## instantaneous Ti(plot(x, y, type='l', lty=2))## 18s plotting lines + 15s plotting axes = 33s Ti(plot(x, y, type='l', lty=3))## 76s ,, + 75s ,, = 151s Ti(plot(x, y, type='l', lty=4))## 40s ,, + 38s ,, = 78s ## MM : For N <- 100000, I get (on "lynne", a pretty new PIII) ## User Sys Total ## ---- ---- ---- ## 0.32 0.01 0.73 ## 0.34 0.01 3.15 ## 0.22 0.00 4.97 ## 0.32 0.01 4.07>>>>> "AndyJ" == apjaworski <apjaworski at mmm.com> writes:AndyJ> I just ran into this strange behavior. AndyJ> y <- rnorm(1000) AndyJ> x <- seq(0, length=length(y)) AndyJ> plot(x, y, type='l', lty=1) - instantaneous AndyJ> plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting axes AndyJ> = 33s AndyJ> plot(x, y, type='l', lty=3) - 76s ,, + 75s AndyJ> ,, = 151s AndyJ> plot(x, y, type='l', lty=4) - 40s ,, + 38s AndyJ> ,, = 78s AndyJ> A couple of observations: AndyJ> (1) The plots for lty>1 seem to be rendered in "one chunk", that is a blank AndyJ> graphics window appears and stays blank until all the lines appear at once. AndyJ> Then another long wait for axes. AndyJ> (2) While waiting for the plot, the computer becomes totally unresponsive. AndyJ> Typical ctr-alt-del does nothing. Even pushing the power button does AndyJ> nothing. I originally attempted the lty=2 plot with several hundred AndyJ> thousand observations. The only way I could get my machine back was to AndyJ> disconnect the power cord! AndyJ> My system is as follows: AndyJ> (1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive, AndyJ> 64Mb FireGL graphics card AndyJ> (2) Windows 2000 Pro AndyJ> (3) R-1.3.0 (original version) AndyJ> Andy AndyJ> __________________________________ AndyJ> Andy Jaworski AndyJ> Engineering Systems Technology Center AndyJ> 3M Center, 518-1-01 AndyJ> St. Paul, MN 55144-1000 AndyJ> ----- AndyJ> E-mail: apjaworski at mmm.com AndyJ> Tel: (651) 733-6092 AndyJ> Fax: (651) 736-3122 AndyJ> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- AndyJ> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html AndyJ> Send "info", "help", or "[un]subscribe" AndyJ> (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch AndyJ> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._>>>>> "apjaworski" == apjaworski <apjaworski at mmm.com> writes:apjaworski> I just ran into this strange behavior. apjaworski> y <- rnorm(1000) apjaworski> x <- seq(0, length=length(y)) apjaworski> plot(x, y, type='l', lty=1) - instantaneous apjaworski> plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting axes apjaworski> = 33s apjaworski> plot(x, y, type='l', lty=3) - 76s ,, + 75s apjaworski> ,, = 151s apjaworski> plot(x, y, type='l', lty=4) - 40s ,, + 38s apjaworski> ,, = 78s apjaworski> A couple of observations: apjaworski> (1) The plots for lty>1 seem to be rendered in "one chunk", that is a blank apjaworski> graphics window appears and stays blank until all the lines appear at once. apjaworski> Then another long wait for axes. apjaworski> (2) While waiting for the plot, the computer becomes totally unresponsive. apjaworski> Typical ctr-alt-del does nothing. Even pushing the power button does apjaworski> nothing. I originally attempted the lty=2 plot with several hundred apjaworski> thousand observations. The only way I could get my machine back was to apjaworski> disconnect the power cord! apjaworski> My system is as follows: apjaworski> (1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive, apjaworski> 64Mb FireGL graphics card apjaworski> (2) Windows 2000 Pro apjaworski> (3) R-1.3.0 (original version) apjaworski> Andy apjaworski> __________________________________ apjaworski> Andy Jaworski apjaworski> Engineering Systems Technology Center apjaworski> 3M Center, 518-1-01 apjaworski> St. Paul, MN 55144-1000 apjaworski> ----- apjaworski> E-mail: apjaworski at mmm.com apjaworski> Tel: (651) 733-6092 apjaworski> Fax: (651) 736-3122 apjaworski> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- apjaworski> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html apjaworski> Send "info", "help", or "[un]subscribe" apjaworski> (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch apjaworski> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
I observed similar behavior with a Pentium III running NT4 SP6. For giggles, I tried the script in Splus; with lty = 2, the plotting was as fast as with lty = 1. But for lty = 3 and lty =4, the results were similar. Also, when the plot is being rendered, the system is completely tied up. Anne ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Anne E. York National Marine Mammal Laboratory Seattle WA 98115-0070 USA e-mail: anne.york at noaa.gov Voice: +1 206-526-4039 Fax: +1 206-526-6615 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On Tue, 24 Jul 2001 apjaworski at mmm.com wrote:>I just ran into this strange behavior. > > y <- rnorm(1000) > x <- seq(0, length=length(y)) > > plot(x, y, type='l', lty=1) - instantaneous > plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting axes >= 33s > plot(x, y, type='l', lty=3) - 76s ,, + 75s >,, = 151s > plot(x, y, type='l', lty=4) - 40s ,, + 38s >,, = 78s > >A couple of observations: >(1) The plots for lty>1 seem to be rendered in "one chunk", that is a blank >graphics window appears and stays blank until all the lines appear at once. >Then another long wait for axes. >(2) While waiting for the plot, the computer becomes totally unresponsive. >Typical ctr-alt-del does nothing. Even pushing the power button does >nothing. I originally attempted the lty=2 plot with several hundred >thousand observations. The only way I could get my machine back was to >disconnect the power cord! > >My system is as follows: >(1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive, >64Mb FireGL graphics card >(2) Windows 2000 Pro >(3) R-1.3.0 (original version) > >Andy > >__________________________________ >Andy Jaworski >Engineering Systems Technology Center >3M Center, 518-1-01 >St. Paul, MN 55144-1000 >----- >E-mail: apjaworski at mmm.com >Tel: (651) 733-6092 >Fax: (651) 736-3122 > >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- >r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html >Send "info", "help", or "[un]subscribe" >(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch >_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._