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Full_Name: Ulrich Poetter Version: 2.1.1 OS: i686-pc-linux-gnu FC2 Submission from: (NULL) (134.147.95.187) as.data.frame() segfaults on lists with very many elements: > dfn <- rep(list(rep(0,2)),198000) > test <- as.data.frame.list(dfn) Process R segmentation fault at Sun Sep 18 17:06:02 2005

...uld also be appreciated, but this is my main concern right now.) Here's my code: f<-function(r){1-exp(-r*b)-(1/2)*(1-exp(-r*x1)+1-exp(-r*x2))} uniroot(f,c(0,1))$root r is the unknown. I've plugged in a couple numbers from my data for b, x1, and x2 such as: b=5500 x1=0.01 x2=10000 and b=198000 x1=10 x2=500000 and gotten 0 both times. Thanks in advance for your help. -- View this message in context: http://www.nabble.com/Solving-an-equation-in-R-%28and-using-a-loop%29-tp25916187p25916187.html Sent from the R help mailing list archive at Nabble.com.

...Rs, I'm wondering why the for() loop below runs slower as it progresses. On a Win XP box, the iterations at the beginning run much faster than those at the end: 1%, iteration 2000, 10:10:16 2%, iteration 4000, 10:10:17 3%, iteration 6000, 10:10:17 98%, iteration 196000, 10:24:04 99%, iteration 198000, 10:24:24 100%, iteration 200000, 10:24:38 Is there something that can be done about this? Would such a loop run faster in C/C++/Fortran? Thank you, b. #---sample code loop.progress <- function(loop,iterations,steps,toprint=NULL) { marks <- c(1,floor(iterations/steps)*(1:steps)) if (loop...

...he UID to SID mapping manually using the following procedure. get the SID: wbinfo -n domain\\<username> S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398 SID_USER (1) Then set the SID to map to a desired UID rather than the random one chosen [root at filer01-ph ctdb]# wbinfo --set-uid-mapping=198000,S-1-5-21-1117850145-XXXXXXXX-XXXXXXX-220398 Could not create or modify uid to sid mapping [root at filer01-ph ctdb] I have tried deleting the old mapping beforehand and clearing the cache [root at filer01-ph ctdb]# wbinfo -i <domain>\\<username> <username>:*:100000:100002::/home...

...DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), > - .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, > }, > + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, > /* 85 - 1680x720 at 120Hz 64:27 */ > { DRM_MODE("1680x720", DRM_MODE_TYPE_DRIVER, 198000, 1680, 1740, > 1780, 2000, 0, 720, 725, 730, 825, 0, > DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), > - .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, > }, > + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, > /* 86 - 2560x1080 at 24H...

...0, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 85 - 1680x720 at 120Hz 64:27 */ { DRM_MODE("1680x720", DRM_MODE_TYPE_DRIVER, 198000, 1680, 1740, 1780, 2000, 0, 720, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 86 - 2560x1080 at 24Hz 64:27 */ { DRM_MODE("2...

...0, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 85 - 1680x720 at 120Hz 64:27 */ { DRM_MODE("1680x720", DRM_MODE_TYPE_DRIVER, 198000, 1680, 1740, 1780, 2000, 0, 720, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 86 - 2560x1080 at 24Hz 64:27 */ { DRM_MODE("2...

...0, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 100, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 85 - 1680x720 at 120Hz 64:27 */ { DRM_MODE("1680x720", DRM_MODE_TYPE_DRIVER, 198000, 1680, 1740, 1780, 2000, 0, 720, 725, 730, 825, 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC), - .vrefresh = 120, .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, + .picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27, }, /* 86 - 2560x1080 at 24Hz 64:27 */ { DRM_MODE("2...

I want to take the first row of each unique ID value from a data frame. For instance > ddTable <- data.frame(Id=c(1,1,2,2),name=c("Paul","Joe","Bob","Larry")) I want a dataset that is Id Name 1 Paul 2 Bob > unique(ddTable) Will give me all 4 rows, and > unique(ddTable$Id) Will give me c(1,2), but not accompanied by the name column.