similar to: how to read a group of files into one dataset?

hi R user mtdno<-paste("data",1:3,sep="") tyno<-paste("obs",1:5,sep="") flnm<-paste(mtdno,tyno,"_err.dat",sep="") flnm is [1] "data1obs1_err.dat" "data2obs2_err.dat" "data3obs3_err.dat" [4] "data1obs4_err.dat" "data2obs5_err.dat" but actually what i want is data from 1 to 3

hi ,when i read a lots of files for (i in 1:totnum) { cop_x_data<-read.table(flnm[i],skip=2) if(i==1) {cop_data=cop_x_data} else {cop_data=rbind(cop_data,cop_x_data)} } some of the files are missing . so this loop can not go on .I wonder how can I go on the loop cycle while reading the files just like the command read(unit,err=linenum) in fortran ? thank you . -- TANG Jie [[alternative

hi ,R users I read a series of file by the command shown as below. cop_x_data<-read.table(flnm,skip=2) the first two line of the files are headfile and I skip them. and sometimes the original data file is null and there is no any data in the file except for the head information. At this situation,my command would be in the error and tell me that there is not data in the file and can not go

hi , I am reading a series of files by the command shown as below. cop_x_data<-read.table(flnm(i) ,skip=2,allowEscapes=TRUE,blank.lines.skip=TRUE) the first two line of the files are headfile and I skip them by skip=2. and sometimes the data file is null and there is no any data in the file except for the head information. At this situation,my command would be in the error and tell me that

I have a repetative task in R and i'm trying to find a more efficient way to perform the following task. lst <- list(roots = c("car insurance", "auto insurance"), roots2 = c("insurance"), prefix = c("cheap", "budget"), prefix2 = c("low cost"), suffix = c("quote", "quotes"),

I have 100+ .csv files which have the basic format: > test X Substance1 Substance2 Substance3 Substance4 Substance5 1 Time1 10 0 0 0 0 2 Time2 9 5 0 0 0 3 Time3 8 10 1 0 0 4 Time4 7 20 2 1 0 5 Time5

In the below, I generate a model from an environment that isn't .GlobalEnv with a large object that is unrelated to the model generation. It seems to save the irrelevant object unnecessarily. In my actual use case, I am running and saving many models in a loop that each use a single large data.frame (that gets collapsed into a small data.frame for estimation), so removing it isn't an

Dear R helpers I have following dataset rate_number = matrix(c(5, 15, 60, 15, 5, 0, 20, 60, 20,0, 10, 20, 40, 20, 10), nrow = 5, ncol = 3) range_mat = matrix(c(6.25, 6.75, 7.25, 8.75, 9.25, 9.75, 8.5, 9, 9.5, 10.5, 11, 11.5, 4.25, 4.75, 5.25, 5.75, 6.25, 6.75), nrow = 6, ncol = 3) > rate_number        [,1]   [,2]   [,3] [1,]    5     0      10 [2,]   15   20      20 [3,]   60   60      40

I'm finding that readLines() and read.fwf() take nearly two hours to work through a 3.5 GB file, even when reading in large (100 MB) chunks. The unix command wc by contrast processes the same file in three minutes. Is there a faster way to read files in R? Thanks!

Dear list, In a little numbers game, I've hit a performance snag and I'm not sure how to code this in C. The game is the following: how many 8-digit numbers have the sum of their digits equal to 17? The brute-force answer could be: maxi <- 9 # digits from 0 to 9 N <- 5 # 8 is too large test <- 17 # for example's sake sum(rowSums(do.call(expand.grid, c(list(1:maxi),

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From: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> This patch handle additional cases for IVRS bugs where special->handle is not correctly initialized for IOAPIC and HPETS due to firmware bugs. Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Provide logic in "is_ioapic_overidden()" Signed-off-by: Jan Beulich <JBeulich@suse.com> ---

Hello, I''ve previously been successful with Xen4 and VT-d on other systems. I am having trouble getting VT-d passthrough working to a WinXP domain with DX58SO (Q45) motherboard and i7 930 CPU. VT-d is enabled in bios, xm info shows hvm_directio capability, I have iommu=1 set, I have the devices bound to pciback on dom0 cmdline, xm pci-list-assignable-devices shows the devices as

Hello, I''ve previously been successful with Xen4 and VT-d on other systems. I am having trouble getting VT-d passthrough working to a WinXP domain with DX58SO (Q45) motherboard and i7 930 CPU. VT-d is enabled in bios, xm info shows hvm_directio capability, I have iommu=1 set, I have the devices bound to pciback on dom0 cmdline, xm pci-list-assignable-devices shows the devices as

Like others on this list I am trying to employ the VTD-NEO patches in Xen 3.2 unstable to assign the internal graphics device to Dom1/Vista. I have removed the Cirrus Logic emulated device from qemu and replaced the Cirrus Logic vgabios with the the actual vgabios from my GPU. However I am hitting an xen assert and was hoping someone might be able to point me in the right direction. Below

Hello, I''m having problems with VTD on this board. The board/cpu/bios all support vt-d and I think maybe I''m just missing something? Any feedback would be much appreciated :) Output below: root@vm:~# xm create /etc/xen/vm-nine.cfg Using config file "/etc/xen/vm-nine.cfg". Error: Failed to assign device to IOMMU (0000:05:00.0@100,msitranslate=1,power_mgmt=0)

Hello, I''m having problems with VTD on this board. The board/cpu/bios all support vt-d and I think maybe I''m just missing something? Any feedback would be much appreciated :) Output below: root@vm:~# xm create /etc/xen/vm-nine.cfg Using config file "/etc/xen/vm-nine.cfg". Error: Failed to assign device to IOMMU (0000:05:00.0@100,msitranslate=1,power_mgmt=0)

Under the assumption that in these cases recurring faults aren''t a security issue and it can be expected that the drivers there are going to try to take care of the problem. Signed-off-by: Jan Beulich <jbeulich@suse.com> --- a/xen/drivers/passthrough/amd/iommu_init.c +++ b/xen/drivers/passthrough/amd/iommu_init.c @@ -625,6 +625,18 @@ static void parse_event_log_entry(struct

Add commands to automatically prep devices for pass-through The current method for passing through devices requires users to either modify cryptic Linux boot parameters and reboot, or do a lot of manual reads and writes into sysfs nodes. This set of patches introduces commands to make this easier. It expands on the concept of "assignable" (from the list_assignable_devices command).

Hi Wei, A Debian user has hit this message and reported it in http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684661 I think it is the BUG_ON in: struct amd_iommu *find_iommu_for_device(int bdf) { BUG_ON ( bdf >= ivrs_bdf_entries ); return ivrs_mappings[bdf].iommu; } It looks like ivrs_bdf_entries comes from ACPI. Unfortunately the bug report